Fiji Communicable Disease Surveillance and Outbreak Response Guidelines 2016 1
Fiji Communicable Disease Surveillance and Outbreak Response Guidelines 2016 1
Fiji Communicable Disease Surveillance and Outbreak Response Guidelines 2016 1
December 2016
Republic of Fiji
Table of Contents
TABLE OF CONTENTS 2
FOREWORD 4
CONTRIBUTORS 5
LIST OF APPENDICES 10
LIST OF TABLES 13
LIST OF FIGURES 13
EXECUTIVE SUMMARY 14
The guidelines were revised and edited by WHO consultant Dr Colleen Lau, in close collaboration and
consultation with the following contributors:
Fiji Centre for Communicable Disease Control, Dr Daniel Faktaufon, Dr Jimaima Kailawadoko
Mataika House Dr Sam Fullman, Mr Isireli Rabukawaqa
Ms Renata Ram
Communications and Media Liaison Officers Ms Evelyn Mani, Ms Nina Betts, Ms Jacobi Ford
MO Medical Officer
TB Tuberculosis
Appendices will be available on the Fiji MHMS Online Repository, and updated as necessary.
A.1 Principles of infection control: Standard, Contact, Droplet, and Airborne precautions
C.8 Typhoid – Clinical guidelines for diagnosis, management and prevention (2010)
LIST of FIGURES
Public health surveillance is a critical tool in the prevention and control of disease. It is defined by the
World Health Organisation as “…the continuous, systematic collection, analysis and interpretation of
health-related data needed for the planning, implementation, and evaluation of public health practice”.
Essentially, this highlights that data collected and analyzed through surveillance should inform public
health action. For communicable diseases, surveillance provides data on the epidemiology and burden
of disease, which guides in monitoring and control. Communicable disease surveillance is also closely
linked to outbreak response i.e. timely and accurate surveillance information is instrumental in the early
detection and response to outbreaks. And timely response has the potential to mitigate the impact of an
outbreak on Fiji’s people.
This guideline provides a basis for surveillance and response, and is intended for use by health workers,
and all others involved in the monitoring and control of communicable diseases. The guideline has
been restructured from the last edition (2010). Section 1 provides general information on outbreak
response. Section 2 focuses on disease surveillance, notification and response systems in Fiji. Sections
3 and 4 discuss specific syndromic surveillance conditions and outbreak prone diseases or syndromes,
which have been adapted from the Pacific Public Health Surveillance Network’s Pacific Outbreak
Manual (March 2016). Additions to content, compared to the 2010 edition, include descriptions of each
of Fiji’s communicable disease surveillance systems, the roles and responsibilities of laboratories, new
syndromes that are being monitored, and a larger list of outbreak prone diseases - including emerging
diseases like chikungunya and Zika virus disease. Also included in this edition is information on who
should be responsible for declaring an outbreak, and resource allocation and mobilisation once an
outbreak has been declared. Since the last edition of the guideline was published, many new national
guidelines, action plans, procedural documents, forms, and templates have been developed. These have
been listed under appendices, and will be made available on the Ministry of Health and Medical
Services website.
This guideline now supersedes the previous edition, published in 2010. We thank all who have
contributed to the formulation of these new guidelines. The main contributors are listed on Page 5, and
a list of workshop participants is included in the appendix.
An outbreak is an unexpected increase in the number of cases of a disease, when the number of actual
cases is more than the number of expected cases in a specific population over a specific period of time.
The number of cases needed before an outbreak is declared depends on many factors, including:
§ The disease
§ The country or region
§ The number of expected cases (baseline), taking into account the season, population size, and
any changes in the surveillance or notification system
The thresholds for declaring an outbreak vary between diseases and syndromes. Thresholds for each
disease should reflect the urgency of public health response, and should be reviewed if there are
significant changes in disease incidence. Examples of thresholds include:
For diseases that are uncommon but serious (e.g. meningococcal infection), single cases are
considered an “outbreak” and require immediate response. For diseases that are endemic in Fiji (e.g.
dengue, leptospirosis and typhoid), the following guidelines should be used:
§ An OUTBREAK will be declared if incidence rate is >2 standard deviations above the average
for the last 5 non-outbreak years
§ ALERTS will be issued if incidence rate is above average, and again if > 1 standard deviation
above the average for the last 5 non-outbreak years
§ Outbreaks and alerts should be based on incidence rather than case numbers, but surveillance
reports should include both incidence and case numbers.
§ Incidence for each epidemiological week and month should be reported for the whole country
and for each Division and Subdivision. Divisional or Subdivisional-level thresholds could
provide better and/or earlier indications of outbreaks compared to national-level thresholds. For
example, a high incidence in one Division could be “hidden” when data from all Divisions are
combined for analyses.
§ For weekly incidence, the moving average for previous 4 weeks should be used
§ Before declaring an outbreak, it is important to verify the surveillance data to ensure that the
increase in cases is not due to some artefact, including data quality, reporting methods, or
changes in case definitions, use of laboratory tests, or policies.
1. Single cases
3. Any serious event resulting in an unusually high number of cases with similar or severe symptoms,
especially deaths.
The current thresholds used to define outbreaks of endemic diseases and syndromic surveillance
conditions in Fiji are described in Sections 2 and 3 under each disease and syndrome.
Outbreak investigation and response should be conducted in a systematic manner to ensure that the
work is done thoroughly and efficiently, and provide accurate and timely information for public health
action. During the heat of an investigation, following a systematic approach will also ensure that
critical steps are not overlooked.
The following steps are provided as a guideline – they are not fixed, and are often initiated
simultaneously. In some situations, control measures can and should be implemented immediately,
Many components of outbreak investigation and response are dynamic, including case definitions, line
listings, descriptive epidemiology, and hypotheses, i.e. they might need to change as additional
information become available.
In our context, this is an important step to ensure that outbreak teams are well prepared with the
relevant skills, knowledge and personnel to conduct an investigation well before an outbreak is
identified. Also the team should have the capacity to effectively institute control measures while
awaiting further assistance. This preparation can be at an institutional or administrative level e.g.
medical subdivision level, and the range of activities can vary from setting up an outbreak response
team, describing SOPs for team cohesion, regular staff training, outbreak exercises, attachments,
formal certifications, to preparing an inventory of emergency equipment for such events.
A. Investigation
B. Administration
§ Administrative procedures.
§ Travel and other arrangements
C. Consultation
This may be obvious – many cases occurring within a short time period, or less obvious, where analysis
of surveillance data is showing a higher observed rate of disease with that which is expected. However
sometimes reports of outbreaks can be based on incorrect information or rumours. Also, an increase in
cases of disease may be within normal variation and may not be an outbreak. Make sure that the
reported cases really exist, that they have the same disease, and that the rise in cases is not a result of,
for example, a reporting error or a laboratory mistake.
Once the outbreak has been confirmed that there is a likely increase in cases of a certain disease, the
outbreak response team should be activated. Cases may be detected through disease surveillance,
clinical diagnosis of disease or local laboratory testing. Talking with laboratory staff is important to
ensure that the correct samples are collected and samples are stored and transported appropriately.
Specialized testing may be required in a reference laboratory.
Although this may be assumed, it is important to ensure that proper diagnosis has occurred and that
laboratory or other diagnostic error is not the reason for the increase in diagnosed cases.
A first step should be to develop a case definition. This maybe an existing surveillance case definition
or a modified case definition for the purpose of deciding whether an individual should be classified as
having the disease under investigation or not. This outbreak specific case definition defines a case in
terms of time, place and person. Time information may include the period of time in which cases
occurred. Place information usually includes a geographical location such as a town, or province but
may be as small as an institution, a school class, or community function. Person information may
include age, sex, ethnicity, and clinical characteristics such as symptoms (e.g. cough and fever). It is
important that the team uses the same case definition; otherwise there will be much confusion about the
number of cases.
With using the case definition, the next step is to identify cases and collect information. Demographic
information such as age, sex, address and telephone numbers are useful. Interviewing cases about what
may have caused their illness is important. Information to collect depends on the outbreak and may
A line list (Table 1) is then completed to summarise all the collected information about the cases or
those might be cases in the outbreak. A line list allows rapid analysis of the data using an excel
worksheet and usually include demographic, clinical information and other details of persons
interviewed. A line list will usually include case name, address and contact details, date of onset of
illness, date of exposure, symptoms, specimens taken and results of laboratory tests.
After completing a line list, an epidemic curve, or “epicurve”, should be created to describe the
outbreak. The epidemic curve should be assessed for;
§ The overall shape of the curve to assist in determining how the outbreak spread throughout the
population
§ Number of confirmed, clinical, and suspected cases
§ Number of deaths associated with the disease or illness
§ Demographic information e.g., age, gender, and job classification
For every outbreak it is always necessary to describe the cases by Time, Place, and Person.
The TIME refers to the date and time of onset of illness, but if that is not available, date of diagnosis or
presentation is used. It is best to draw an epidemic curve that shows the number of cases by time of
onset. The x-axis (bottom) shows a measure of time, for example hours, days, or months. The y-axis
PLACE refers to where the patients live or where they were mostly likely to have been infected (e.g.
school, work, recreational area). Sometimes it’s a good idea to put the cases on a map. This is called a
spot map. Figure 2 shows an example of s spot map, showing the location of cases and other
landmarks.
Figure 2. Example of a spot map, showing residential locations of cases and landmarks
PERSON refers to information about the cases, including age, sex, occupation, risk factors, etc which
might provide clues to explain the outbreak.
Implement control and prevention measures AS EARLY AS POSSIBLE. Control measures are often
more general to begin with and become more specific as the cause of the outbreak is identified. This
may include, but not limited to, the following:
§ Vaccinations / Chemoprophylaxis
§ Cancellation of gatherings
§ Product recall
§ Restaurant closures
§ Vector control measures
§ Sanitation measures / water purification
§ Respiratory precautions
§ Workplace health and safety
§ Proper management of livestock
There are methods to evaluate the credibility of the hypothesis that is not described in detail this in
guideline. There are two basic approaches:
The former refers to when the evidence is so strong that the hypothesis does not need to be tested.
Strong clinical, laboratory, environmental, and/or epidemiologic evidence can support the hypotheses
and the course of action to be taken. The second method, analytic epidemiology, is used when the cause
is less clear and includes case-control studies, cohort studies, and cross-sectional studies.
Control and prevention methods are usually aimed toward the source of the disease, but may also
include interrupting transmission or limiting exposure. Control measures, which can be implemented
early if the source of an outbreak is known the source of an outbreak, should be aimed at specific links
in the chain of infection, the agent, the source, or the reservoir. For example, destroying contaminated
foods, sterilizing contaminated water, destroying mosquito breeding sites, or requiring an infectious
food handler to stay away from work until well. Interrupting transmission or exposure by wearing
insect repellent and protective clothing. In some outbreaks, direct control measures can reduce
susceptibility such as immunization. Once the cause of the outbreak has been identified, investigators
should work to implement longer-term control measures to end the current outbreak and prevent future
outbreaks. These control measures are more extensive than earlier control measures and should be
evaluated to determine if they are effective.
Findings of the investigation should be communicated to local health authorities who are responsible
for implementing control measures. In addition, a written report provides a legal record of the findings
and contributes to public health awareness. It generally takes two forms: 1) a verbal briefing and 2) a
written report. A verbal briefing should be presented in a scientifically objective fashion, and the
investigator should be able to defend their conclusions and recommendations. A written report is
critically important and follows the following basic format:
§ Introduction
§ Background
§ Methods
§ Results, e.g. epi-curve, analytical epidemiology
§ Discussion
§ Recommendations
Once an outbreak is over, it is important to ramp down the outbreak response so that activities and
resource allocation be returned to routine levels. The surveillance team should advise everyone when
incidence has dropped below outbreak thresholds, and provide a summary of the outbreak, including
incidence, case numbers, and deaths. It is also important to communicate to the general public that an
outbreak is over.
Surveillance is the continuous, systematic collection, analysis and interpretation of health related data,
and is closely integrated with timely dissemination of information to those responsible for preventing
and controlling disease. Reporting (used interchangeably with the term ‘notification’ here) of
communicable disease supports surveillance at both a local and national level.
Data collection on diseases and conditions under surveillance should be considered as an essential step
to prevent, protect against, control and facilitate public health responses to the spread of diseases.
Wherever possible, surveillance information should be simple, complete, timely and useful so as to
provide an evidence base to support effective public health action and response. Importantly,
maintaining an effective routine surveillance system enables the early detection of outbreaks.
The establishment of baseline information for the diseases under surveillance is important in order to:
There are currently multiple communicable disease surveillance systems in Fiji, including:
Note that some diseases are monitored under NNDSS as well as diseases-specific or syndrome-specific
systems. Each system has different reporting pathways, which are described below.
The NNDSS monitors a comprehensive list of diseases and syndromes (Table 2). The reporting of
notifiable diseases has been in existence since 1938 by enactment of the Public Health Ordinance
(Annual Report 1952 –Fiji). In accordance with the Public Health Act (Cap.111), Medical Officers
are required to notify all diseases and conditions listed on the National Notifiable Disease Surveillance
Schedule (Table 2). The notification pathways for NNDSS are shown in Figure 4.
Laboratories are required to notify laboratory-confirmed cases, as indicated in Table 2. Other health
professionals including nurses, nurse practitioners, and environmental health officers (health
inspectors) should also be aware of the list of diseases in the NNDSS schedule, and report any
suspected or confirmed cases to a medical officer as soon as possible. Note that for most diseases,
reporting by BOTH medical officers and laboratories are required.
URGENT ROUTINE
Poliomyelitis ✓ ✓ Tuberculosis:
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Figure 4. Notification pathways for the National Notifiable Diseases Surveillance System (NNDSS)
Clinical cases of influenza-like illness (ILI) and laboratory-confirmed cases of influenza are reported
weekly under the NNDSS, as shown in Figure 5. ILI is also reported in Syndromic Surveillance/
EWARS, discussed further in 2.2.6. There are also select sentinel surveillance sites, where medical
officers are trained in the collection of nasopharyngeal specimens for patients with ILI. These are sent
weekly to the National Influenza Centre (NIC) at FCCDC for monitoring influenza strains circulating
in Fiji.
All laboratory-confirmed cases of tuberculosis (TB) from the Twomey Tuberculosis Hospital in Suva
should be reported under the TB surveillance system, as shown in Figure 6, and the NNDSS.
Clinical and laboratory-confirmed cases of Vaccine Preventable Diseases (VPD) are reported quarterly
as shown in Figure 7, but some conditions highly infectious diseases that may cause serious morbidity
and mortality (e.g. measles) require urgent reporting under NNDSS (Table 2.)
The Hospital Based Active Surveillance system monitors the following conditions at 21 sites in Fiji:
§ Clinical cases of acute flaccid paralysis (for polio), neonatal tetanus, and acute fever and rash
(for measles/rubella)
§ Laboratory-confirmed cases of measles and rubella
This active surveillance system is important for the surveillance of diseases that should be prevented by
our national immunisation program (VPD). And also include certain diseases (e.g. measles) that are
highly infectious and cause serious morbidity and mortality, particularly in children. HBAS may be
considered complementary to VPD surveillance in the NNDSS.
Reporting is conducted monthly as shown in Figure 8, but note that some conditions require urgent
reporting through the NNDSS, e.g. measles (Table 2.)
Syndromic surveillance is intended for use as early warning for outbreaks of communicable disease.
The weekly reporting of syndromes, rather than confirmed diseases, is key to timely alert of a potential
outbreak, as often, in resource-limited settings, requiring laboratory confirmation results in delays in
reporting and response. Once an alert is generated, through the surpassing of a predetermined syndrome
An additional four syndromes have been monitored since the introduction of EWARS in April 2016:
§ Bloody diarrhoea
§ Acute jaundice syndrome
§ Suspected meningitis
§ Zika-like illness
Each syndrome is described in detail under Section 3 of this manual. The reporting pathways for
syndromic surveillance are shown in Figure 9. Core syndromic surveillance conditions are also
reported to PPHSN, contributing to the Pacific Syndromic Surveillance Report, which is updated
weekly via the PacNET email listserv.
The event-based surveillance system is intended to monitor unusual events, not only in humans, but
also in birds, animals, and the environment. Events of interest include diseases in humans, clusters of
Under the International Health Regulations (IHR 2005), any suspected disease outbreak or other public
health event that is considered to be of potential Public Health Emergency of International Concern
(PHEIC) must be reported as soon as possible to the WHO. The National IHR Focal Point (NFP) is
responsible for reporting to the WHO. Currently, the NACD is the NFP. For assistance on what may be
considered as a potential PHEIC, and mandatory timelines for notification, see the IHR Decision
Instrument in Appendix A.3.
The key persons responsible for providing feedback and reports of surveillance data are the:
§ DMO – responsible for monitoring all urgent notifications in their Division, and reports
regularly to the NACD, Deputy Secretaries, HIU, and the reporting medical officers
§ FCCDC (designated medical or surveillance officer) – responsible for producing monthly
reports of all urgent NNDSS notifications, Syndromic Surveillance/EWARS, LTD, Influenza,
HBAS, VPD, and outbreaks, including epidemiological analyses such as case numbers (by age,
sex, and Division), disease incidence rate, epidemic curves, and outbreak thresholds.
§ Epidemiologist in charge of the HIU at the Fiji MHMS – responsible for collating, analysing,
and disseminating reports of routine NNDSS notifications.
Although the Public Health Act (Cap.111) specifies that Medical Officers are obligated to report
notifiable diseases listed in the NNDSS, it is important that other health workers also take
responsibilities for surveillance and notification, helping ensure that diseases are notified promptly and
accurately. Table 3 summarises the roles and responsibilities for each health professional or team. If
any clarifications are required, e.g. for unusual situations, please refer to the Divisional Medical
Officer and Divisional Health Inspector.
Responsible
Roles and Responsibilities
Officer/Team
Fiji Centre for § Receive urgent notifications within 24 hours of suspected or confirmed
Communicable Disease cases of urgent notifiable diseases (NNDSS)
Control (FCCDC) § Provide monthly reports on urgent notifications and outbreaks to the Fiji
MHMS, including epidemiological analyses such as case numbers by
(by age, sex, and Division), disease incidence, epidemic curves, and
outbreak thresholds
§ Provide technical advice and assistance as requested by Divisions and
medical officers
§ Conduct risk assessment of diseases of public health importance,
determine seriousness of public health events and the likelihood of
international spread
§ Notify WHO of potential public health emergency of international
concern (PHEIC) under IHR 2005
§ Report syndromic surveillance data to PPHSN
§ Liaise with external partners as required, including WHO, SPC, PPHSN,
US CDC, NGOs, and researchers.
§ Manage the Early Warning Alert and Response System (EWARS)
including oversight of data collection, collation and feedback on
indicator-based syndromic surveillance and event-based surveillance of
communicable disease threats and their verification, risk assessment and
investigation/response as required.
Health Information Unit § Receive all routine notifications from Medical Officers and Laboratories
via the NNDSS Notification Form within 7 days of suspected or
confirmed disease
§ Collate, analyse and interpret NNDSS data for Fiji MHMS
§ Monitor disease trends at the national level
§ Provide technical advice and assistance as requested by medical officers
§ Disseminate surveillance reports to medical officers and key
stakeholders and upload reports onto the Fiji MHMS website
Divisional Outbreak § Respond to Divisional outbreaks (see Section 2.9) and submit outbreak
Divisional Medical § Receive telephone report of all urgent notifications and notification
Officer (DMO) forms within 24 hours.
§ Receive notification forms of all routine notifications within 7 days
§ Collect, collate and analyse surveillance data from the division provided
by SDMO’s, MO’s, Manager Clinical Services, Laboratories, Risk
Management Committees, etc.
§ Consolidates divisional surveillance data and provide feedback to
NACD, PSHMS, HIU and notifying medical officers
§ Receive Syndromic Surveillance/EWARS data and ensure verification
of alerts by Divisional/Subdivisional team
§ Liaise with the PSHMS, divisional clinical health services, other
stakeholders and FCCDC regarding any alerts or outbreak response
activities
Sub-Divisional Outbreak § Respond to Sub-Divisional outbreaks (see Section 2.9) and submit
Response Team (SORT) outbreak reports to DMOs
Sub-Divisional Medical § Notify DMO & FCCDC on urgent notifiable diseases within 24 hours
Officer (SDMO) § Notify DMO, HIU on routine notifiable diseases within 7 days
§ Notify DMO of any notifiable disease events e.g. outbreaks in the area
§ Collate & analyse subdivisional notifiable disease report and provide
feedback to staff
§ Receive Syndromic Surveillance/EWARS data and ensure verification
of alerts by Subdivisional team
Medical Superintendent § Notify Directors, public health managers, clinicians, pharmacist, and
laboratories of public health events or threats within the institution
§ Notify the respective DMO of any urgent notifiable diseases or
Area Medical Officers / § Notify DMO & FCCDC of Urgent notifiable conditions within 24 hrs.
General Practitioners / § Notify DMO, HIU of Routine notifiable conditions within 7 days
Nurse Practitioners § Collate weekly/monthly data for tabulation and analysis
§ Report suspected disease outbreaks to DMO
§ When an unusual death occurs, the clinical team should also conduct a
root cause analysis (RCA) investigation
Laboratories § Notify DMO & FCCDC of urgent notifiable conditions with 24 hrs
§ Notify DMO, HIU of routine notifiable conditions within 7 days
§ Notify Risk Management Committee & requesting doctor of any
notifiable conditions
§ Collate quarterly data for tabulation and analysis
§ Report LTD data weekly to DMO and FCCDC
Border control and § Report infectious diseases listed in the NNDSS (Table 2), and other
Biosecurity Authority of issues of public health concern
Fiji (BAF)
Clinical laboratories are located at each of the Divisional Hospitals (Colonial War Memorial Hospital
in Suva, Labasa Hospital, and Lautoka Hospital) and Sub-Divisional Hospitals. Laboratory tests for
tuberculosis are conducted at the Daulako Mycobacterium Reference Laboratory at the TB Hospital in
Suva.
For some communicable disease, e.g. measles and rubella, diagnostic tests are only available at the
National Public Health Laboratory at FCCDC (see below). For others, e.g. dengue and leptospirosis,
rapid diagnostic tests (RDTs) are available at the clinical laboratories, but further testing such as
ELISA immunoassays need to be referred to the NPHL. Please contact your laboratory for information
on diagnostic tests available.
The Fiji Centre for Communicable Disease Control (FCCDC) National Public Health Laboratory
(NPHL) is based at Mataika House, and provides services and testing for:
§ Chikungunya ELISA
§ Chlamydia NAAT
§ Dengue ELISA
§ HIV confirmation ELISA (will be decentralised to Divisional and Sub-Divisional Hospitals –
quality control will continue at NPHL)
§ HIV viral load
§ Influenza RT-PCR (part of the WHO global network of National Influenza Centres)
§ Leptospirosis ELISA
§ Measles ELISA
§ Rubella ELISA
§ Rotavirus ELISA
§ Water samples (environmental and drinking water)
§ Other communicable diseases (contact NPHL staff)
Any changes to laboratory testing will be incorporated into NPHL and Clinical Handbooks and
uploaded onto the electronic repository on the Fiji MHMS website.
The NPHL is also responsible for sending specimens to overseas reference laboratories for tests that
are not performed in Fiji. The NPHL’s Standard Operating Procedure for referral of outbreak prone
disease samples provides a summary of the diagnostic tests available at each of the regional reference
laboratories, contact information, and procedures for referring and shipping samples.
Please see Table 2 for the list of diseases that laboratories are required to notify.
Divisional, Sub-Divisional, and private laboratories should report Notifiable Diseases to:
During outbreaks, it is not necessary to conduct laboratory diagnostic tests on all suspected cases. The
following guidelines help to reduce the number of tests ordered, and the unnecessary drain on
resources. In Fiji, this is particularly important during leptospirosis and typhoid outbreaks.
Once an outbreak of leptospirosis or typhoid has been declared, clinicians should make diagnoses
based primarily on case definitions and clinical judgement, and limit the number of laboratory tests
ordered because:
§ Supplies of diagnostic tests are often limited and can be rapidly depleted,
§ Laboratories have limited capacity and are unable to process all samples in a timely manner
when inundated with requests, and
§ In an outbreak situation, management of patients with suspected leptospirosis or dengue should
be based on clinical judgement, regardless of the results of diagnostic tests. Please refer to the
national clinical guidelines for leptospirosis and typhoid.
Suggested strategies for limiting the use of leptospirosis RDT and ELISAs:
§ Recommendations on limiting the use of RDTs once an outbreak has been declared:
o RDTs detect antibodies that do not appear until at least 5 days after the onset of illness.
RDTs should therefore only be used in Divisional and Subdivisional laboratories if the
onset of illness is ≥5 days.
§ Recommendations on limiting the use of ELISA once an outbreak has been declared:
o All RDT +ve samples should be referred to the NPHL at Mataika House for ELISA
o For RDT –ve samples, only send 10% of samples from suspected cases should be sent to
NPHL.
o To ensure that the surveillance team is able to capture the TOTAL number of suspected
cases, a line list of ALL suspected cases should be sent to the NPHL at Mataika House.
The line list should indicate whether a sample has been sent for ELISA.
§ ***Please note that the date of onset should be included on all request forms so that RDT and
ELISA results can be appropriately interpreted
Suggested strategies for limiting the use of dengue RDTs and ELISAs:
§ Once a dengue outbreak has been declared, RDTs (NS1, IgM and IgG) should only be
performed on 10% of suspected cases at Divisional and Subdivisional laboratories.
§ All samples tested with RDTs should be sent to Mataika House for ELISA and NS1
§ The following samples should be referred to an international reference laboratory for
serotyping:
o All NS1 Ag positive samples
o 30% of IgM and NS1 negative samples
• Please refer to the new flowchart on Laboratory Referral Protocol for Arbovirus Testing for
guidance on appropriate requests for laboratory tests
Shipment of diagnostic kits and consumables from international supplies can take weeks or even
months. To ensure that supplies are available in case of an outbreak, the following estimates should be
considered.
• Routine supplies – these should be estimated from volumes used by Divisions and Subdivisions
in previous years, and ordered routinely.
• Buffer supplies – these are in addition to routine supplies to ensure diagnostic tests are available
at the beginning of an outbreak. Take into consideration how long it takes for new supplies to
be shipped, e.g. if it usually takes 4 weeks for leptospirosis RDTs to be shipped, there should be
sufficient buffer supplies to cover for the first month of an outbreak.
• Outbreak supplies - once an outbreak has been declared, emergency funds will be allocated
from MHMS for procurement of additional supplies. Assistance from external partners (e.g.
WHO) might be required for large outbreaks.
o Request assistance from FCCDC and WHO to estimate outbreak supplies might be
required
2.7. Supplies
Fiji Pharmaceutical and Biomedical Services (FPBS) Centre is responsible for coordinating
procurement, warehousing and distribution of supplies required for outbreak responses. Supplies
include medicines, medical consumables and medical laboratory reagents and consumables. It is critical
that a successful response to an outbreak in relations to supplies is dependent on effective planning
management with the stakeholders the preparedness phase that will ensure undisrupted supplies.
The person responsible for calling an outbreak will vary depending on the size of the outbreak and the
resources required, as summarised in Table 4. However, existing MHMS hierarchies and reporting
pathways must be followed. Ultimately, a decision on declaring an outbreak, and announcing to the
public, will be based upon expert consultation through the DORTs, NTCOPD, with the NACD and
other relevant National Advisors, and other local and international authorities as required. Also,
responsibility for declaration may be delegated, but primarily resides with listed persons in Table 4.
National outbreak Require mobilisation of resources from other Minister for Health and
Ministries or other external sources of Medical Services
funding including international partners e.g.
WHO, NGOs
Outbreak of Able to manage using existing resources Minister for Health and
international concern within Fiji Medical Services
Outbreak of Require assistance from external partners, e.g. Minister for Health and
international concern WHO, NGOs Medical Services
*Subject to existing MHMS reporting structures i.e. DMOs require PSHMS endorsement.
Once an outbreak has been declared, DORT and SORT teams may seek additional resources required
for response measures from MHMS. To ensure timely response activities, approval for additional
resources should be given as soon as possible, and no later than 5 working days from the declaration of
an outbreak.
If an outbreak is classified as disaster, disaster funds can be accessed for outbreak response.
Divisional/Central Board of Health can also be mobilised in outbreak situations.
The National Taskforce for the Control of Outbreak-Prone Diseases (NTCOPD) provides strategic
advice for the management of outbreaks.* The NTCOPD consists of the following members:
DSPH is the chair and FCCDC is the secretariat with support from NACD. The Terms of Reference for
NTCOPD outlines its membership and the technical working groups.
§ To develop strategy to control the outbreak and allocate responsibility for taking action
§ To review evidence and confirm or deny the existence of an outbreak.
§ To prevent further cases by taking all necessary steps to ensure that the sources of the outbreak
is controlled or the cause is removed
§ To communicate findings to other divisions and stakeholders to prevent cases elsewhere.
§ To prevent secondary spread of infections by controlling or isolating cases, and by identifying
and managing contacts appropriately
§ To provide an accurate and responsible source of information for other professionals, the media
and most importantly the public
§ To document the investigations and control measures
§ To efficiently provide a report to the PSHMS
* The review of the NTCOPD in May 2018 resulted in revision to its Terms of Reference and a name change to the
Fiji Communicable Disease Committee (FCDC). However, the core functions of the committee remain.
48
Team members may include:
The Outbreak Response Team (DORT or SORT) is responsible for planning, coordinating and carrying
out the response in collaboration with other partners as appropriate, including:
§ FCCDC, including the National Advisor for Communicable Diseases (NACD), surveillance
officer, and medical officers
§ National Taskforce for the Control of Outbreak Prone Diseases (NTCOPD)
§ Epidemiologist at the Fiji MHMS
§ National Advisor for Environmental Health (NAEH)
§ Other National Advisors and National Health Executives as appropriate
§ Other stakeholders
TECHNICAL)WORKING)GROUPS)
Surveillance( Other(( NPHL(
NACD(
Clinical( Leads(of( NaConal(
TWGs( Advisors( NTCOPD)
CommunicaCons(
NAEH(
PrevenCon(&(Control( HEADMAP(
InfecCon(( Divisional(
Control((
Divisional(( Divisional(( Divisional(( DORT) Labs(
Div(Surveill(
Officer( Health(Sister( Medical(Officer( EHOs(
FPBS(&( Commissioner(
Supplies(
Area(Medical(
District/Zone( Area(
Officer/(
Nurse( EHOs( Provincial(
NP(
Administrator(
Clerical(Officer(
Table 5 provides a guide to the roles and responsibilities of different team members. The team leader
(DMO/SDMO) will be responsible for delegating team members with specific tasks. Depending on the
nature of the outbreak, an effective and timely response might involve tasks not listed in the table.
Divisional Medical § The focal person to coordinate divisional outbreak investigations and
Officer (DMO) control activities (particularly where more than 1 subdivision is
affected)
§ Liaise with DSPH, MHMS and FCCDC if the Division requires
technical assistance in the field
§ Lead the divisional outbreak response team (DORT), while the Deputy
Secretary of Public Health oversees the overall response at national
level
§ Play a key role during outbreak investigations and is a point of liaison
between the divisional health services, Ministry of Health (Public
Health Division), Media and other stakeholders for rapid dissemination
of information about an impending threat or outbreak.
§ Activate the outbreak protocols and mobilise the outbreak response team
to control activities
Sub-Divisional Medical § Lead the Subdivisional Outbreak Response Team (SORT) and develop
Officer (SDMO) the team’s capacity to detect and respond to outbreaks
§ Coordinate outbreak investigation when it is localised to the subdivision
Medical Superintendent § Responsible for clinical issues associated with Divisional outbreaks
§ Liaise with the DMOs and laboratories
§ Determine and plan for surge capacity as a consequence of an epidemic
or pandemic at national or Divisional level
Medical Officer § Assist the SDMO in investigating and responding to an outbreak in their
medical area
§ If outbreak is in another medical area, medical officers may be co-opted
when the need arises
§ Build team capacity to assess and report an outbreak immediately to
SDMO/DMO
§ When an unusual death occurs, the clinical team should also conduct a
root cause analysis (RCA) investigation
Divisional and Sub- § Assist teams in field investigation and clinical management of cases
divisional Health Sister § Communicate prevention awareness to community
§ Assist, implement interventions/control measures
§ Monitor and evaluate interventions
Infection Prevention & § As part of the DORT and SORT teams, coordinate case investigations
Control Officer and reporting
Divisional Surveillance § As part of the DORT, collate surveillance data and produce timely and
Officer up-to-date epidemiological reports
§ Case investigations to be conducted electronically, using standard case investigation forms that
are accessible using smart phones or tablets. Electronic data collection will allow completed
forms to be submitted immediately to a central database, and for data to be collated rapidly.
Smart phones can also collect GPS coordinates during case investigations, and allow mapping
of cases and detection of clusters.
§ The electronic databases can be accessed in real time by multiple people or groups who are
involved in the outbreak response, including NACD, NTCOPD, DORT, and SORT.
Well-planned communication can enhance communicable disease outbreak preparation and can hasten
containment of an outbreak, as well as help to mitigate an outbreak’s social and economic impact. The
objectives of communicable disease outbreak response are to i) take care of patients, ii) prevent further
Outbreak responses are planned according to recognizable phases – pre-outbreak, outbreak, post-
outbreak and review and development. Outbreak communication should also be organized and
coordinated with these phases: from preparedness, to eruption, to clean up and recovery into
evaluation. The communications team should be proactive with planning (e.g. during high risk times
such as after severe flooding), and seeking information (e.g. maintaining regular contact with the
surveillance officer). Appendix B provides a step-by-step guide on how to plan and implement
communication during each phase of an outbreak.
§ Internal stakeholders include the Minister for Health and Medical Services, PSHMS,
Deputy Secretaries (DSPH and DSHS), NACD, FCCDC surveillance team, and other
relevant groups within the Fiji Ministry of Health & Medical Services.
§ External stakeholders include the general public, national media, and industry.
The stakeholders will depend on the disease, and the size, severity (e.g. deaths), and location of
the outbreak. A checklist of potential stakeholders is included in Appendix B.
Outbreak communication with the public and media should aim to:
§ Build trust
§ Announce early
§ Be transparent
§ Anticipate queries (from public and media)
§ Respect public concerns
§ Be inclusive
§ Plan carefully in advance and evaluate your efforts
§ Surveillance Officer at Mataika House: data on the outbreak, number of cases, locations of
outbreaks, etc.
§ NTCOPD meetings for all technical working groups (or Secretariat to distribute Minutes of the
meetings if unable to attend): data about outbreak-prone diseases, current outbreaks, progress of
outbreaks
§ Environmental health officers (health inspectors): prevention strategies, what has been done
about the outbreak, and future activities
§ DMOs (Divisional medical officers), SDMOs (Subdivisional medical officers), and clinicians:
feedback about public misunderstanding, misinformation, rumours, and fears. The
communications team should address these as soon as possible to prevent problems from
escalating
§ Other government ministries as applicable e.g. Ministry of Agriculture, Ministry of Tourism
§ WHO and US CDC websites: general information about diseases, including symptoms, signs,
complications, routes of transmission, and global situation
§ The Lead Media Liaison Officer (MLO) at the Fiji MHMS is responsible for coordinating
communications and release of information to the media.
§ Only the following persons are authorised to speak to the media regarding communicable
disease outbreaks:
o Minister for Health and Medical Services
o Permanent Secretary for Health and Medical Services (PSHMS)
o National Advisor for Communicable Diseases (NACD)
o Media Liaison Officer (MLO)
Note: If you are approached by the media for information regarding communicable disease
outbreaks, please refer to the one of the above persons.
§ Press releases are drafted by the MLO in consultation with the NACD and approved by the
Minister for Health and Medical Services or PSHMS before they are released to the media. A
template for media release is shown in Appendix B.
§ The MLO is responsible for providing situational updates to the media, and determining the
frequency of updates depending on the progress of the outbreak.
§ Requests for communicable disease information from international media should be directed
to the MLO who will consult with the NACD for a response which is then approved by the PS
and/or Minister for Health and Medical Services.
Once transmission of disease has been interrupted with no new cases occurring and/or the known
risk is considered to be no longer a threat, the Outbreak Response Team will be responsible for
scaling down outbreak response.
§ Conduct on-going surveillance for cases, environmental threats, or other exposure risks
§ Advise all groups involved in outbreak response so that activities can return to routine levels
and/or procedures. This includes DORT and SORT teams, laboratories, supplies, and
pharmacy.
§ Ensure effective and up-to-date communication to the public and stakeholders
§ Produce a summary outbreak report, and provide it to the Deputy secretary of Public
Health, FCCDC and key stakeholders
§ Evaluate the outbreak response
The DORT or SORT should evaluate their response to the outbreak, in collaboration with FCCDC
and NACD if required, considering the following questions:
§ How effective was the response?
§ How efficiently was the response conducted?
§ Were policies, protocols and guidelines followed?
§ Were policies, protocols and guidelines sufficient to support the response?
§ What would we do differently to improve this response?
§ Have we learned anything that should be shared with others, including things that could
improve current protocols and guidelines?
The evaluation process should be seen an opportunities to train and teach others based on the
experience of investigating and responding to the outbreak.
The scale of response required to mange and control an outbreak will vary and should be assessed
on a case-by-case basis. Response to large-scale outbreaks with national and international
Figure 12. Links between National Disaster Management Plan (NDMO) and other national plans (Fiji
HEADMAP 2013-2017)
Figures 13 shows the Fiji National Disaster Management Structure, and Figure 14 outlines the
National Health Emergency & Disaster Management Structure as defined in HEADMAP,
including coordination at various levels of service within the Ministry of Health. These guidelines
outline the separate roles and responsibilities for different units within this structure as they relate
to communicable disease outbreaks.
Figure 14. National Health Emergency & Disaster Management Structure (Fiji HEADMAP 2013-2017
The NACD acts as the focal point for liaising with external partners, upon the mandate of the DSPH
and PSHMS. External partners include the WHO, SPC, PPHSN, US CDC, NGOs, and researchers.
Support from external partners might be required when responding to disease outbreaks, particularly
for:
2.15.2. Donations.
During an outbreak or public health emergency, external partners might offer donations such as:
In order to expedite the use of donations during an outbreak or public health emergency:
§ Approval for accepting donations should be granted within 5 working days from the
confirmation of an outbreak
§ Items on the pre-approved list (to be developed) can be accepted without official approval
The Quarantine Act of Fiji (Cap. 112) stipulates actions related to the arrival of suspected or infected
persons, vessels, aircrafts or goods into Fiji. Sections relevant to outbreak response include procedures
for infected or suspected vessel or aircraft, compulsory disease notifications by masters of vessels,
measures to be undertaken when infectious disease ends fatally, measures for dealing with vessels
arriving from malaria-endemic and infected areas, provisions relating to quarantinable diseases,
measures applied to persons/vessels arriving from infected places, and measures for preventing the
transmission of quarantinable or other infectious diseases (also need to refer to protocols, if available,
from the environment health unit).
Currently, there are no specific policies or protocols for quarantining people who refuse treatment for
infectious diseases such as tuberculosis. It is recommended that policies and protocols be developed
for managing people who refuse treatment if their refusal poses a health risk to the general public.
§ Plague
§ Cholera
§ Yellow Fever
§ Typhus Fever
§ Relapsing Fever
§ Smallpox
Information on how to deal with each of the above diseases is detailed in Part VII of the Act.
Part VIII of the Act details actions that may be taken for:
Persons arriving from an infected place: “The Authority may take, after disembarkation, the
measures which he considers appropriate to ensure the surveillance or observation of persons arriving
on a vessel or aircraft coming from, or touching at, any place infected with a quarantinable disease,
who are not protected, to the satisfaction of the Authority, by vaccination against such disease.”
Persons arriving from an area infected with acute anterior poliomyelitis, measles, influenzae or
whooping cough: “All persons arriving in Fiji by air from an area infected with acute anterior
poliomyelitis, influenza, measles or whooping cough may at the discretion of the Authority be placed
under surveillance or observation.”
An electronic repository will be set up on the Fiji MHMS website for clinical guidelines, action plans,
standard operating procedures (SOP), policies, procedures, forms, templates, references, and other
relevant documents.
The repository will be made available on the public domain (i.e. without the need to log in), so that
they may be accessed easily. Other countries, especially other Pacific Islands, might also like to view
§ For routine documents: the Technical Working Groups (TWG) will submit new documents to
the NTCOPD, NHEC and PSHMS for endorsement.
§ For urgent documents: In emergency situations, or where there are only minor amendments to
existing documents, the responsible TWG will submit the documents to the NTCOPD and then
the PSHMS for endorsement.
2. Endorsed documents should be submitted to Health Policy and Planning at MHMS, who will act as
a “library” for the documents and arrange for documents to be uploaded onto the repository by IT.
§ Setting up a website for the repository, including appropriate layout and classifications
§ Uploading new documents
§ Assisting with accessibility in remote areas, e.g. setting up internet access
§ Include updates to the repository on the MHMS circular/newsletters
In addition, four syndromes have been monitored by the new EWARS initiative from April 2016:
§ NACD
§ DMO
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Reasons for Surveillance for acute fever and rash (AFR) was started to detect possible measles
monitoring this outbreaks at an early stage. There are many other causes of AFR that can be clinically
syndrome difficult to distinguish from measles. It is therefore important to send a blood sample for
measles serology as soon as possible.
Signs & symptoms Acute onset of fever ≥38oC, and a non-vesicular rash (no blisters) that appears a few days
after the fever.
Note: chicken pox does NOT fit the case definition of AFR because the rash is vesicular
(blisters)
Pathogens & § Measles – this is the most important diagnosis that we are looking for when doing
diseases that can syndromic surveillance for AFR
cause this § Rubella (German measles)
syndrome § Dengue
§ Leptospirosis
§ Chikungunya
§ Zika
§ Drug reactions
§ Meningococaemia
§ Other viral rash, e.g. parvovirus B19, Coxsackie A, roseola
Laboratory Venous blood sample or filter paper sample (dried blood spot) for measles serology
investigations If temp >38oC, blood cultures should also be taken.
If dengue or leptospirosis suspected, and onset of illness is ≥5 days, rapid diagnostic tests
(RDTs) should be used.
Collect paired sera if possible (2 weeks apart) – this is very helpful for confirming a
diagnosis of many infectious diseases.
Infection Control Manage as a suspected measles case until result of laboratory testing for measles is
(Clinical/Hospital) negative, or until an alternative diagnosis is made. Give patient a mask to wear and keep
away from other patients as much as possible (e.g. separate room if available).
Use STANDARD and AIRBORNE precautions (see Appendix A.1)
Public Health § Single case: focus on establishing a diagnosis and be alert for additional cases.
Response – § Cluster of cases: investigation should be started without waiting for laboratory
Investigation, confirmation.
Prevention &
Control
Case investigations should include information on:
Additional § PPHSN Acute Fever & Rash (AFR) Case Investigation Form:
resources http://www.pphsn.net/surveillance/hbas/annexb2-afr_case_investigation_form.pdf
§ PPHSN AFR Laboratory Request Form:
http://www.pphsn.net/surveillance/hbas/annexc2-afr_laboratory_request_form.pdf
§ Pacific Hospital Based Active Surveillance System
http://www.pphsn.net/surveillance/HBAS.htm
§ WHO Western Pacific Region. Measles Elimination Field Guide 2013:
http://www.wpro.who.int/immunization/documents/measles_elimination_field_guide
_2013/en/
§ WHO. 2013. Pocket book of hospital care for children. 2nd edition:
http://apps.who.int/iris/bitstream/10665/81170/1/9789241548373_eng.pdf
Other comments
Alert threshold: Number of cases required Twice the number of cases seen in the previous 2
to trigger a notification and investigation weeks OR a cluster of severe cases. A cluster is
defined as 2 or more epidemiologically linked cases.
Consider using rolling average as per PSSS, e.g.
>90% above all collated data to date.
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Reasons for For early detection of influenza outbreaks and virological sampling of cases for detection
monitoring this of new viruses. New influenza viruses can cause more serious disease and large
syndrome epidemics or pandemics.
Case definition Fever ≥38oC AND cough AND onset within past 10 days (Pacific Outbreak Manual
definition, modified in 2015 in in line with WHO surveillance standards)
Signs & symptoms Fever ≥38oC, cough, sore throat, runny nose, sneezing, headache, muscle aches, lethargy.
Sources of infection § For Influenza: humans, birds, and other animals (e.g. pigs)
(reservoir) § Severe acute respiratory syndrome (SARS): “spillover” infections (pathogens
crossing over from animals to humans) from multiple animal species
Laboratory Swabs from nose or throat (nasopharyngeal swabs) for Influenza and RSV (see NPHL
investigations Handbook for instructions for collection, storage and transport of swabs).
For cases with pneumonia, sputum should also be collected for culture.
In an outbreak, swabs may only be required for the initial cases to confirm diagnosis and
cause of the outbreak.
Clinical § Advise the patient to stay at home and sleep in a separate room if possible
management of § If in hospital, isolate in a separate room if possible
case § Consider antiviral treatment if at risk of severe disease and complications of
influenza, e.g. the elderly and those with co-morbidities
§ Consider antibiotic treatment if evidence of pneumonia
Management of § Close contacts of cases should be provided with information regarding hand hygiene
contacts and respiratory hygiene (avoid cough and sneezes of sick persons)
§ Advised to seek medical attention if develop severe symptoms
Public Health § Social distancing – advise cases to stay at home and isolate themselves to reduce the
Additional § Weekly surveillance report from PPHSN contains information on ILI reports from
resources the region: http://www.pphsn.net/surveillance/Syndromic.htm
§ WHO Influenza surveillance and monitoring website contains up-to-date information
on the global situation:
http://www.wpro.who.int/emerging_diseases/Influenza/en/index.html
Other comments
Alert threshold: Number of cases required Twice the number of cases seen in the previous 2
to trigger a notification and investigation weeks.
Consider using rolling average as per PSSS, e.g.
>90% above all collated data to date.
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
*For bloody diarrhoea, please see Section 3.6, under syndromes monitored by EWARS.
Signs & symptoms Diarrhoea, nausea, vomiting, abdominal cramps, malaise, fever.
Pathogens & Multiple – see Table 6 below for a summary of pathogens, incubation periods, clinical
diseases that can features, sources, and modes of transmission.
cause this
syndrome
Period of Variable depending on cause. Usually infectious while a person has symptoms and for a
infectiousness few more days afterwards. Some pathogens might not cause symptoms, but still be
infectious to other people.
Laboratory § Stool samples should be sent if any of the following are present:
investigations § Bloody diarrhoea (see Section 3.6)
§ Fever ≥38oC for >2 days
§ Severe watery diarrhoea
§ Severe dehydration (require IV fluids)
§ Cluster of linked cases
Clinical § The most important thin is to assess and maintain hydration. Oral rehydration and
management of electrolyte replacement is usually sufficient, but severe cases might require
case intravenous (IV) fluids.
§ Young children are at especially high risk of dehydration and should be monitored
closely.
§ For oral rehydration, use commercially available sachets of oral rehydration salts
(ORS) or feed regular food and fluids, e.g. soups.
§ Antibiotics are always recommended for dysentery (bloody diarrhoea). See section
3.6.
§ Antibiotics and anti-parasitic medications might also be recommended if pathogens
are cultured from stool samples.
Management of § Advise household contacts about hand hygiene, especially if caring for cases. E.g.
contacts washing hands carefully if ex
§ posed to vomit or faeces of cases.
§ Avoid sharing food or drinks with cases.
Public Health § Investigation should be conducted if there are linked cases, e.g. ate the same food, ate
Response – at the same restaurant, drank from the same water supply, or attend the same school.
Investigation, § Advise cases and care givers about hand hygiene, especially after going to the toilet,
Fiji guidelines & § Food Safety Act & Food Safety Regulations
protocols § National Public Health Laboratory Handbook – for instructions for collection, storage
and transport of stool samples for Rotavirus
§ National Public Health Laboratory Handbook – for instructions for collection, storage
and transport of environmental water samples
Additional § Weekly surveillance report from PPHSN contains information on diarrhoea from the
resources region: http://www.pphsn.net/surveillance/Syndromic.htm
Other comments
Incubation
Agent Clinical Features Reservoir Transmission
Period
Abdominal cramps,
Staphylococcus
0.5–8 hours vomiting and Humans Person to food
aureus toxin
diarrhoea
0.5–6 hours
Bacillus cereus (vomiting) Malaise, vomiting
Environment Food
toxin 6–24 hours and/or diarrhoea
(diarrhoea)
Few hours – 3
Vibrio cholerae Watery diarrhoea Humans, shellfish Food, water
days
Nausea, vomiting,
Vibrio
4–30 hours abdominal cramps Shellfish Food
parahaemolyticus
and diarrhoea
Abdominal cramps,
Clostridium
6–24 hours diarrhoea and Shellfish Food
perfringens toxin
nausea
Nausea, vomiting,
Person to
Norovirus 24–48 hours abdominal cramps, Humans, shellfish
person, food
diarrhoea, fever
Nausea and
Rotavirus 24–72 hours Humans Person to person
vomiting
Headache, fever,
abdominal cramps, Poultry, eggs, Food, animal to
Salmonella 6–72 hours
diarrhoea and animals person
nausea
Bloody diarrhoea,
Shigella 1–3 days abdominal cramps, Humans Person to person
fever
Fever, nausea,
Campylobacter 1–10 days abdominal cramps Poultry Food, water
and diarrhoea
Alert threshold: Number of cases required Twice the average number of cases seen in the
to trigger a notification and investigation previous 2 weeks.
Consider using rolling average as per PSSS, e.g.
>90% above all collated data to date.
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Signs & symptoms Variable depending on the cause. See case definitions and clinical guidelines for the
common diseases that cause prolonged fever
Public Health § Single cases of prolonged fever: focus on establishing a diagnosis and be alert for
Response – additional cases.
Investigation, § Clusters of cases of prolonged fever: investigation should be started without waiting
Prevention & for laboratory confirmation.
Control § Case investigations should include information on:
§ Age, sex, where they live
§ Immunisation history
§ Clinical details, including date of onset of symptoms
§ Laboratory test results
§ Contact with other cases
§ Recent travel overseas, or contact with travellers
§ School or work place
§ Recently visited places, including schools, work places, shopping centres,
Fiji guidelines & § Clinical Guidelines for Diagnosis and Management of Leptospirosis
protocols § Clinical Guidelines for Diagnosis, Management and Prevention of Typhoid
§ Flow charts for Diagnosis and Management of Dengue
§ Clinical Guidelines for Tuberculosis (under review)
Additional
resources
Other comments
Alert threshold: Number of cases required Twice the average number of cases seen in the
to trigger a notification and investigation previous 3 weeks.
Consider using rolling average as per PSSS, e.g.
>90% above all collated data to date.
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Case definition Fever ≥38oC for at least 2 days, AND two or more of the following:
(as per EWARS) § Nausea or vomiting
§ Muscle or joint pain
§ Severe headache or pain behind the eyes
§ Rash
§ Bleeding
Signs & symptoms In addition to the signs and symptoms listed under the case definition, patients with
severe dengue might also have:
In patients <15 years old, dengue may present as a vague febrile illness with a
§ For the other diseases that might cause this syndrome, incubation period is variable
depending on the cause.
Period of § Dengue is not transmitted directly from person to person, but during the febrile stage
infectiousness of the illness, mosquitoes can bite the infected person and transmit the infection to
others.
§ For the other diseases that might cause this syndrome, period of infectiousness
depends on the cause.
§ Use the IHR Decision Instrument (Appendix A.3) to determine whether reporting to
WHO under IHR 2005 is required.
Clinical § For dengue, see Section 4.5 and refer to Clinical Guidelines for dengue.
management of
Management of § Persons living in the same area as the patient should be advised about mosquito
contacts control measures (cleaning up breeding sites), and to use personal protective
measures to reduce the risk of bites.
Public Health § Single case: focus on establishing a diagnosis and be alert for additional cases.
Response – Samples (blood sample or dried blood spot) should be sent to confirm or eliminate a
Investigation, diagnosis of dengue. If confirmation, an investigation should be started immediately
Prevention & to find other cases.
Control § Clusters of cases: investigation should be started without waiting for laboratory
confirmation.
Fiji guidelines & § Flow charts, wall charts and pocket flip charts for dengue diagnosis and management
protocols from Fiji MHMS and CDC
Additional § WHO Dengue Guidelines for Diagnosis, Treatment, Prevention and Control:
resources http://whqlibdoc.who.int/publications/2009/9789241547871_eng.pdf
Other comments
Alert threshold: Number of cases required 3 cases in one location within a week, or twice the
to trigger a notification and investigation average number of cases seen in the previous 2 weeks
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
§ Campylobacter
§ Amoebic dysentry
Response § Stool specimens should be sent for all cases of acute bloody diarrhoea.
recommendations § Single case: focus on establishing a diagnosis and be alert for additional cases.
Other resources See Section 3.3 on Watery Diarrhoea and Table 6 for list of common pathogens.
Case definition Sudden onset of fever ≥38oC, AND one or more of the following:
§ Severe headache
§ Neck stiffness
§ Altered consciousness
Response § Single case: focus on establishing a diagnosis and be alert for additional cases.
recommendations Samples (blood cultures, lumbar puncture) should be sent to confirm or exclude
diagnosis of meningococcal infection. If confirmed, cases should be investigated
immediately to identify and manage contacts, and identify any additional cases.
Other resources Refer to Fiji Antibiotic Guidelines for use of prophylactic antibiotics for contacts of
confirmed cases of meningococcal infection.
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Case definition Jaundice (yellow eyes or dark urine) AND severe illness with or without fever
§ Hepatitis A & E
§ Epstein-Barr Virus
Response § Single case: focus on establishing a diagnosis and be alert for additional cases.
recommendations § Cluster of cases: Case investigations should be started without waiting for
laboratory confirmation.
Other resources Fiji Clinical Diagnosis and Management Guidelines for Leptospirosis
Threshold for declaring an outbreak Incidence rate >2 standard deviations above the
average for the last 5 non-outbreak years
Case definition Generalised maculopapular rash AND two or more of the following:
§ Arthralgia or myalgia
Response § Single case: focus on establishing a diagnosis and be alert for additional cases.
recommendations Samples (blood sample, urine sample) should be sent to confirm or eliminate a
diagnosis of Zika infection. If confirmation, an investigation should be started
immediately to find other cases.
Other resources See Section 4.13 on Zika, and the Fiji Zika Action Plan
All children under 15 years with acute flaccid paralysis (AFP), including those
considered to have Guillain-Barre syndrome, or persons at any age diagnosed as suspect
paralytic polio cases.
Any person in whom a poliovirus is isolated from an appropriate clinical specimen (e.g.,
stool, cerebrospinal fluid [CSF], or oropharyngeal secretions), with confirmatory typing
and sequencing performed by a recognised reference laboratory.
Signs & symptoms Nearly all (99%) polio infections are subclinical (have no symptoms) or give only a
vague fever illness. Cases with paralysis may begin with fever, feeling bad, headache
and nausea, followed by muscle pain or stiffness, and then partial or complete paralysis
in one or more limbs. There are decreased or absent tendon reflexes in the affected limbs
and no sensory loss. Onset is usually sudden and paralysis does not usually equally affect
both sides of the body. Up to 10% of paralytic cases in an epidemic die, usually due to
paralysis of the respiratory muscles.
Sources of infection Humans, especially those with asymptomatic infections. Humans do not become long-
(reservoir) term carriers.
Incubation period Usually 7–14 days, but can vary from 2 days to a month
Period of Polio virus can be found in the throat for about a week and in faeces for up to 6 weeks,
infectiousness but cases are most infectious a few days before and after the start of symptoms.
Laboratory § Collect 5–10 g of fresh stool from the patient (a ‘thumbnail’ quantity).
investigations § Use plastic screw-top container and place in the fridge, not freezer.
§ Follow standard packing and shipping procedure. Maintaining the cold chain (0–8°C)
§ Polio is required to be reported to WHO under IHR 2005 (See Appendix A.3)
Clinical Refer the patient immediately to hospital. Management is supportive only, but may
management of require mechanical ventilation.
case
Public Health § Single case of AFP should prompt an investigation, and a search for other cases in
Response – the area where the case lives. Contact WHO, SPC or CDC for guidance.
Investigation, § Refer to the HBAS Information Folder and the Acute Flaccid Paralysis Case
Prevention & Investigation Form (see additional resources below). Collect information on:
Control
• Age, sex and where they live;
• Place, time, source and type of any polio immunisations;
• Clinical details, including date of first symptoms, complications, and if the case
has any disease that affects the immune system
• Laboratory test results;
• Travel history
• Contact with other cases, travellers, or persons at risk for polio
• Whether the case attends a school or other institution.
§ Tumours
§ Toxins
§ Stroke
Other comments
No. Of cases required to trigger an investigation One confirmed case, if there is no known local
transmission
Acute onset of fever >38.5°C AND severe arthralgia/arthritis not explained by other
medical conditions AND residing in or having visited epidemic areas, having reported
transmission within 15 days prior to the onset of symptoms
Signs & symptoms Fever, arthralgia (often in the hand, wrist and ankle joints), backache and headache;
many patients also develop a short-lived maculopapular rash
Sources of infection Humans serve as the chikungunya virus reservoir during epidemic periods. During inter-
(reservoir) epidemic periods, a number of vertebrates have been implicated as reservoirs. These
include rodents, birds, and other vertebrates. The exact nature of the reservoir status in
the Pacific has not been documented.
Mode of Chikungunya virus is transmitted from one human to another by mosquitoes of the Aedes
transmission genus. These bite during the day, but mostly during the early morning and the evening.
People with chikungunya should be cared for under bed nets so that a mosquito cannot
bite them and then carry the infection to another person.
Laboratory A blood specimen should be collected in a red-top blood tube for testing of chikungunya
investigations antibodies or testing for chikungunya virus. This specimen should be refrigerated and
standard packing and shipping procedure should be followed. Rapid tests are also
available.
§ Use the IHR Decision Instrument to determine whether reporting to WHO under IHR
2005 is required (See Appendix A.3).
Clinical Treatment is symptomatic and paracetamol is the drug of choice. Avoid aspirin and other
management of non-steroidal anti-inflammatory drugs (NSAIDs), as a common differential diagnosis is
case dengue fever. Mild forms of exercise and physiotherapy are recommended in recovering
persons.
Refer cases with any of the following to a Divisional Hospital: pregnancy, low urine
output, hypotension, bleeding disorders, confusion, evidence of meningism (neck
stiffness + intolerance to bright light + headache), persistent fever of more than one
week’s duration, and extremes of age – persons above 60 years and infants (below one
year of age).
Management of Persons living in the area where a patient is thought to have been infected should be told
contacts of the risk of being bitten by chikungunya-infected mosquitoes, and should be asked to
do mosquito control including clean-up of mosquito breeding sites (things that collect
water, such as coconut shells, tyres, cans) and employ measures for personal protection,
such as mosquito repellent sprays and bed nets (see Appendix 7).
Public Health § Single case: focus on establishing a diagnosis and be alert for additional cases.
Response – § Cluster of cases: Case investigations should be started without waiting for laboratory
Investigation, confirmation.
Prevention &
§ Preventing mosquito bites is the best way to prevent infection.
Control
§ All suspected cases should be kept under mosquito nets during the febrile period.
§ Communities in the affected areas should be educated about the mosquito control
measures to be adopted in hospital premises and houses.
Differential § Leptospirosis
diagnoses § Dengue
§ Zika
§ Meningitis
§ Rheumatic fever
Other comments
Severe dehydration or death from acute watery diarrhoea in a patient aged 5 years or
more
§ Probable
§ Confirmed
Signs & symptoms Most cases have no symptoms or have mild diarrhoea. In severe cases there is quick
onset of a large amount of painless diarrhoea (‘rice water’ stools), occasional vomiting,
rapid dehydration and shock. The death rate is high (20%–30%) without correct
treatment.
Sources of infection Humans and occasionally shellfish; Vibrio cholerae is an environmental bug found in
(reservoir) saltwater and salty water bodies at low numbers, with increases by humans during
epidemics
Period of Usually only while diarrhoea lasts and for a few days after symptoms stop. Carrier state
infectiousness can occasionally persist for a several months. Tetracycline shortens the period of
infectiousness.
Clinical Assess whether (and how severely) the patient is dehydrated. Immediate rehydration
management of with oral rehydration solution (6 level teaspoons of sugar and . teaspoon of salt in 1 litre
case of safe water) or one packet of oral rehydration solution (ORS) mixed in 1 litre of safe
water) is the most important treatment.
Management of People at risk include household contacts, those who shared food or drinks with a case,
contacts or those who have been in contact with an infection source of a case.
Advise contacts to look out for signs and symptoms of cholera for 5 days after contact
with a case or exposure to a source. Advise contacts to seek medical care immediately if
symptoms develop.
To reduce the risk for further spread, contacts should be contacted daily for 5 days so
that new cases are identified and managed early.
Public Health § Epidemiological and environmental investigation required – try to identify potential
Response – sources and exposures including:
Investigation, § Contact with other people with diarrhoea
Prevention & § Untreated water sources
Control § Eating seafood, particularly shellfish
§ Travel to cholera-endemic areas
§ Preventive measures for food and water-borne diseases
§ Advice from international agencies might be required, e.g. WHO, SPC, CDC.
Additional § Cholera outbreak: assessing the outbreak response and improving preparedness:
resources http://www.who.int/cholera/publications/OutbreakAssessment/en/
§ The Treatment of Diarrhoea. A manual for physicians and other senior health
workers. WHO 2005:
http://www.who.int/maternal_child_adolescent/documents/9241593180/en/
Other comments
One or more of: nausea, vomiting or diarrhoea, and neurologic signs, within 24 hours of
eating reef fish
Ciguatera diagnosis is usually based on the clinical and epidemiologic features. Though
rarely done, it can be confirmed for a person with a clinically compatible illness after
eating reef fish, by detection of ciguatoxin in consumed fish by an approved testing
method.
Signs & symptoms Nausea, vomiting and/or diarrhoea. Ciguatera poisoning has neurologic symptoms such as
numbness and tingling, ataxia (unsteady movement and staggering walk) and temperature
reversal (cold things feel burning hot on the skin).
Sources of infection Problems are encountered with many fish types, including barracuda, snapper, coral
(reservoir) trout, Spanish mackerel, red emperor, wrasse, reef cod, sturgeon, trevally, kingfish,
grouper and amberjack.
Mode of Food-borne
transmission
Laboratory There are no widely available tests for human ciguatera. Leftover fish can be tested for
investigations ciguatera toxin, but in most cases this is not necessary or practical.
Notification § Notifiable disease under the National Notifiable Disease Surveillance System
(NNDSS)
Management of Further cases may occur in people who were exposed to the same meal as the case.
contacts: Provide information about what to do if they develop symptoms.
Public Health § An investigation should be conducted if the same fish has been eaten by others, so
Response – that other potential cases can be found and any remaining fish discarded. Cases should
Investigation, be interviewed to identify possible links to specific foods and sources of infection, for
Prevention & example a restaurant or a shared fish meal. An environmental investigation should
Control begin if a source is identified, and any leftover fish should be discarded.
§ Prevention: Avoiding eating large fish from certain reef areas is the only way to
prevent ciguatera fish poisoning. Check with local authorities to determine which fish
in your area present the highest risk. The public should be informed of the risk of
eating large fish, especially if there has been a recent case of ciguatera fish poisoning.
§ Botulism
Additional § Ciguatera Fish Poisoning: Treatment, Prevention and Management. 2008. Friedman,
resources M.A. Mar. Drugs 6:456–479: www.mdpi.com/1660-3397/6/3/456/pdf
Other comments
No. of cases required to Twice the average number of cases seen in the previous 3 weeks
trigger an investigation
Threshold for declaring an An OUTBREAK is declared if the incidence rate >2 standard
outbreak deviations above the average for the last 5 non-outbreak years.
(See Section 1.3 on declaring alerts and outbreaks).
Signs & symptoms In addition to the symptoms and signs described in the case definition: vomiting, pain
behind the eyes, and bleeding (e.g. petechial, mucosal). In patients <15 years old, dengue
may present as a vague febrile illness with a maculopapular (raised) rash.
Period of Not transmitted directly from person to person, but during the febrile stage of the illness,
infectiousness mosquitoes can bite the infected person and transmit the infection to others.
Mosquitoes remain infectious for life and are able to infect many other humans.
§ If tests are negative on the first set of samples, repeat tests when more than 5 days
from the onset of illness
§ If NS1 Ag positive, dried blood spots (DBS) should to be sent to ILM for serotyping
§ Use the IHR Decision Instrument (Appendix A.3) to determine if reporting to WHO
under IHR 2005 is required
§ Maintain hydration
Management of Advise to use mosquito-avoidance measures to reduce the risk of bites, and clean up
contacts potential mosquito breeding sites, e.g. stagnant water in car tyres, cans, flower pots and
vases, coconut shells.
Public Health § Single case: focus on establishing a diagnosis and be alert for additional cases.
Response – § Clusters of cases: investigation should be started without waiting for laboratory
Investigation, confirmation. Determine possible places of exposure so that control measures can be
Prevention & carried out and to identify further cases.
Control
§ Advise cases to use mosquito-avoidance measures to reduce the risk of spread to
others.
§ Mosquito avoidance measures include insect repellents, mosquito nets, fly screens,
and removing breeding sites around homes
Differential § Leptospirosis
diagnoses § Typhoid
§ Chikungunya
§ Zika
Fiji guidelines & § Flow charts, wall charts and pocket flip charts for dengue diagnosis and management
protocols from Fiji MHMS and CDC
Additional § WHO Dengue Guidelines for Diagnosis, Treatment, Prevention and Control:
resources http://whqlibdoc.who.int/publications/2009/9789241547871_eng.pdf
Other comments
An acute illness with sudden onset of symptoms and either jaundice (yellow skin or eyes,
or dark urine) or elevated liver enzymes
Signs & symptoms The usual clinical presentation is acute fever, feeling unwell, loss of appetite, nausea and
abdominal discomfort, followed a few days later by dark urine and jaundice. Symptoms
usually last several weeks.
Mode of Hepatitis A and E are transmitted almost entirely by faecal–oral transmission. It may
transmission occur through contamination of food resulting from poor food handling practices, faecal
contamination of drinking water or eating shellfish (for example oysters) from polluted
waters. There is some evidence that hepatitis E may also be transmitted by animals, in
particular pigs.
Period of From the last half of the incubation period to a few days after beginning of symptoms;
infectiousness usually no longer infectious after 1 week of jaundice
Laboratory A blood specimen should be collected in a red-top blood tube for serologic testing of
investigations hepatitis A virus antibody, hepatitis E antibody, hepatitis B panel, and possibly for
hepatitis C testing. This specimen should be refrigerated and standard packing and
shipping procedure should be followed.
§ All persons who ate uncooked food that was prepared by the case
Contacts should be advised to seek medical care if they develop jaundice. They should be
given advice about hygiene, in particular hand washing with soap and water after using
the toilet.
Public Health § Investigation: Information about exposures during the period 15 to 50 days before
Response – beginning of jaundice should be sought. This should include information about:
Investigation, § Household and sexual contacts who have had an illness that seems like hepatitis;
Prevention &
§ Restaurants where the case has eaten;
Control
§ Social gatherings where the case has eaten;
§ The case and caregivers should be informed about the infection and how it is
transmitted. Education should include information about hygienic practices,
particularly hand washing before preparing food and eating, and after going to the
toilet.
§ Cases should also be told not to prepare or handle food to be eaten by other people
§ Toxins
Other comments
Signs & symptoms Clinical presentations range from mild non-specific febrile illnesses to severe life
threatening complications, and can be difficult to distinguish from other infections.
Leptospirosis causes a biphasic illness with an early bacteraemic phase lasting 7 to 10
days, followed by a late phase associated with immunologically mediated organ damage,
severe complications and high mortality rates.
§ Early phase: acute onset of fever, myalgia, headache. Calf tenderness and
conjunctival suffusion are characteristic of leptospirosis but are not always present.
Other symptoms include anorexia, nausea, vomiting, abdominal pain, dizziness,
lethargy, malaise, arthralgia, eye pain, and photophobia. Rashes include macular,
papular and urticariform rashes, mostly on the trunk or pre-tibial areas. Symptoms in
the early phase are non-specific and often difficult to distinguish from other illnesses.
§ Late phase: Acute lung injury (including pulmonary haemorrhage), acute renal
failure, liver inflammation, haemorrhagic manifestations, myocarditis, and
neurological complications.
Sources of infection Mammals, including rodents, livestock, domestic pets, and wildlife.
(reservoir)
Mode of Humans become infected through contact with urine of infected animals. This could
transmission occur through direct contact with animals (e.g. farmers and abattoir workers) or contact
with an environment that has been contaminated with animal urine (e.g. freshwater, flood
waters, soil, and mud). Infection is more likely if skin is broken or damaged.
Period of Human to human transmission is extremely rare, but cases might be linked because of
infectiousness exposure to a common source.
Laboratory tests for confirmation of leptospirosis are not currently available in Fiji, and
include PCR, MAT, isolation of Leptospires by culture or in tissues.
See clinical guidelines for detailed description of general laboratory tests and findings.
§ Laboratories are required to report cases with positive leptospirosis diagnostic tests.
Clinical If a patient fits the definition for a suspected case, treatment should be started
management of immediately. Treatment should not be delayed if leptospirosis diagnostic tests are not
case available, or while waiting for laboratory results. All patients who fit the criteria for
suspected leptospirosis should be given antibiotics. First choice antibiotics include
Amoxycillin, Doxycycline, and crystalline penicillin (IV). See Fiji Clinical Guidelines
for Diagnosis and Management of Leptospirosis (2016) for detailed information on
antibiotics and management of complications.
Management of Human to human transmission is extremely rare. Contacts should be advised to take
contacts precautions to reduce exposure to potential infection sources, and seek medical advice if
they develop a fever or feel unwell.
Public Health § Case investigations should be conducted on all probable and confirmed cases. Two or
Response – more linked cases should be investigated urgently to identify any common sources of
Investigation, infection. Use standardised leptospirosis case investigation form (Appendix B).
Prevention & § Infection occurs through contact with animals or contact with an environment that
Control has been contaminated by animal urine. Avoid touching rodents and mongoose, and
§ Outbreaks of leptospirosis are most common during the wet season, particularly after
heavy rainfall, flooding, or cyclones. During high-risk times, communities should be
advised to avoid contact with floodwaters or swimming in rivers and streams. If
possible, gloves and boots should be worn during post-flooding clean up.
Differential § Dengue
diagnoses § Typhoid
§ Influenza
§ Meningitis
§ Acute hepatitis
Fiji guidelines & § Fiji Clinical Guidelines for Diagnosis and Management of Leptospirosis (2016)
protocols § Fiji Leptospirosis National Strategic Plan
Additional § WHO. 2003. Human leptospirosis: guidance for diagnosis, surveillance and control:
resources http://apps.who.int/iris/bitstream/10665/42667/1/WHO_CDS_CSR_EPH_2002.23.pd
f
Other comments
1. Fever ≥38oC, and maculopapular (raised, red, non-blistering) rash, and either cough or
runny nose or conjunctivitis. OR
§ Confirmed case:
Signs & symptoms Acute onset of fever ≥38oC, cough, red eyes, and runny nose. A generalised
maculopapular rash develops 3 to 7 days after the onset of illness, usually starting on the
face and head. Malnourished children are more likely to develop a severe illness.
Mode of Airborne transmission via breathing, coughing, and sneezing, or by contact with bodily
transmission secretions.
Period of From just before the onset of symptoms, until 4 days after the appearance of the rash.
infectiousness During this time, cases should be advised to:
§ Not participate in any group activities, including school, child care, work, or social
gatherings
§ Avoid contact with people who are not immune, especially pregnant women and
infants <1 year old who have not yet been vaccinated for measles
Laboratory Venous blood sample for Measles IgM (ELISA) – only available at NPHL at Mataika
During an outbreak, it is only necessary to send specimens for the first 5 cases – discuss
with NACD.
See NPHL Handbook for details on specimen collection, storage, and transport.
Use the IHR Decision Instrument (see Appendix A.3) to determine whether reporting to
WHO under IHR 2005 is required.
Clinical Measles is highly infectious until four days after appearance of rash and patients should
management of be isolated. Any child hospitalised with fever and rash should be isolated on admission.
case Paracetamol rather than aspirin should be used for fever in patients under 18 years of
age. A serious complication of measles is blindness in patients who are vitamin A
deficient. Consideration should be given to providing a vitamin A supplement in patients
at risk of vitamin A deficiency, including those patients who are malnourished.
Management of Anyone who has been in the same room as a case during the period of infectiousness is
contacts considered a contact.
Infection Control STANDARD, CONTACT, AND AIRBORNE precautions should all be used if measles
(Clinical/Hospital) is suspected or confirmed. See Appendix A.1.
Public Health § Single cases: focus on establishing a diagnosis and be alert for additional cases.
Response – Actively search for other cases that were in contact with the case – this should
Investigation, continue for at least 2 incubation periods (about 1 month).
Prevention & § Clusters of cases: case investigations should be started without waiting for
Control laboratory confirmation.
§ Case investigations should include information on:
§ Age, sex, where they live
§ Immunisation history
§ Clinical details, including date of onset of symptoms
§ Laboratory test results
Differential § Rubella
diagnoses § Scarlet fever
§ Glandular fever (infectious mononucleosis)
§ Dengue, Chikungunya, Zika
Additional § PPHSN Acute Fever & Rash (AFR) Case Investigation Form:
resources http://www.pphsn.net/surveillance/hbas/annexb2-afr_case_investigation_form.pdf
§ PPHSN AFR Laboratory Request Form:
http://www.pphsn.net/surveillance/hbas/annexc2-afr_laboratory_request_form.pdf
§ Pacific Hospital Based Active Surveillance System
http://www.pphsn.net/surveillance/HBAS.htm
§ WHO Western Pacific Region. Measles Elimination Field Guide 2013:
http://www.wpro.who.int/immunization/documents/measles_elimination_field_guide
_2013/en/
§ WHO. 2013. Pocket book of hospital care for children. 2nd edition:
http://apps.who.int/iris/bitstream/10665/81170/1/9789241548373_eng.pdf
§ CDC site on Measles: http://www.cdc.gov/vaccines/pubs/surv-manual/chpt07-
measles.html
Other comments
OR
A skin rash that spreads rapidly and begins as reddish/purplish spots (petechial or
purpuric rash) that does not fade when pressed under the bottom of a glass (the tumbler
test).
A clinically compatible illness AND close contact with a laboratory confirmed case
within the previous 60 days.
Culture of meningococcus from a normally sterile body site. This includes blood or
cerebrospinal fluid (CSF) or less commonly, joint, pleural (around the lungs), or
pericardial (around the heart) fluid, or fluid from the purpuric lesions of the rash. DNA
detection by PCR from a sterile site also confirms infection but is not widely available.
Signs & symptoms Acute fever with neurological signs/symptoms is concerning because it may be associated
with bacterial meningitis, including meningococcus infection.
A petechial or purpuric rash is present in most, but not all, patients with invasive
meningococcal disease but occur late (12-36 hours after symptom onset). A blanching
rash does not exclude meningococcus. In the early stages of the disease, the rash may not
be present or may be different. If present, it may be only a few tiny red/purple spots
located in a place such as the groin or feet.
The death rate may be more than 50% without treatment and is still 5%–10% with rapid
and appropriate antibiotic and supportive treatment.
Pathogen(s): Neisseria meningitidis bacteria, also referred to as ‘meningococcus’. The groups that
cause disease are A, B, C, W135, X and Y.
Sources of infection Humans. Meningococcal bacteria are carried in the nose and throat of people without
(reservoir) symptoms (carriers).
Mode of Respiratory droplets. Transmission usually occurs between very close contacts, in other
transmission words, household or kissing contacts.
Period of Patients are considered contagious until 24 hours after starting the correct intravenous
infectiousness antibiotics.
Laboratory If possible, blood cultures should be collected in all cases of suspected meningococcal
investigations disease before starting antibiotics. If possible, patients with symptoms of meningitis
should have a lumbar puncture (spinal tap) to obtain CSF as soon as possible, if it is safe
to do so. CSF should be cultured for meningococcus and other bacterial causes of
meningitis. Antibiotics should not be delayed while waiting for lumbar puncture.
Specimens should also be sent for identification of serogroup, in order to guide control
measures at the community level (e.g. if it is a vaccine-preventable serogroup).
Clinical Meningococcal disease can be fatal and should always be viewed as a medical
management of emergency. Admission to a hospital or health centre is necessary. If possible, patients
case should be isolated until 24 hours after antibiotics have started. If isolation is not possible,
droplet precautions should be used until 24 hours after antibiotics have been started.
Treatment:
§ Ceftriaxone IV/IM or Cefotaxime IV is the first choice antibiotic (to also cover
Streptococcus pneumoniae and Haemophilus influenzae type b in unimmunised
children). If unavailable, use penicillin IV/IM.
Pre-admission treatment for all ages is an immediate dose of IV/IM benzylpenicillin for
suspected meningococcal infections
Management of § The contacts most at risk of meningococcal disease are other members of the
contacts: household of a case of invasive meningococcal disease. The risk is greatest during
the first week after the case is detected and falls rapidly thereafter.
§ The focus of contact tracing is to identify close contacts and give them preventive
antibiotics. All close contacts, including household contacts, children and staff in
childcare centres, children sharing rooms, boarding schools and intimate (kissing)
partners in the 7 days before onset of the case’s symptoms, should be identified and
given information about the signs and symptoms of meningococcal disease. Other
close contacts include passengers seated immediately adjacent to the case during long
distance travel (>8 hours duration) by aeroplane, train, bus or other vehicle.
§ Rifampicin will not treat the infection in a person who may already be developing the
disease. It is to stop the carriage and possible further spread of the bacteria. If a
contact who has received Rifampicin develops symptoms of meningitis or
septicaemia they will still require treatment with intravenous antibiotics.
§ Rifampicin should not be given in pregnancy. Substitute ceftriaxone 250 mg (age >12
year) intramuscularly as a single dose.
§ Conduct surveillance for secondary cases among close contacts for 48 hours by
contacting them once a day and asking if they have symptoms.
Public Health § Investigation of single cases of meningococcal disease should start immediately to
Response – find other cases and manage contacts (see below). Information should be collected on:
Investigation, § The patient’s age, sex and where they live;
Prevention &
§ Clinical details, including date of first symptoms
Control
§ Lab test results
§ Close contacts
§ Prevention
§ Fungal meningitis
Additional § Invasive Meningococcal Disease CDNA National Guidelines for Public Health Units
resources (Australia) http://www.health.gov.au/internet/main/publishing.nsf/Content/cdna-
song-IMD.htm
§ Guidance for public health management of meningococcal disease in the UK. Health
Protection Agency Meningococcus and Haemophilus Forum. Updated March 2012.
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/32200
8/Guidance_for_management_of_meningococcal_disease_pdf.pdf
Other comments
4.10. Rubella
1. Fever (≥38oC), and maculopapular (non-blistering) rash and either joint pain or
swelling, enlarged lymph glands, or red eyes*,
OR
* If a person has fever and maculopapular (non-blistering) rash and red eyes, they also
meet the case definition of measles; in this situation, measles should be urgently ruled out
(with laboratory testing) before a diagnosis of rubella is made.
§ Confirmed case:
Signs & symptoms Fever and generalised maculopapular rash are the most common symptoms. Young
children usually have few or no other symptoms. Teenagers and adults may also have
headache, runny nose, and conjunctivitis. Swollen glands (lymph nodes) in the neck are
Period of For about 1 week before and at least 4 days after the appearance of rash.
infectiousness Rubella is highly infectious.
Laboratory Venous blood sample for Rubella IgM (ELISA), only available at Mataika House.
investigations During an outbreak, it is only necessary to send specimens for the first 5 cases.
§ Use the IHR Decision Instrument (see Appendix A.3) to determine whether reporting
to WHO under IHR 2005 is required.
Clinical Rubella is highly infectious until four days after appearance of rash and patients should
management of be isolated. Any child hospitalised with fever & rash should be isolated on admission.
case Paracetamol rather than aspirin should be used for fever in patients < 18 years of age.
Management of Anyone who has been in the same room as a case during the period of infectiousness is
contacts: considered a contact.
Ask contacts to be alert for acute fever and rash and advise those who develop symptoms
to call ahead, if possible, before seeking medical advice (so as to avoid common waiting
areas in health centres or hospitals and spreading the infection).
Public Health § Single cases: focus on establishing a diagnosis and be alert for additional cases.
Differential § Rubella
diagnoses § Scarlet fever
§ Glandular fever (infectious mononucleosis)
§ Dengue, Chikungunya, Zika
Additional § PPHSN Acute Fever & Rash (AFR) Case Investigation Form
resources http://www.pphsn.net/surveillance/HBAS/AnnexB2-
AFR_Case_Investigation_Form.pdf
§ PPHSN Laboratory Request Form
http://www.pphsn.net/surveillance/HBAS/AnnexC2-
AFR_Laboratory_Request_Form.pdf
§ Pacific Hospital Based Active Surveillance System – Information Folder
http://www.pphsn.net/surveillance/HBAS/Pacific_HBAS_Information_Folder-
July2005.pdf
§ Rubella in Pregnancy. Society of Obstetricians and Gynaecologists of Canada:
http://sogc.org/guidelines/rubella-in-pregnancy/
Other comments
§ AND cough;
Note: the case definition for SARI was modified in September 2015 in line with WHO
surveillance standards.
Signs & symptoms In addition to meeting the case definition, people with SARI may also have sore throat,
runny nose, headache, muscle aches, sneezing, chest pain and pleurisy (chest pain when
inhaling).
§ SARS-associated coronaviruses
Mode of Mainly person-to-person transmission. Less commonly from mammals, such as pigs, and
transmission birds to humans.
Laboratory § Swabs from the back of the nose or throat (nasopharyngeal) should be collected and
investigations tested for influenza (and RSV where available) by a variety of methods, including
immunofluorescence microscopy, polymerase chain reaction, and viral culture. If
specimens must be sent to a reference laboratory, nasopharyngeal swabs should be
placed in 95%–100% ethanol for shipping; alternatively, if dry ice is available, swabs
can be placed in viral transport medium (VTM), immediately deep-frozen on dry ice,
and shipped.
§ Rapid tests for a variety of influenza viruses are also available but may not be very
accurate.
§ Sputum cultures should be obtained for any cases with pneumonia and cultured –
consult WHO, SPC or CDC for assistance.
Clinical Patients with suspected pneumonia should be treated with antibiotics according to the
management of local treatment protocols. Isolate the case from others if possible.
case
Management of Secondary cases may occur in close contacts of cases. Provide information about
contacts preventing infection, symptoms and what to do if they develop symptoms.
Public Health Investigation of clusters of severe disease is recommended. WHO will also have specific
Response – outbreak investigation recommendations if there is a new influenza strain infection
Investigation, circulating. Seek advice from WHO.
Prevention & Cases should be isolated from others to avoid spreading disease. They should be educated
Control about hand hygiene, respiratory hygiene (not coughing/sneezing on others and avoiding
Immunisation is the most effective measure against seasonal influenza and pneumococcus.
§ Tuberculosis
§ SARS viruses
§ Inhaled toxins
Additional
resources
Other comments
Threshold for declaring Typhoid is endemic in Fiji. An OUTBREAK is declared if the incidence
an outbreak rate >2 standard deviations above the average for the last 5 non-outbreak
years. (See Section 1.3 on declaring alerts and outbreaks).
1. Fever (≥38oC) of unknown origin lasting 3 days or longer, and at least one of the
following: severe headache, or abdominal pain, or diarrhoea, or constipation.
OR
2. During typhoid outbreaks, anyone with fever (≥38oC) of unknown origin in an area
where there is an ongoing outbreak of typhoid, or who is in any other way linked to
an active case of typhoid fever.
OR
§ Confirmed case:
Any suspected case with a blood or stool culture positive for Salmonella Typhi.
§ Asymptomatic carrier:
Any person who sheds Salmonella Typhi in stool or urine without having symptoms.
Signs & symptoms Clinical presentations range from mild gastroenteritis and low-grade fever to severe life
threatening complications, and can be difficult to distinguish from other infections.
Most common symptoms are prolonged fever (lasting several days), severe headache,
weakness, abdominal pain, loss of appetite, nausea, and vomiting.
Less common symptoms include bradycardia, enlarged liver and/or spleen, dry cough,
rose spots (rash on the trunk), mental dullness or confusion, mild deafness, parotitis,
myocarditis, encephalitis, meningitis, chronic osteomyelitis, and suppurative arthritis.
The incidence of typhoid is Fiji is amongst the highest in the world. The majority of
cases are reported in iTaukei, but outbreaks have also occurred in the Indo-Fijian
population.
(Salmonella Paratyphi is the cause of paratyphoid, which produces a similar but milder
illness)
Mode of Ingestion of food and water contaminated by stool or urine of cases or asymptomatic
transmission carriers. For example:
§ River and streams may become contaminated by sewage during flooding and public
health emergencies, or if people upstream use it as their toilet.
§ Raw fruits and vegetables fertilised by human manure
§ Raw contaminated milk and milk products
§ Possibly kava, if prepared with unsafe water or unclean hands
§ Flies could carry bacteria from open latrines to food that was not covered
§ Food handlers who are asymptomatic carriers pose a high risk
Infection could also occur through direct contact with cases or asymptomatic carriers.
Period of Stools of typhoid patients are infectious while the person has symptoms. Up to 5% of
infectiousness infected people become carriers, who can shed bacteria in their stool for weeks or
months. People are more likely to become carriers if they were not treated with
antibiotics, or if the full course of antibiotics was not completed.
Laboratory See Typhoid Clinical Guidelines for detailed information on collection and
investigations transport of samples.
Laboratory diagnostic tests for typhoid have a low sensitivity, i.e. false-negative results.
Patients with suspected typhoid should therefore be treated with antibiotics regardless of
the results of laboratory tests.
Blood cultures: Best done in the 1st week of illness. 5-10mL of blood should be used for
1 or 2 culture bottles. Collect blood samples before starting antibiotics, and transport
Urine and stool cultures: Can be done after the 1st week of illness, but less sensitive
than blood culture. Stool samples should be processed within 2 hours of collection, or
stored and transported at 4oC. Stool culture is also used to monitor carrier status, but
often produce false-negatives because carriers only shed intermittently.
See Typhoid Clinical Guidelines for detailed description of general laboratory tests and
findings.
Clinical Untreated cases are associated with high case-fatality, up to 10-20%. Prompt treatment
management of with antibiotics can reduce this to <1%. Children <5 years old are at highest risk of
case severe complications and death.
All suspected cases should therefore be treated with antibiotics, and the entire course
should be completed even if laboratory tests are negative. Ciprofloxacin is the antibiotic
of choice in Fiji for all ages, and should be given twice daily for 5 days. Depending on
the antibiotic used, 15-20% may experience a relapse within 1 to 6 weeks. Paracetamol
should be used to manage fever in patients under 18 years of age.
See Fiji Clinical Guidelines for Typhoid for detailed information on treatment.
Management of Contacts should be advised about hand hygiene, safe drinking water, and proper food
contacts: hygiene. If an infection source is suspected, e.g. contaminated river, contacts should also
be advised to avoid contact with the source.
Contacts should be advised to seek medical care ASAP if they develop a fever or feel
unwell.
Healthy household contacts should have stool cultures (3 samples with at least 24 hours
between samples) – if positive, they should be treated with Ciprofloxacin for 28 days.
Public Health See Typhoid Clinical Guidelines for detailed information on management of
Response – typhoid outbreaks, case investigation, environmental investigation, and control
Differential § Leptospirosis
diagnoses § Dengue
§ Paratyphoid
§ Influenza
§ Meningitis
§ Many other infectious diseases
Fiji guidelines & § Fiji Guidelines for the Diagnosis, Management and Prevention of Typhoid Fever
protocols (2010)
Other comments
Zika is an emerging virus that has not yet been fully characterized. On 1 February 2016, clusters of microcephaly
cases and other neurological disorders related to Zika virus were declared a Public Health Emergency of
International Concern (PHEIC) under the International Health Regulations 2005. The most updated information
about Zika virus and related complications is available at http://www.who.int/topics/zika/en/
No. of cases required to trigger an investigation One confirmed case, if there is no known
outbreak already under investigation
Case definitions § Suspected Case definition: A person presenting with rash and/or fever ≥38oC and at
least one of the following signs or symptoms:
§ Arthralgia or
§ Arthritis or
§ Conjunctivitis (non-purulent/hyperaemic)
§ Note: Although fever may be present, most cases present with normal temperatures or
with low-grade fever <38 C.
§
§ Probable case definition: A suspected case with presence of IgM antibody against
Zika virus and an epidemiological link.
§ Presence of Zika virus RNA or antigen in serum or other samples (e.g. saliva,
tissues, urine, whole blood); or
§ IgM antibody against ZIKV positive and PRNT90 for ZIKV with titre ≥20 and
ZIKV PRNT90 titre ratio ≥ 4 compared to other flaviviruses; and exclusion of
other flaviviruses
Signs & symptoms Cases usually develop a rash (typically maculopapular), often with low-grade fever, non-
purulent conjunctivitis, headache, arthralgia, myalgia, oedema (hands and feet), and less
frequently, retro-orbital pain, anorexia, vomiting, diarrhoea and abdominal pain. Zika
virus disease is usually mild.
There have been reports of serious neurological disorders related to Zika virus outbreaks.
In the context of Zika virus circulation a number of countries have also reported an
increase in incidence in Guillain-Barré syndrome (GBS), an ascending flaccid paralysis
that can lead to respiratory failure and death. Although the link between Zika virus and
these neurological conditions has not been proven, there is mounting evidence that Zika
virus is the cause.
Sources of infection The exact nature of the reservoir of Zika virus in the Pacific has not been documented.
(reservoir) In Africa and Asia, studies have detected evidence of past infection with Zika virus in
various animals including non-human primates, zebra, elephants, water buffalo and
rodents.
Mode of Zika virus is transmitted by the bite of infected mosquitoes of the Aedes genus. They bite
transmission during the whole day, but mostly during the early morning and evening. People with
Zika infection should be cared for under bed nets so that a mosquito cannot bite them
and then carry the infection to another person. Non-mosquito transmission is possible,
including by sexual intercourse and blood transfusion.
Incubation period The exact incubation period has not been definitively determined but is likely to be
similar to other flaviruses such as dengue (2-14 days).
Period of The infectious period has not been established but is believed to be short. It is likely that
infectiousness humans are infectious to mosquitoes for up to 5 days after onset of illness. There are
number of reports of sexually transmitted Zika infection and transmission through
transfused blood products has been reported.
During 5 days after onset of illness, suspected cases should not donate blood. It is
advisable to use condoms or avoid sexual intercourse for several weeks.
Pregnant women:
§ Whose sexual partners live in or travel to areas with Zika virus outbreaks should
ensure safe sexual practices or abstain from sex for the duration of their pregnancy
Laboratory Serological tests, such as enzyme-linked immunosorbent assays (ELISA), may confirm
Practically, the current diagnostic tool for confirmation is RT-PCR to detect Zika virus
RNA in body fluids, specifically serum, saliva, and urine. In summary:
§ Serum: the standard biological sample used in most reference laboratories for
detection of Zika virus RNA
Unless serum samples are collected very early in illness course, false-negative results are
likely. Not all reference laboratories will test all biological sample types, so verify with
your specific laboratory before collection and shipment.
§ Serum can also be collected to test for Zika virus RNA or antibodies. These samples
require storage and shipping under freezing conditions and standard packing and
shipping procedure should be followed. The filter paper method (Dried Blood Spot)
may have lower sensitivity than other collection methods and is not currently
recommended for Zika virus detection.
§ Use IHR Decision Instrument (see Appendix A.3) to determine whether reporting to
WHO under the IHR 2005 is required
Clinical Treatment is symptomatic and paracetamol is the drug of choice. Avoid aspirin and
management of NSAIDs as a common differential diagnosis is dengue fever. Mild forms of exercise and
case physiotherapy are recommended in recovering persons.
Refer cases to a healthcare centre or hospital, with the ability to provide a higher level of
care, with any of the following: low urine output, hypotension, bleeding disorders,
confusion, persistent fever of more than one week’s duration, or any neurologic
symptom
Communities in the affected areas should be educated about the mosquito control
measures to be adopted in hospital premises and houses.
Management of Persons living in the area where a patient is thought to have been infected should be told
contacts: of the risk of being bitten by Zika-infected mosquitoes, and should be asked to do
mosquito control including clean-up of mosquito breeding sites (things that collect water,
such as coconut shells, tyres, cans) and provided with information about personal
protection, such as mosquito repellent sprays and bed nets.
Public Health § Single cases: focus on establishing a diagnosis and be alert for additional cases.
Response – Actively search for other cases that were in contact with the case – this should
Investigation, continue for at least 2 incubation periods (about 1 month).
Prevention & § Clusters of cases: case investigations should be started without waiting for
Control laboratory confirmation.
§ Cases should be interviewed to identify where the possible site of mosquito exposure
occurred so that control measures can be carried out to prevent further infections and
to identify further cases.
§ Preventing mosquito bites is the best way to prevent infection.
§ Dengue
§ Malaria
§ Meningitis
§ Rheumatic Fever
§ Measles
Additional A Zika application, or App, has been developed with useful up-to-date information.
resources § iOS https://itunes.apple.com/en/app/who-zikaapp/id1090088404?mt=8
§ Android https://play.google.com/store/apps/details?id=com.universaldoctor.zika
Other comments
An emerging infectious disease is one that has appeared in a population for the first time, or that may
have existed previously but is rapidly increasing in incidence or geographic range.
Recent examples include Severe Acute Respiratory Syndrome (SARS), Ebola virus disease (EVD),
Middle East respiratory syndrome coronavirus (MERS-CoV), Nipah virus, chikungunya, and Zika.
Clinical management and public health response will vary depending on the disease. For emerging
infectious diseases and pathogens, information often change rapidly as the outbreak progresses and we
learn more about disease transmission, diagnostics, clinical assessment, and management. It is
therefore important to keep up to date with information and recommendations from international public
health authorities.
A risk assessment should be undertaken to determine the level of response required. The assessment
should take into account the level of threat to Fiji and the Pacific region, including the likelihood of
importation, potential risk of local transmission, severity of clinical illness, and public health impact of
an outbreak.
Please see the WHO Emerging Diseases website for up to date information:
http://www.who.int/topics/emerging_diseases/en/
Reporting to IHR: Under the International Health Regulations (IHR 2005), any suspected disease
outbreak considered to be a potential Public Health Emergency of International Concern (PHEIC) is
required to be reported as soon as possible to the World Health Organization (WHO). The National
IHR Focal Point (NFP) is responsible for notifying the WHO. Currently the NACD is the NFP.
For assistance on what may be considered as a potential PHEIC, and mandatory timelines, for
notification, see the IHR Decision Instrument in Appendix A.3.