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Showing posts with label Ticks. Show all posts
Showing posts with label Ticks. Show all posts

Monday, July 30, 2012

Those Pesky Tick’s


(Google Image) 

By Diane Forrest, RN

Every year around the holidays my mom always cooks a big spread of food.  After we eat she will exclaim, "I’m full as a tick!!"  Well after seeing a picture of what a full tick looks like, I know what she means.
(Google Image) 
Some people think ticks are insects, but they are actually arachnoids, like spiders and scorpions.  They will attach themselves to a host, and begin feeding.  It may take an hour to finish a meal, so during this time they will excrete an enzyme to prevent blood from clotting.  Once they have finished eating, they will simply fall off, but what is left behind is a bite that could become infected, and produce serious problems.
(Google Image) 
A tick's bite can result in many different diseases, such as Rocky Mountain Spotted Fever, Lyme disease, Q Fever,  African tick bite fever, tularemia, tick-borne relapsing fever, babesiosis, ehrlichiosis, Tick paralysis and tick-borne meningoencephalitis, as well as bovine anaplasmosis.
(Google Image) 
Some of the symptoms experienced after a tick bite include:
  • Itching, burning, redness, and rarely, localized intense pain (some soft tick bites) in some individuals. A few individuals may be sensitive or allergic to tick bites (tick saliva secretions) and develop rash, shortness of breath, swelling, numbness, or paralysis. However, the majority of individuals with tick bites develop no symptoms, and many do not remember getting bitten.
  • Some immediate symptoms that infrequently or rarely develop during or immediately after a tick bite may be fever, shortness of breath, weakness, vomiting, swelling, weakness or paralysis, headache, confusion, or palpitations. Individuals with these symptoms should be seen immediately by a doctor.
  • If you see a tick on your body, the first thing you need to do is remove it with some tweezers.  Make sure to pull upward in a single motion, and check to make sure there are no parts remaining attached to you.  I have also heard that painting them with clear fingernail polish will cause them to release themselves from your skin, however this is not recommended as it may cause the tick to release more pathogens into your body.

(Google Image) 
To prevent getting bitten by ticks:
  • Avoid grassy areas and shrubs where ticks populations may be high and where they reside, waiting to grab a ride on a potential host.
  • Wear light-colored clothing so ticks can be easily seen, and brush them off.
  • Tuck pants into boots or socks to avoid ticks crawling up loose pant legs.
  • Apply insect repellant and use the brands designed to repel ticks. Follow label instructions. Avoid use of DEET-containing repellents on children. Carefully follow instructions and apply some repellents directly to skin and others to clothing. DEET-containing repellents with concentrations of 15% or less may be suitable for children. These should be carefully applied strictly following label directions. Repellents containing permethrins may be applied to clothing but not to skin. In areas that have a high tick population, DEET-containing repellents may need to be reapplied more frequently than for repelling mosquitoes. Follow the package label instructions carefully.


Promptly check yourself, others, and pets if exposed to areas where ticks are likely to be located.
(Google Image) 
Most tick bites do not produce pathogens, but it’s better to be safe than sorry, take measures to prevent the bite from occurring, and remove the tick if it attaches itself to you.  Keep the area clean and monitor for any symptoms that were mentioned above, and have a safe summer.

Sunday, July 31, 2011

Ticks Overview


Ticks are the leading carriers (vectors) of diseases to humans in the United States, second only to mosquitoes worldwide. It is not the tick bite but the toxins, secretions, or organisms in the tick's saliva transmitted through the bite that causes disease.

The following is a list of tick-borne diseases, the usual tick vector(s), and the pathogen(s) the tick transmits:
  • Lyme disease (borreliosis) -- Ixodes species including deer ticks (hard ticks) -- vectors for Borrelia species of bacteria (a spirochete or spiral-shaped bacterium)
  • Babesiosis -- Ixodes species (hard ticks) -- vectors for Babesia, a protozoan
  • Ehrlichiosis -- Amblyomma americanum or lone star ticks (hard ticks) -- vectors for Ehrlichia chaffeensis and Ehrlichia ewingii bacterial species
  • Rocky Mountain spotted fever -- Dermacentor variabilis (American dog tick) and Rocky Mountain wood tick (Dermacentor andersoni) (hard tick) are the primary vectors and occasionally the brown dog tick (Rhipicephalus sanguineus); Amblyomma cajennense (hard tick) is the vector in countries south of the United States -- vectors for Rickettsia bacteria
  • Southern tick-associated rash illness (STARI) -- Amblyomma americanum or lone star tick (hard tick) -- infectious agent not yet identified according to U.S. Centers for Disease Control and Prevention (CDC)
  • Tick-borne relapsing fever -- Ornithodoros moubata or African tick (soft tick) -- vectors for Borrelia species of bacteria
  • Tularemia -- Dermacentor variabilis (American dog tick) (hard tick) and Amblyomma americanum or lone star tick (hard tick) -- vectors for Francisella tularensis bacteria
  • Anaplasmosis (human granulocytic anaplasmosis or HGA) -- Ixodes species (hard tick) -- vectors for Anaplasma phagocytophilum bacteria
  • Colorado tick fever -- Dermacentor andersoni (hard tick) -- vectors for Coltivirus, a RNA virus
  • Powassan encephalitis -- Ixodes species and Dermacentor andersoni (both hard ticks) -- vectors for Powassan encephalitis virus, an RNA arbovirus
  • Q fever -- Rhipicephalus sanguineus, Dermacentor andersoni, and Amblyomma americanum (all three are hard ticks) -- vectors for Coxiella burnetii, a bacterium


Outbreaks of tick-related illnesses follow seasonal patterns (about April to September in the U.S.) as ticks evolve from larvae to adults. Different ticks go through complex life cycles that involve mating and larval formation and usually have several hosts; humans are usually not an essential part of the normal tick life cycle, but wherever a mammalian host is pictured in a tick life cycle, usually a human can replace the normal host animal. For example people could replace the deer or cow. However, in most cases, the life cycle is not completed with human hosts.

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