I had high hopes for this movie when I saw the trailer and felt that the movie delivered what it intended to.
The movie itself takes place from the point of view from a cameraman named Scott. The cameraman is shooting a take on what firemen go through on an ordinary day when their ordinary day turns into extraordinary. They get a call to an apartment complex and get locked inside with what appear to be zombie like creatures.
It is a movie that I would place in between the 28 days/weeks movies and Cloverfield. It has suspense (will be great on DVD w/surround sound in the future) but some of the characters lack common sense. The fact that the movie is shot from one camera had some people disappointed since it didn't involve too much of a story as to what is being "quarantined", but that is to be expected.
I would say that the movie could have been a heck of a lot better with a solid story and a bigger climax/plot. It is worth your time to watch, but if you don't like shaky cameras like Cloverfield and Blairwitch Project, then I wouldn't watch it.