Started out four stars and worked its way down. The plausibility of the characters' actions (and CDC in particular) strained suspension of disbelief. 
 Made me interested in checking out the TV show, though, where I think it would feel less jarring. I guess I'm used to TV sacrificing plausibility for an entertaining scene. 
 Also, does not really work as a standalone novel. Definitely feels like the part 1 of 3 that it is.