I think the problem with the after infection thing is you're up against a couple of classics. I am legend has been mentioned, but King's The stand is also in that genre and he does it very, very well... although I always think where he took it was so disappointing after the whole infection bit was done so well.
But, if it's done really really well, some people do like a nice gross out horror book. I know I do.
But, if it's done really really well, some people do like a nice gross out horror book. I know I do.