Just read this.
It's a decent read, nothing too new on the zombie genre but then it's hard to actually find something new I suppose considering everythings been done before, especially with regards to zombies.
A lot of good action imagery, sometimes the writing needs to be "tightened" a little. Hard to explain if you're interested/use this site I'd be happy to provide an example.
Characters were all good, however it would have been nice to have a bit more of a description other than just 20s or 40s. But for the main characters there was enough so I suppose it works out.
Got to say, I lost interest after DeShawn died, not because he was such an amazing character or anything so to speak - but I like it in a piece when a few of the co-stars make it out too, his death was just predictable that's all he coulda been saved!