I love this book! I bought the kindle edition on Amazon and loved it to bits! It's hands-down one of my favorite zombie books out there, on the same page as The Enemy series by Charlie Higson. My only complaint was the loooong paragraphs, but other than that, it was nearly perfect.
I guess one of the best things about this book is the awesome character development. I started out really irritated at the main heroine, but after a while, she really grew on me and just found myself cheering for her and Heath till the very end, hoping that they will be able to get out alive. It's very rarely that I find myself attached to fictional characters, but this book just did that and did it splendidly. It was a long read, but I sure hoped it was longer!