World war Z

My dad got me a book the other day called World war Z. I've already read 18 pages and its really good. My dad said it got excellent reviews. Well its about zombies. I read this part where there were these three infected patients at a hospital and they were infected with the zombie disease. One guy explained what happened to him. He said that there was this 12 year old boy in an old abandoned house and he was very vicious and crazy. He bit the got was this brown gross stuff. So ya the book is crazy.