The Enemy by: Charlie Higson
This is the story of groups of kids throughout London that try and survive a disease outbreak that has turned every human 16 or older into a decaying puss ball. I really love this book because I love action and adventure and this book has a lot of survival situations and kids trying to find there friends and siblings through out London.
In this book two groups of kids in two different supermarkets are told that at Buckingham Palace there is plenty of food and safety. They travel and have to fight their way through the horrors of London's now diseased city.