That being said, this series is a new take on an old understanding of zombies. There is no virus that creates zombies, though it is called the Zombie Plague. Instead, the dead are raised by the Zombie Priest who practices black magic.
The "heroes" of the story are, according to the law, mobsters. They are also the only ones capable of keeping the zombie hordes restricted to the Zombie Priest's territory.
In this particular book, the main character, Goon, is introduced to a man who was cursed by the Zombie Priest and now lives as a man called "Buzzard" who must eat dead human flesh or go mad with hunger.