The raven / Jonathan Janz.

"All cultures share versons of the same legends: vampires, witches, werewolves, and other macbre creatures. There's a reason for this. They were all once real. When the missiles containing a terrifying virus first expoded, no one realized what was happening. But within a month, the deprogramming of human DNA became apparent. Millions of years of evolution fell away, revealing the long-forgotten genetic strands that caused people to thirst for blood, to shape-shift, to eat human flesh. To become the monsters we've always feared. Now, two years later, Dez McClane fights every day to somehow stay alive in this new, nightmarish world. He is determined to find the woman he loves amidst the hell that Earth has become. But how long can a man survive in a world full of monsters?" -- inside front cover