The Drifter
"The drifter: Unlike the 99.9% of the adult population, Joshua Ragland, survived the Pyongyang flu and by some miracle lived to see the invaders pushed west by a retaliatory strike. Ten years on, he drifts through the eastern states avoiding people and the trouble they always bring. When he intervenes to save the life of a young girl captured by a pack of cannibals, he unwittingly sets in motion a chain of events that will bring more than just trouble, it'll bring a whole damn army of evil down upon his head..."--Back cover.