City of the Dead

Mack thought he was alone wandering a city he once called home. Corpses littered the streets. Everyone but him had succumbed to the deadliness of the virus. Scientists and Mankind's vanity caused it. Everyone was dead. His wife and son included. Months had passed since that fateful day. Now the dead are waking. And they're starving. Trapped in the building where the virus originated, Mack has one chance to discover the truth.
What he discovers instead, is a child.