The story of viruses and the story of humanity have been intertwined since the dawn of history. The first small cities formed not only the cradle of civilization, but the spawning ground for the earliest viral epidemics, the first opportunity for viruses to find a home in the human herd. This is a story of fear and ignorance, as everything from demons and the wrath of the gods to minority groups have been blamed for epidemics from smallpox to yellow...