A Minimum of 320,000 Mammalian Viruses Await Discovery

A Minimum of 320,000 Mammalian Viruses Await Discovery | Surprising Science: "It’s the stuff of The Hot Zone, Outbreak and Contagion: a deadly new virus has emerged from some dark corner of the jungle. While victims succumb to a horrendous death and drop like poisoned flies, virus hunters race to identify patient zero, who turns out to have recently spent time on a pig farm. Those pigs, they discover, are exposed to fruit bat droppings, which rain down from the trees above. Another animal virus made the jump to humans. And while you probably know that such jumps have happened before, brace yourself: Scientists estimate that at least 320,000 such viruses await discovery."