Spillover: Animal Infections and the Next Human Pandemic

by David Quammen

Diseases of the future, needless to say, are a matter of high concern to public health officials and scientists. There’s no reason to assume that AIDS will stand unique, in our time, as the only such global disaster caused by a strange microbe emerging from some other animal. Some knowledgeable and gloomy prognosticators even speak of the Next Big One as an inevitability. (If you’re a seismologist in California, the Next Big One is an earthquake that drops San Francisco into the sea, but in this realm of discourse it’s a vastly lethal pandemic.) Will the Next Big One be caused by a virus? Will the Next Big One come out of a rainforest or a market in southern China? Will the Next Big One kill 30 or 40 million people? The concept by now is so codified, in fact, that we could think of it as the NBO. The chief difference between HIV-1 and the NBO may turn out to be that HIV-1 does its killing so slowly. Most other new viruses work fast.