Vol. 4 No. 1 Suppl. 1 (2020) - Open Stream on Covid-19 Emergency
Covid-19 Emergency Open Stream Contribution

From Spillover to Pandemic

David Quammen

Published 2020-05-11


  • Coronaviruses,
  • Pathogens,
  • Human Health,
  • Zoonotic Diseases,
  • Covid-19

How to Cite

Quammen, D. (2020). From Spillover to Pandemic. Substantia, 4(1), 930. https://doi.org/10.13128/Substantia-930


This excerpt, published in 2012 in the American edition of the book Spillover, came after 500 pages in which I described the phenomenon of zoonotic diseases (those caused by viruses and other pathogens passed from nonhuman animals to humans), the importance of those diseases amid the problems of global human health, the work of the scientists who study such diseases, and the danger that a virus newly emerged from an animal host could cause a terrible pandemic. Immediately preceding this section, I had recounted my visit with Dr. Robert Webster, one of the world’s leading influenza researchers, who worried that a highly pathogenic form of avian influenza, known as H5N1, might evolve the capacity to transmit human-to-human. “And then God help us,” he said. Another senior authority, as you’ll see below, warned me especially about the coronaviruses. And now here we are.