The Trump administration has advanced the theory the coronavirus began as a lab accident, amid U.S. intelligence investigations, but scientists who research bat-borne coronaviruses disagree.
Speaking with NPR, ten virologists and epidemiologists say the far more likely culprit is zoonotic spillover — transmission of the virus between animals and humans in nature.
Geoff Brumfiel, NPR senior science editor and correspondent, and Short Wave reporter Emily Kwong explain how bat coronavirus research works, what zoonotic spillover is, and why some scientists worry the lab theory could undermine the kind of scientific cooperation needed to get a grip on this pandemic.
Read more of Geoff and Emily’s reporting here. And listen to our episode on bats and virus hunters here.
This episode was produced by Abby Wendle, edited by Viet Le and fact-checked by Emily Vaughn.
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