A fringe theory suggests that the new coronavirus leaked by accident from a lab in Wuhan.
Researchers at the Wuhan Institute of Virology (WIV) study infectious diseases, including coronaviruses, and did before the pandemic started. So as questions about how the pandemic started continue to go unanswered, the lab has drawn scrutiny.
Matthew Pottinger, Trump's deputy national security adviser, asked intelligence agencies in January to look into the idea of a Wuhan lab leak, The New York Times reported. But CIA officers didn't find any evidence.
There's a reason for that, according to Jonna Mazet, an epidemiologist at the University of California, Davis, who has worked with and trained WIV researchers in the past.
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