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New evidence tracks COVID's origin to Wuhan market
6m 35s
From the start of the pandemic, scientists have tried to determine exactly where and how the novel coronavirus spread to humans. New studies conclude the virus first emerged from a live-animal market in Wuhan, China. One of the authors of a study, Angela Rasmussen, a virologist at University of Saskatchewan's Vaccine and Infectious Disease Organization, joins William Brangham to discuss.