COVID-19 is caused by a virus called SARS-CoV-2. The disease is unique and mysterious even to scientists who have been studying coronaviruses for years, and the origins of the pandemic are still being debated. Did it really jump from animal to human at a Wuhan wet market? Or did it start another way? Dr. Susan Weiss, Professor of Microbiology at the Perelman School of Medicine at the University of Pennsylvania joins the podcast to break down her research on coronaviruses. See omnystudio.com/policies/listener for privacy information.

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