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PBS News Hour
Why the US is re-investigating the COVID 'lab leak' theory
Where did COVID-19 come from? In the midst of renewed questions about the novel coronavirus' origins, President Joe Biden has directed U.S. intelligence to determine if the virus jumped from animals to humans, or somehow escaped from a lab in Wuhan, China. Amna Nawaz and Nick Schifrin explore the possibilities and report what we know so far.
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