An analysis of donated blood suggests SARS-CoV-2 was present in the US weeks earlier than thought, NPR reports. It notes that some of these infections may have occurred before the outbreak in Wuhan, China.
An analysis of donated blood suggests SARS-CoV-2 was present in the US weeks earlier than thought, NPR reports. It notes that some of these infections may have occurred before the outbreak in Wuhan, China.
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