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Here is the scholarly article. They had blood samples that predated the first known COVID-19 case in the U.S. The samples tested positive for COVID-19 antibodies. It's been here longer than previously thought.
Remember when vaping caused a strange pulmonary disease in the U.S?
Remember when vaping caused a strange pulmonary disease in the U.S?
Serologic Testing of US Blood Donations to Identify Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)–Reactive Antibodies: December 2019–January 2020
Retrospective SARS-CoV-2 serological testing of routine blood donations collected in 9 US states from 13 December 2019–17 January 2020 suggests that the virus w
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