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Bitcoin Ethereum News Topline Researchers, including scientists from the Centers for Disease Control and Prevention (CDC) and the American Red Cross, have found evidence that Covid-19 was present in the U.S. in December 2019, weeks earlier than previously thought and before even the first cases in Wuhan, China, had been publicly identified. Scientists believe Covid-19 may have been present in the U.S. weeks before its first recorded case. getty Key Facts Findings from the study, which tested stored blood samples from between December 2019 and January 2020 for Covid-19 antibodies and were published in the journal Clinical Infectious Diseases ,...
