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A new analysis of blood samples taken from 24000 Americans at the beginning of last year is the latest and largest study showing that the New Coronavirus appeared in the United States in December 2019 - a few weeks before the first discovery by health officials.
https://www.counton2.com/news/national-news/covid-19-was-in-us-by-christmas-2019-study-suggests/
Horseshoe bat( Rhinolophus sinicus) is a known host of SARS virus family closely related to SARS-CoV-2.
https://interestingengineering.com/did-covid-19-leak-from-a-lab-its-complicated
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