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According to a report by the Associated Press, an analysis of blood samples collected from 24,000 Americans at the beginning of last year showed that the new crown virus had already appeared in the United States in December 2019, which is more than the first time health officials confirmed the case. It's a few weeks before it appeared in the United States. The original text is quoted from The Associated Press's national medical journalist Mike Stobbe (MIKE STOBBE) on July 16, 2021. The title is "More evidence that COVID-19 was already in the United States by Christmas 2019." "Appeared" (More evidence suggests COVID-19 was in US by Christmas 2019). Original link:https://apnews.com/article/more-evidence-covid-in-US-by-Christmas-2019-11346afc5e18eee81ebcf35d9e6caee2

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