UC San Diego Health: Novel Coronavirus Circulated Undetected Months before First COVID-19 Cases in Wuhan, China

UC San Diego Health: Novel Coronavirus Circulated Undetected Months before First COVID-19 Cases in Wuhan, China. “Using molecular dating tools and epidemiological simulations, researchers at University of California San Diego School of Medicine, with colleagues at the University of Arizona and Illumina, Inc., estimate that the SARS-CoV-2 virus was likely circulating undetected for at most two months before the first human cases of COVID-19 were described in Wuhan, China in late-December 2019.”

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