The first paper analyzed the geographic pattern of Covid cases in the outbreak's first month, December 2019, showing the first cases were tightly clustered around the Huanan Market. The second examined genomic data from the earliest cases to study the virus' early evolution, concluding it was unlikely the coronavirus circulated widely in humans prior to November 2019.source https://timesofindia.indiatimes.com/world/us/pair-of-new-studies-point-to-natural-covid-origin/articleshow/93150162.cms
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