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A new international collaborative study provides a list of the wildlife species present at the market from which SARS-CoV-2, the virus responsible for the COVID-19 pandemic, most likely arose in late 2019. The study is based on a new analysis of metatranscriptomic data released by the Chinese Center for Disease Control and Prevention (CDC).

The data come from more than 800 samples collected in and around the Huanan Seafood Wholesale market beginning on January 1, 2020, and from viral genomes reported from early COVID-19 patients. The research appears September 19 in the journal Cell.

"This paper adds another layer to the accumulating evidence that all points to the same scenario: that infected animals were introduced into the market in mid- to late November 2019, which sparked the pandemic," says co-corresponding author Kristian Andersen of Scripps Research.

"We have analyzed, in new and rigorous ways, the vitally important data that the Chinese CDC team collected," says co-corresponding author Michael Worobey of the University of Arizona. "This is an authoritative analysis of that data and how it fits in with the rest of the huge body of evidence we have about how the pandemic started."

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