According to the researchers, the new coronavirus experienced two sudden population expansions, including one on January 6, 2020, which was related to the Chinese New Years Day holiday.
An earlier expansion occurred on December 8, implying human-to-human transmission may have started in early December or late November, and then accelerated when it reached the Huanan seafood market.
When was that massive group dinner they had? Was that for the new year?
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