Yes, it was too early for North America based on gene sequencing. The very first case in China could have been in that time frame, but only barely.
Yes, it was too early for North America based on gene sequencing. The very first case in China could have been in that time frame, but only barely.
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With the huge amount of travel between China and the US, especially Wuhan, since that place is both a major air/transport/shipping hub *and* a major industrial center with a solid crap ton of product formerly owned by America, there’s very nearly zero chance the virus didn’t show up here within days of it hitting there.