The official CDC timeline says the first known cases worldwide were in Wuhan, 12/12/19, and the first lab-confirmed U.S. case was 1/20/20. Fine, that much we've always heard.
Sometime in 2020, there were a few questions about this, because supposedly some blood samples from late 2019 here in the U.S. showed signs of Covid exposure, which would mean it was here but unrecognized months earlier.
Has anyone heard anything further on that?
Sometime in 2020, there were a few questions about this, because supposedly some blood samples from late 2019 here in the U.S. showed signs of Covid exposure, which would mean it was here but unrecognized months earlier.
Has anyone heard anything further on that?
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