this post was submitted on 14 Sep 2023
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2% of all tested US blood donations given December 13-19 2019 had antibodies to and neutralized COVID, and because people don't donate blood while sick, those folks likely had and fought it off around Thanksgiving. Source:
https://academic.oup.com/cid/article/72/12/e1004/6012472
Thanksgiving isn't in December.