Had #COVID19 been infecting people in United States even before China reported 1st cases? A research by United States @CDCgov & @RedCross: in ~7,4k blood donations made in 9 US states b/w 13.12.19 & 17.01.20 the
Microbe antibodies were present in 106 samples. Smth for @WHO to look into.
https://twitter.com/A__Alimov/status/1334176666281799682