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COVID Notes #10

January 25, 2022 11:10 a.m.

THIS IS ONE OF the most interesting Twitter threads I’ve read in some time. I’m sure it’s gotten lots of discussion in specialist circles. But it hasn’t been much a part of the general news coverage of COVID. Basically new strains of the flu tend to evolve from recent dominant strains. So people build up an immunity to the Flu A that was big last year and Flu A evolves into Flu B that might get a lot of people sick two or three years in the future. But COVID isn’t working that way, at least not so far. Omicron didn’t evolve from Delta. And Delta didn’t evolve from the Alpha, Beta or Gamma lineages, says Adam Kucharski.

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