B) Coinfection. Flu + COVID can make severity worse than infection with just one of these alone. There is still a lot of COVID this winter on top of a major surge of flu.
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Comments
D) Some of it could be H5N1. At the very least, H5N1 is getting closer and closer to human to human pandemic potential.
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i) There have been low flu years before, *not* followed by severe surges.
ii) The last time it was this bad (2009), there was H1N1 swine flu in the mix.
iii) Vaccination rates are not typically high, but they're down even lower (thanks, minimizers!).
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DING DING DING, we have a winner.