The exact cause for flu seasonality is debated. Re: covid, we have a very plausible (not proven) explanation: colder temps everywhere in N. Hemisphere means longer ex vivo viral survival and more indoor gatherings. What's left to explain?
overdetermined => using the list of all plausible mechanisms in replies I believe we have managed to explain 2948% of the variation in infections over time
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Oh yea, I agree. This just feels like standard situation in population health. Plenty of explanations, but few RTCs so we can't separate them. Not much to say.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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