I’m well aware of the drop in rates in those countries. What I’m saying is that other measures instituted in those countries account for most, and possibly all of the drops, not the mask wearing itself.
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And most of the countries who wear masks have *also* put in place these more dramatic distancing practices. That’s where the benefit comes from: dramatic reduction in social contacts, ie quarantine.
I have never said mask wearing does nothing. I’ve said that mask wearing is unlikely to be the main reason for reduction in disease transfer in those countries. Mask wearing is definitely not the only reason.