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.
In fact, modeling in the US to achieve significant drops in community spread are based on dramatic reductions in social contact, not mask wearing.
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Reducing direct community contact is being modeled using reductions from 0% to 90% of typical social contact, and the reductions in cases are dramatic as these restrictions are put in place.
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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.
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