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I'm not who you addressed your question to, but I'll offer my understanding anyway.The N95 etc are apparently effective to some degree. The cloth masks were not. Am i wrong?
Cloth masks work to an extent against droplets, as one would expect. If someone standing near you sneezed, and you were wearing a cloth mask, you would certainly appreciate any degree to which the cloth took the hit rather than your face. Same with surgical masks, though they are better since they are a tighter weave, so would catch more than regular cloth would.
N95s would catch all droplets, plus, on average, 95% of airborne virus molecules (hence the 95 in the name).
But to your point, I don't recall Fauci ever discouraging folks from wearing cloth masks -- am I misremembering?
What I recall is that during the n95 shortage was when the campaigns appeared with fabric patterns, for folks to make their own cloth masks.
Only later did it become apparent how much better the n95s were, because covid is airborne, not always in droplets. I mean, the opening in the weave of cloth is much larger than the covid molecule, so lots of them could go right through the mask.
But they weren't zero usefulness -- some percentage of the virus would still be caught up by a cloth mask, just by luck or because some molecules took the form of droplets big enough to be caught by the fabric. If that's all that was available, they were definitely worth wearing, as opposed to bare face. But not 95% effective like the n95s.
Again MOO