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This has been asserted by so many different people, but there doesn't seem to be much scientific evidence backing it up. Why are you so sure?


There is evidence indicating it helps to prevent infection and to help prevent spreading infection.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5153448/ “The overall effectiveness of vaccination and mask wearing was 9.9% and 8.6%, respectively.”

There aren’t nearly enough masks to go around for the general population so it would be reckless to recommend people in the USA wear (commercial quality) them right now due to the need for all available supplies to go to healthcare workers.


That paper also has:

> Hand washing (1.447, 1.274–1.644) and gargling (1.319, 1.183–1.471), however, were not associated with protection. In the natural setting, hand washing and gargling showed a negative association, which may have been due to inappropriate infection control measures or aggregating infected and non-infected children to conduct those measures.

So hand washing isn't effective and masks are? That's the opposite of what we're being told for a different disease. Are you going to say we shouldn't wash our hands?


I think there are plenty of other studies showing that hand washing can make a big difference.

But I don't think that negates the whole paper. It could be that the methodology used for the hand washing data is more flawed than the mask portion.




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