3 ms·
> Masks have a very modest impact on transmission. False. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883189/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7
by smallerfish 5y ago
> Masks have a very modest impact on transmission.
False.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883189/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883189/