RT @HuffmanLabDU
Nice mask study ~consistent w/ prev. results.
https://www.pnas.org/content/118/49/e2110117118

"... face masks sign. reduce the risk of SARS-CoV-2 infection compared to social distancing. We find a very low risk of inf. when everyone wears a face mask, even if it doesn’t fit perfectly on the face." 1/🧵