2/ LARGE Cochrane Rev (just published 1/30/23) of RCT data ALSO CONFIRMS NO BENEFIT of N95 masks vs. med/surg masks, in either community (n~8K) or HCW (n~8K) settings for prevention of flu-like illness or lab confirmed flu https://t.co/N4TkgI4uUR pic.twitter.com/0DCdYAPo7x

— Andrew Bostom, MD, MS (@andrewbostom) January 31, 2023