I just looked, found a whole bunch of stuff on CDC site showing RCT that demonstrates masks do work and that N95 are better than cloth.
Where's the RCT that shows they don't work? I couldn't find one.
Where's the RCT that shows they don't work? I couldn't find one.
Ones showing don’t work:
DANMASK (sars-2 community self infection)
Macintyre et al (cloth masks vs “standard practice”, showed possible deleterious effect of cloth masking but did not compare to no-mask)