Earlier quoted context omitted.
> https://www.acpjournals.org/doi/10.7326/M20-6817 from the results itself : Although the difference observed was not statistically significant, the 95% CIs are compatible with a 46% reduction to a 23% increase in infection and from the conclusion : The recommendation to wear surgical masks to supplement other public health measures did not reduce the SARS-CoV-2 infection rate among wearers by more than 50% in a comm…
> from the results itself : Again, taken from the "Limitations" section: "no assessment of whether masks could decrease disease transmission from mask wearers to others." I never said that masks greatly help protect the individual, I said they help slow the spread of the pandemic. > She is a medical professional Any chance you could link me to here credentials then? Has she authored any peer reviewed papers? Actually…
"Nevertheless, the overall 3.4 fold reduction in aerosol copy numbers we observed combined with a nearly complete elimination of large droplet spray demonstrated by Johnson et al. suggests that surgical masks worn by infected persons could have a clinically significant impact on transmission"
[0] https://pubmed.ncbi.nlm.nih.gov/23505369/
Edit: article -> paper