Annals Of Internal Medicine (Danish Study)
“Our results suggest that the recommendation to wear a surgical mask when outside the home among others did not reduce, at conventional levels of statistical significance, the incidence of SARS-CoV-2 infection in mask wearers in a setting where social distancing and other public health measures were in effect, mask recommendations were not among those measures, and community use of masks was uncommon.”
This is one of the largest RCT of its kind and confirms the body of work found on this site. AIM deserves a lot of credit for publishing this study given the unnecessary contentiousness of the subject.