Journal of the American Medical Association has a more recent publication on this question with current results from Covid-19 data as opposed to earlier viruses

Journal of the American Medical Association has a more recent publication on this question with current results from Covid-19 data as opposed to earlier viruses[0]. Their conclusion is the same as the consensus conclusion here on HN, that masks can play a significant role in preventing the spread of Covid-19. [0] https://jamanetwork.com/journals/jama/fullarticle/2768532 https://jamanetwork.com/journals/jama/fullarticle/2768532