@mjb302 perhaps comment?
RT @EricTopol: The body of evidence for the protective benefit of masks, updated with multiple new studies, for community and health care settings
https://www.acpjournals.org/doi/10.7326/L22-0272 @AnnalsofIM

🐦🔗: https://nitter.eu/NChildersMEP/status/1552004175118098438