3 ms·

Surgical masks do not filter the virus. Here's one paper: https://annals.org/aim/fullarticle/2764367/effectiveness-surgical-cotton-masks-blocking-sars-cov-2-con

• abacadaba 7y ago
  From the paper: "The mask's aerodynamic features may explain this finding. A turbulent jet due to air leakage around the mask edge could contaminate the outer surface." Agreed that calling it an n95 equivalent without any evidence might be a stretch though. And yes other papers looked at it with a seal. Still would be interesting to see a surgical vs. sealed surgical comparison.