Surgeons wear masks to prevent the spread of bacteria, which are much larger than viruses.
Viruses are too small to be effectively stopped by masks.
(PDF) Masks Don’t Work: A review of science relevant to COVID-19 social policy
Surgeons wear masks to prevent the spread of bacteria, which are much larger than viruses.
Viruses are too small to be effectively stopped by masks.
(PDF) Masks Don’t Work: A review of science relevant to COVID-19 social policy