Some flawed "research" suggesting masks don't work circulated last week. This new STUDY tells the truth:
1. #COVID19 and other respiratory pathogens have airborne transmission.
2. Masks are, if correctly and consistently worn, effective in reducing transmission of respiratory diseases and show a dose-response effect.
3. Respirators are significantly more effective than medical or cloth masks.
4. Mask mandates are effective in reducing community transmission.
Duh!

https://journals.asm.org/doi/10.1128/cmr.00124-23