"Overall, masks produced a 3.4 fold (95% CI 1.8 to 6.3) reduction in viral aerosol shedding."
Read that again. Mor… https://twitter.com/i/web/status/1241287149938507777
"Overall, masks produced a 3.4 fold (95% CI 1.8 to 6.3) reduction in viral aerosol shedding."
Read that again. Mor… https://twitter.com/i/web/status/1241287149938507777