learn to read: "Guidelines from the CDC and the WHO recommend the wearing of face masks

Guidelines from the CDC and the WHO recommend the wearing of face masks to prevent the spread of coronavirus (CoV) disease 2019 (COVID-19); however, the protective efficiency of such masks against airborne transmission of infectious severe acute respiratory syndrome CoV-2 (SARS-CoV-2) droplets/aerosols is unknown"

you have the literacy skills of a 5 yr old.

Posted By: Worzel Scrimmage, Oct 22, 19:24:28