How we know that masks, even the cloth ones, reduce the spread of COVID-19
The evidence for masks comes from animal studies, lab simulations, and real-world observation.
Engineers studied various mask types on a mannequin, simulating a cough with a pump that sprayed a mixture of water and gelatin. Some droplets escaped through this mask made from a folded handkerchief, traveling an average of 15 inches.Read moreFLORIDA ATLANTIC UNIVERSITY
