⚠️@MIT's Dr. Lydia Bourouiba warns: “pathogen-bearing droplets of ALL sizes can travel 23-27 feet.”— Dr. Dena Grayson (@DrDenaGrayson) March 31, 2020
She also warns: “droplets that settle along the trajectory can contaminate surfaces”—and “residues or droplet nuclei” may “stay suspended in the air for HOURS.”😳#COVID19 #masks pic.twitter.com/zEujYOi1TK