“When people wear masks that are made of cloth and don’t have any kind of a rated insert… not really doing anybody any good,” said UCI epidemiologist Dr. Andrew Noymer. “This is a great idea. Right now NIOSH (the National Institute of Occupational Safety and Health) basically has the N95 rating, which is the best kind of mask, and everything else is just a mask.” The CDC is looking at creating two labels, one for masks that filter 50% of droplets and one for masks that filter 80% of droplets.
Evaluating pandemic protections: CDC to start rating effectiveness of face coverings
KCBS, Dec. 16, 2020 (Video)
December 16, 2020