Double-Masking Offers More Protection Against COVID-19, CDC Says

WASHINGTON (WJZ) — New guidelines this week from the Centers for Disease Control and Prevention confirm double-masking — wearing two face coverings — is much safer.
Johns Hopkins epidemiologist Dr. Caitlin Rivers discussed the guidance Thursday and says two things matter for performance, filtration and fit.
“That means adding a second layer can be helpful for filtration,” Dr. Rivers said. “And making sure the mask is snug around your mouth or improving the fit