Mark DeSaulnier @RepDeSaulnier
Wearing a mask is one of the simplest, most effective ways to protect yourself & others from coronavirus. New data from @CDCgov shows tightly fitting your mask or wearing two masks substantially boosts protection. More info below on how to best #stopthespread: — PolitiTweet.org
CDC @CDCgov
In lab tests with dummies, exposure to potentially infectious aerosols decreased by about 95% when they both wore t… https://t.co/0warILn6wJ