The Centers for Disease Control and Prevention now says everyone "should wear a cloth face cover when they have to go out in public, for example to the grocery store or to pick up other necessities." "Cloth face coverings are meant to protect other people in case the wearer is unknowingly infected but does not have symptoms," the CDC said. But the benefits go both ways. "We know now there's scientific evidence that masks both keep you from infecting others but may also partially protect you from getting infected," said Dr. Deborah Birx, the White House coronavirus task force coordinator. "I think that's a new discovery and a new finding." If 95% of Americans wore face masks in public, it could prevent 33,000 deaths by October 1, according to the University of Washington's Institute for Health Metrics and Evaluation.