CDC says many Americans can now go outside without a mask Associated PressMasked and unmasked pedestrians walk along the Las Vegas Strip, Tuesday, April 27, 2021, in Las Vegas. The Centers for Disease Control and Prevention eased its guidelines Tuesday on the wearing of masks outdoors, saying fully vaccinated Americans don't need to cover their faces anymore unless they are in a big crowd of strangers. (AP... By MIKE STOBBE AP Medical Writer NEW YORK (AP) — The Centers for Disease Control and Prevention eased its guidelines Tuesday on the wearing of masks outdoors, saying fully vaccinated Americans don’t need to cover their faces anymore unless they are in a big crowd of strangers.