https://www.mercurynews.com/2021/04/27/new-cdc-mask-guidance-vaccinated-people-dont-need-face-coverings-in-most-outdoor-settings/

State officials are poised to loosen California’s mask mandate after the Centers for Disease Control issued new guidance Tuesday saying those who have been fully vaccinated against COVID-19 can safely take part in most outdoor activities without a face covering.

The new guidance marks a dramatic shift in how federal health officials, who have long insisted that everyone wear a mask any time they are within six feet of others outdoors, are advising the public to protect itself now that more than half of American adults have received at least one vaccine dose. But it could make it harder for business owners to figure out who needs to don a mask and who doesn’t.