U.S. San Francisco Bay Area brings back indoor mask mandate
SAN FRANCISCO, Aug. 3 (Xinhua) -- Starting from Tuesday, U.S. San Francisco Bay Area residents are once again required to wear masks for all in public indoor settings, regardless of vaccination status, to help stem transmission of the highly contagious Delta variant of the coronavirus.
Health officers for seven of the nine counties in the region -- Alameda, Contra Costa, Marin, San Francisco, San Mateo, Santa Clara, Sonoma, and the city of Berkeley announced the restriction on Monday.