KEY POINTS
  • Citing a surge in cases attributed to the highly contagious delta variant, the new mandate will take effect Tuesday.
  • The mask mandate arrives after Los Angeles County responded to climbing coronavirus case totals by reinstating its mask mandate on July 17.
A bartender takes drink orders at Oasis on July 29, 2021 in San Francisco, California.

Health officials in seven Northern California counties on Monday mandated masks be used in indoor public places, elevating a facial covering recommendation they issued in July to a requirement.

The coalition of officials — from Alameda, Contra Costa, Marin, San Francisco, San Mateo, Santa Clara and Sonoma Counties and the City of Berkeley — first advised residents to wear masks indoors regardless of their vaccination status just over two weeks ago. Citing a surge in cases attributed to the highly contagious delta variant, the new mandate will take effect Tuesday.