LOS ANGELES—One month after California fully reopened for business, many of the state’s most populous counties are putting their masks back on.
Seven counties in the Bay Area issued recommendations that residents wear masks indoors, even if they are fully vaccinated, citing rising Covid-19 infections and the rapid spread of the Delta variant. Two Northern California counties—Sacramento County and neighboring Yolo County—took the same step earlier this week. Los Angeles County on Thursday made masks a requirement in most indoor public spaces starting late Saturday.
The Southern Nevada Health District issued a similar recommendation Friday for crowded indoor public spaces, including casinos and grocery stores.
In a joint statement Friday, the seven Bay Area counties—San Francisco, Alameda, Contra Costa, Marin, San Mateo, Santa Clara and Sonoma, plus the city of Berkeley—said the explosive growth of the Delta variant across the state and the country made masks necessary again.
The Delta variant, which was first detected in India late last year, is estimated to be at least 50% more transmissible than the Alpha variant, or B.1.1.7, which had been dominant in the U.S. since March.
Source: WSJ – US News