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Six more California counties are urging residents to wear masks in indoor public settings amid concerning upticks in coronavirus cases and continued circulation of the highly contagious Delta variant.

The latest recommendations from Santa Barbara, Monterey, Napa, San Benito, Santa Cruz and Ventura raise to 17 the number of counties now asking even fully vaccinated individuals to wear face coverings as a precaution while inside places like grocery stores, movie theaters and retail outlets.

So far, only one — Los Angeles County — has gone a step further and mandated that masks be worn in such settings. The city of Pasadena, which has its own independent health department, said it would do likewise later this week.

“All community members should take action to protect themselves and others against this potentially deadly virus,” Ventura County Health Officer Dr. Robert Levin said Monday. “While vaccines remain our best tool against COVID-19, masking in indoor and crowded outdoor settings will help us curb the spread of this latest wave of infection.”

Read the full story on LATimes.com.