California health officials have issued revised guidelines for mask-wearing that recommend universal masking indoors statewide, a posture that is stricter than updated guidance from the Centers for Disease Control and Prevention (CDC). The CDC on July 27 revised its guidance on masking, citing the threat of the Delta variant, with the agency now recommending fully vaccinated people to mask up indoors in public places if they’re in areas of “substantial or high transmission.” According to the CDC, most of California falls into that category, though a handful of counties are in “moderate” and “low” categories. The California Department of Public Health (CDPH) on Wednesday announced its updated guidance, urging all Californians statewide to mask up. “To achieve universal masking in indoor public settings, we are recommending that fully vaccinated people also mask in indoor public settings across California,” the CDPH notice reads. “This adds an extra precautionary measure for all to reduce the transmission …