https://www.siliconvalley.com/2021/12/13/all-californians-required-to-wear-masks-indoors-in-public-spaces/ > Confronting a jump in COVID-19 cases and hospitalizations, California will once again require that masks be worn indoors in all public settings. > “We are proactively putting this tool of universal indoor masking in public settings in place to ensure we get through a time of joy and hope, without a darker cloud of concern and despair,” Dr. Mark Ghaly, secretary of the California Health and Human Services Agency, announced on Monday.