California Faces Rising COVID Cases: Officials Urge Masking in Indoor Spaces

A new surge of COVID-19 is currently affecting California, with the state experiencing an increase in confirmed cases and hospitalizations. Health officials are warning residents to exercise caution and consider wearing masks, particularly in indoor public environments, until the transmission rates decline. The surge is confirmed by high levels of coronavirus in wastewater, which the CDC classifies as "high" across many parts of the state, including Los Angeles, the San Francisco Bay Area, and Sacramento.

The rise in COVID activity is evidenced by the positive test rate, which has climbed from 6% in late July to over 12% by late August across California. Counties such as Los Angeles, Orange, and San Francisco are seeing significant increases in positive test percentages, indicating escalating community spread.

Meanwhile, hospital data shows a modest uptick in COVID-related admissions, though the numbers remain relatively low compared to previous peaks. Emergency room visits for COVID-like illnesses are also on the rise in several counties.

Health experts, including Dr. Aimee Sisson of Yolo County, emphasize the importance of wearing high-quality masks such as N95, KN95, or KF94 devices for better protection. Given the high wastewater viral loads in areas like Sacramento and West Sacramento, officials recommend masking indoors for all individuals aged 2 and up, especially those at greater risk due to age or health conditions.

The growing COVID activity is a reminder that summer waves of the virus are unpredictable, and preventive measures remain vital. The updated COVID-19 vaccines are expected to be available soon at major pharmacies, though some new guidelines discussing vaccination procedures have sparked debate. Overall, public health advocates stress that vaccination and wearing effective masks are our best tools to reduce severe illness and avoid overwhelming healthcare systems.

Source: https://medicalxpress.com/news/2025-09-covid-california-health-urge-residents.html