San Francisco has the highest COVID rate in California. Here’s what that means

San Francisco now has the highest coronavirus infection rate in California, followed closely by several other Bay Area counties where COVID-19 downward Trends have stalled as the highly transmissible BA.2 subvariant extends its dominance.


The Bay Area is reporting about 700 new cases a day across its nine counties, still reflecting its steep drop since the winter surge that saw a Peak of more than 18,000 new daily cases. But the number remains much higher than the 200 reported during last year’s summer lull before the delta variant of the virus took hold.

It’s not yet clear how big an impact on Trends and Illnesses might flow from BA.2, the omicron subvariant that federal data shows is fueling 3 out of 4 COVID cases in the western region of the United States.

San Francisco reported a 7-day average of 14 cases per 100,000 Residents as of Tuesday, according to state data analyzed by The Chronicle, marking a 56% increase in infections over the past month. By comparison, Los Angeles County reported 9 cases per 100,000 Residents and Sacramento County 6 cases per 100,000.

San Francisco was as high as 274 per 100,000 people during the winter Peak, and recorded an average of just 1.1 per 100,000 at the low point last June. State data released Tuesday showed the other Bay Area counties, along with Del Norte, clustered at the top of the state’s 58 counties in case rates.


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