Los Angeles Times

California faces a high-risk summer as ultra-infectious COVID subvariants keep coming

LOS ANGELES — California’s summer is being complicated by a dizzying array of omicron subvariants that have emerged over the last several months. The most dominant nationwide is BA.5, which officials say is not only highly contagious, but has increased the risk of coronavirus reinfection — perhaps just weeks after an earlier case. According to federal estimates, BA.5 comprised 65% of the ...
Three men wear masks while walking through Union Station in downtown Los Angeles on Tuesday, July 12, 2022.

LOS ANGELES — California’s summer is being complicated by a dizzying array of omicron subvariants that have emerged over the last several months.

The most dominant nationwide is BA.5, which officials say is not only highly contagious, but has increased the risk of coronavirus reinfection — perhaps just weeks after an earlier case.

According to federal estimates, BA.5 comprised 65% of the nation’s coronavirus cases over the weeklong period ending Saturday, an astonishing climb from a month ago, when it made up 17% of cases.

Among the impacts of the subvariant:

— Transmission levels have been consistently high across virtually all California counties.

— Los Angeles County is experiencing a renewed increase in cases, now up 14% week over week — ending a short period of relative stability following the Fourth of July that, in hindsight, likely was related to delays in reporting and reduced testing over the holiday.

— L.A. County has averaged about 5,900 coronavirus cases a day over the last week, its highest rate since early

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