The new COVID-19 subvariants FLiRT, including KP.3, KP.2, and KP.1.1, are driving a resurgence in California, with 62.9% of national specimens. They are more contagious than the winter's JN.1 subvariant.
California, along with 14 other states, has high or very high coronavirus levels in sewage. Wastewater viral activity in California sharply increased since early May, contrasting with the national trend.
Santa Clara County, particularly Silicon Valley, has high coronavirus levels in wastewater. Los Angeles County's levels have stabilized after a previous rise.
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