According to the California Department of Public Health (CDPH), most dengue cases reported in California involve people infected while traveling abroad. As of early November 2024, CDPH reported a total of 344 dengue cases this year.
However, the mosquitoes that spread dengue (Aedes aegypti and Aedes albopictus) are found in California, especially in So-Cal, where 15 local dengue cases have been reported this year.
As of November 10, 2024, the San Bernardino County Public Health Department reported a locally acquired dengue case in the city of San Bernardino.
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