In 2023, there were about 250 new cases, including two acquired locally. In 2024, California saw 725 new dengue cases, including 18 acquired locally, state data shows.

“These two additional cases raise concerns about the potential for continued local spread of dengue in our community," said Dr. Muntu Davis, the Los Angeles County health officer, in a statement.

Dengue cases in the U.S. rose to 3,700 in 2024, including 105 locally acquired cases. Aedes mosquitoes now occupy 25 California counties, raising transmission risks. Federal cuts and lack of ...

As summer ushers in peak mosquito season, health and vector control officials are bracing for the possibility of another year of historic rates of dengue. And with climate change, the lack of an ...

While dengue cases were reported throughout the nation in 2024, only three states — California, Texas, and Florida — reported locally acquired infections. Other cases involved travel.