KFF Health News Jul 2 2025 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 effective vaccine, and federal research cuts, they worry the disease will become endemic to a larger swath of North America. About 3,700 new dengue infections were reported last year in the contiguous United States, up from about 2,050 in 2023, according to the Centers for