China CDC: Mosquitoes Still Active South of Qinling-Huaihe Line, Dengue Risk Persists

The seasonal assumption that autumn ends vector-borne disease risk is being publicly corrected by health authorities, which matters because dengue and malaria control planning in southern China has often been tied to temperature thresholds rather than actual mosquito surveillance. The practical effect falls on provincial health systems and communities south of the Qinling-Huaihe line, where continued mosquito activity extends the window in which standing water and bite prevention remain relevant. The open question is whether this messaging translates into sustained vector control beyond the traditional peak season.