Wednesday, December 15, 2021
Florida has confirmed more than 40 locally acquired dengue cases in 2026, most in Hillsborough County, and health departments in several counties have issued mosquito-borne illness alerts urging repellent use and removal of standing water.
Florida is contending with a growing cluster of locally acquired dengue, and several county health departments have issued mosquito-borne illness alerts as the case count climbs. State arbovirus surveillance had logged more than 40 locally transmitted dengue infections for 2026 as of early September, alongside roughly 110 travel-associated cases, a reminder that this is a disease people carry home as well as catch at home.
The local cases are concentrated on the Gulf Coast and in South Florida. Hillsborough County, in the Tampa area, accounts for the largest share with about 30 confirmed local infections, followed by Miami-Dade, Pinellas, Palm Beach, and a newly confirmed case in Orange County. Those totals are as of the latest surveillance week and are expected to rise while the weather stays warm and wet. Local mosquito control districts have stepped up targeted spraying against the Aedes aegypti mosquito that carries the virus.
Dengue earns its old nickname, breakbone fever, from the deep muscle and joint pain that arrives with high fever, severe headache, and rash. Most people recover at home with rest and fluids, but a smaller number progress to severe dengue, which is a medical emergency. Warning signs that call for immediate care include intense belly pain, repeated vomiting, bleeding from the gums or nose, and sudden weakness. There is no specific antiviral treatment, so avoiding bites in the first place is the whole game.
The mosquito behind local dengue breeds in the small containers around a yard, not the swamp down the road. A bottle cap of water is enough. Walk your property and dump anything holding water, from plant saucers and buckets to tarps, clogged gutters, and toys, then keep it dumped, since these mosquitoes bite during the day. Use an EPA-registered repellent, put screens between you and them, and see our guide to mosquito prevention for the full playbook on bite protection.
For a prepared household in the Southeast, dengue is a seasonal reminder that biological threats are not all imported or exotic. Keep repellent in the kit, make the standing-water walk a weekly habit through mosquito season, and learn the warning signs that turn a miserable week into an emergency room visit.
