Florida Dengue Outbreak Raises Risk Near Tampa
More than 250 locally acquired cases have been reported statewide in 2026, mostly in Hillsborough County.

Florida is experiencing a significant dengue fever outbreak, with the greatest concentration around Tampa. State health officials have recorded more than 250 locally acquired cases so far this year. Hillsborough County and nearby areas are under a local emergency declaration, while crews are treating mosquitoes around the clock. The outbreak may be the largest seen in the continental United States in several decades.
Dengue comes from infected mosquito bites, not from contact between travelers. Many people have mild illness or no symptoms and recover within one to two weeks, although tiredness can last longer. A smaller number develop a dangerous form that may require hospital care, and previous dengue infection increases that risk. There is no broadly available vaccine or cure; treatment focuses on managing pain. Visitors heading to Florida can reduce exposure with long clothing and mosquito repellent, including permethrin-treated garments. Anyone who becomes ill should watch for worsening symptoms, particularly after a fever ends, when severe dengue may appear.
- Hillsborough County is home to most reported Florida cases.
- Mosquito-control crews are treating affected areas day and night.
- Dengue illness can leave people fatigued for several weeks.
- The virus is active year-round in Florida’s warm climate.
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