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Florida Dengue Outbreak Hits Historic Levels
3 Oct
Summary
- Florida's dengue cases exceed 250, the most since the 1940s.
- Hillsborough County, near Tampa, reports the vast majority of cases.
- Mosquito control efforts include spraying and eliminating breeding sites.

Florida is currently facing a historic dengue fever outbreak, recording more than 250 locally acquired cases this year. This surge represents the highest number of cases in a single calendar year for any continental U.S. state since at least the 1940s, with Hillsborough County, home to Tampa, being the epicenter. The situation has prompted local emergencies, leading to extensive, round-the-clock mosquito spraying efforts to curb the proliferation of disease-transmitting insects.
Dengue, a virus spread by mosquitoes, can cause fever, flu-like symptoms, and excruciating pain, earning it the nickname 'breakbone fever.' Severe cases can be fatal, and one death has been reported in Florida this year. While Puerto Rico consistently experiences high dengue numbers, continental U.S. outbreaks are less common. Florida's previous record was just under 200 cases in 2023. Climate change is contributing to the expanding geographic reach of dengue-carrying mosquitoes, making local outbreaks a potentially recurring issue.
To combat the outbreak, authorities are not only spraying to kill adult mosquitoes but also inspecting properties for standing water, a common breeding ground. Residents are advised to use EPA-registered insect repellents, wear protective clothing, and stay indoors during peak mosquito activity, typically around dawn and dusk. These preventative measures are crucial as experts suggest that such significant local outbreaks may become the new normal.