Tampa, FL — Florida is experiencing what appears to be the largest dengue outbreak in the continental United States in decades, with more than 250 locally acquired cases reported so far this year.
Most cases have occurred in Hillsborough County, which includes Tampa. Florida’s previous high was just under 200 locally transmitted cases in 2023. One death has been reported this year, involving an elderly Tampa woman in September.
Dengue is a mosquito-borne viral illness that often causes fever, severe body aches and other flu-like symptoms. Serious infections can lead to bleeding, shock and death. Many infected people, however, develop few or no symptoms.
Local officials have declared emergencies in Hillsborough and neighboring counties while mosquito-control crews conduct spraying and inspect properties for standing water where mosquitoes can breed.
Experts say Florida’s warm climate and heavy international travel contribute to dengue transmission. Mosquito species capable of spreading the virus have also expanded their range as temperatures rise, increasing concern that locally transmitted dengue could become more common.
The Centers for Disease Control and Prevention has provided Florida with $800,000 in assistance, although state officials have not requested CDC investigators.
Residents are being urged to use EPA-registered repellents, wear long clothing and eliminate standing water around their homes.
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