Florida confirms first dengue fever death of 2026

Florida health officials have confirmed the state’s first dengue fever death of 2026. The fatality involved an 80-year-old woman from Hillsborough County who died on September 4 following complications including septic shock and multi-organ failure.

The death marks a significant milestone in what is being described as one of the state’s most severe mosquito-borne illness outbreaks in decades. As of September 2026, Florida has recorded 152 locally acquired dengue cases, with the vast majority—134 cases—concentrated in Hillsborough County near Tampa.

Public health experts attribute the surge in locally transmitted infections to favorable weather conditions and climate change, which have expanded the geographic reach of the Aedes aegypti mosquito. In response, vector control teams have intensified aerial and ground spraying operations and are conducting inspections of residential properties to eliminate standing water where mosquitoes breed.

While many dengue infections are asymptomatic or mild, severe cases can lead to life-threatening complications. The current outbreak represents the second-highest number of locally acquired cases in Florida's recent history, trailing only the record set in 2023.