Tampa, United States
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Florida sees largest US dengue outbreak in a century

More than 400 locally acquired dengue cases have been reported in the United States this year, almost all in Florida, marking the biggest domestic outbreak in nearly a hundred years. The surge is tied to the death of an elderly resident and to travelers who returned infected from endemic regions, passing the virus to local Aedes aegypti mosquitoes. A drought followed by June rains helped hatch resilient mosquito eggs, and Tampa recorded a sharp rise in cases after showing less preparedness than southern counties.

Key facts

  • Drought‑resistant mosquito eggs hatched after June rains, aiding the spread of dengue.
  • Tampa experienced a sharp increase in cases due to lower preparedness compared with southern counties.
  • Aedes aegypti mosquitoes, capable of transmitting dengue, are widespread across Florida.

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Why it matters

Rising dengue cases highlight emerging vector‑borne disease risk in the US.

What changed

  1. First published from NPR