Ten Local Dengue Cases in Florida, Most Detected Near Melbourne

The Florida Department of Health (FDH) today reported that additional locally-acquired and travel-related Dengue fever cases have been confirmed in various counties in 2025.

As of August 9, 2025, FDH confirmed ten locally acquired dengue cases (DEN-3, DENV-4) were reported in Miami-Dade (2) and Brevard (8) counties in 2025.

While several cities are located in Brevard County, Melbourne has the largest population at risk for this mosquito-transmitted disease, with over 87,000 residents.

To alert residents, DOH-Brevard has issued a Mosquito-Borne Illness Alert that is scheduled to be in effect through September 12, 2025.

Additionally, there have been 141 travel-related Dengue cases in Florida, most related to travelers from Cuba.

The FDH says Dengue infections can present as a flu-like illness with severe muscle aches and joint pain, fever, and sometimes a rash, and may appear within 15 days after being bitten by an infected mosquito.

Furthermore, Dengue fever is not contagious.

Currently, Dengue vaccines are unavailable in the continental U.S. However, Puerto Rico is testing a first-generation vaccine on children.