Dengue Fever Death in Florida and the Rising Cases Across the U.S.

Florida has reported its first dengue fever death of 2026. The mosquito-borne disease is spreading across parts of the United States, with nearly 2,000 cases recorded nationwide this year. An 80-year-old woman from Hillsborough County died on September 4 due to complications including septic shock and multiple organ failure after contracting the virus, according to Tampa Bay Times reports. This death occurs amid one of Florida’s most significant dengue outbreaks in recent years as health officials monitor rising case numbers in several U.S. jurisdictions.

What Is Dengue Fever?

Dengue fever is a viral illness transmitted by mosquitoes. It usually results in flu-like symptoms such as fever, headache, and severe joint pain. Although the illness is not generally fatal, it can occasionally lead to life-threatening complications like shock, internal bleeding, and organ failure.

Dengue Fever in the US

The Centers for Disease Control and Prevention (CDC) states that the risk of widespread dengue transmission in the continental United States is low. Most cases occur due to people traveling back from countries with higher dengue prevalence. Of the 1,927 cases reported in U.S. states and territories this year, Puerto Rico has recorded 907 and American Samoa 437, based on CDC data. Florida’s reported 332 cases are the highest among U.S. states. State health officials have noted over 150 locally acquired infections, meaning residents contracted dengue within Florida, not during travel abroad.

What Are the Symptoms of Dengue Fever?

Dengue symptoms typically appear two to seven days after an infected mosquito bite. Common symptoms include fever, headache, pain behind the eyes, muscle pain, nausea, vomiting, and rash, according to the CDC. Approximately one in four infected individuals become ill, with most recovering within a week. Severe symptoms include intense stomach pain, persistent vomiting, bleeding from the nose or gums, blood in vomit or stool, and extreme fatigue.

How Unusual Is the Dengue Outbreak?

The virus is spread by mosquitoes that thrive in warm weather, common in Florida as per the CDC. Recent outbreaks in Florida are largely linked to warmer weather. Health officials indicate that high temperatures and rainfall can boost mosquito populations, creating favorable conditions for outbreaks. “We are seeing warmer temperatures and lots of rain. This gives mosquitoes plenty of breeding places. They don’t need a large body of water. They only need water sitting in a flowerpot, bucket, tire, or small container,” Kristi Miley, a researcher at the USF College of Public Health’s Center for Global Health and Infectious Disease Research, noted in a USF Health article.

Hillsborough County authorities have intensified mosquito-control efforts during the outbreak. Actions include spraying and monitoring mosquito populations. While recent surveillance suggests transmission may be slowing, residents are still advised to take protective measures against mosquito bites.

Contact Newsweek editors on this story: John Fitzpatrick and Emma Lee-Sang