Hillsborough Reports Decline in Weekly Dengue Cases
Hillsborough County recorded 22 new locally acquired dengue cases for the week of Oct. 25–31, marking a significant decrease in the state’s weekly update, WUSF reported. The latest figures from the Florida Department of Health arbovirus surveillance webpage show the lowest weekly total in months, dipping below 25 new infections for the first time since local emergency measures began.
County Administrator Bonnie Wise extended the local state of emergency through Nov. 12. The emergency declaration was initially issued on Sept. 24. Mosquito surveillance data indicates ongoing virus activity within local insect populations, prompting crews to scale up both aerial and ground treatments.
Aerial Treatments Target Mosquito Hotspots Across the Bay
Public health officials identified a populated area northeast of downtown Tampa as a designated hotspot. Hillsborough mosquito management teams are deploying treatments by air and ground to curb the Aedes mosquito population responsible for spreading the virus. Across the bay, Pinellas County reported 13 additional cases for a total of 80 since early August, prompting Pinellas County Mosquito Control to conduct aerial larvae treatments in St. Petersburg and Clearwater.
The two counties accounted for nearly all of the 39 new locally acquired infections added to the state database during the late October reporting window. Miami-Dade confirmed three new cases and Orange County added one, bringing Florida’s total count to 524 cases since the outbreak began in July. Pinellas County also enacted a local state of emergency on Sept. 24 as case numbers accelerated.
Travel Brings Dengue Cases to the State
Beyond local transmission, international travel continues to introduce dengue into the state. The Florida Department of Health database added 27 travel-associated cases for the week ending Oct. 31, raising the annual total to 382. The vast majority of these travel-related infections were recorded in Miami-Dade County, driven by visitors returning from Puerto Rico and other endemic regions.
Health experts emphasize that the reported figures likely represent undercounts because many infected individuals experience no symptoms. For those who do fall ill, symptoms resemble influenza, including fever, muscle aches, headaches, joint pain, and rashes. Severe cases commonly require hospitalization and can lead to bleeding, shock, or death.
Pro Tips for Personal Protection
- Apply insect repellent before heading outdoors.
- Wear long-sleeved shirts and long pants to minimize exposed skin.
Frequently Asked Questions About the Florida Dengue Outbreak
How do Aedes mosquitoes transmit the dengue virus?
Female Aedes mosquitoes acquire the virus while biting an infected human and subsequently transmit it to other people during later feedings. This species is common throughout Florida.
What is the difference between a mosquito-borne illness advisory and an alert?
An advisory warns residents that mosquito-borne disease activity has been detected, while an alert indicates a higher level of concern involving confirmed local human transmission and more aggressive public health interventions.
How does the current outbreak compare to previous years in Florida?
The Florida outbreak is the largest in the United States in decades, far exceeding previous historic highs such as the 199 cases recorded statewide in 2023 and the 62 cases reported last year.
Unresolved Questions Surrounding Vector Control Efforts
While weekly case increments have slowed in Hillsborough County, the local state of emergency remains in effect through Nov. 12.