Dengue in Florida: Tires, Standing Water and a Risk for Truckers

Florida is facing an unusual increase in dengue cases, with the Tampa area emerging as the main hotspot. The Florida Department of Health reported in September that Hillsborough County had recorded 59 locally acquired dengue infections, meaning cases involving people who did not contract the virus while traveling outside the area.

The situation drew even more attention this week after the death of an 80-year-old Tampa woman who had been diagnosed with dengue.

Health authorities are investigating the case and have not officially confirmed that dengue was the cause of her death. If that connection is established, it could become the first dengue-associated death recorded in the Tampa Bay area in approximately a century.

For truckers traveling through Florida—especially those making deliveries, pickups, stops or overnight stays in the Tampa area—the outbreak adds a risk that is not normally part of trip planning.

Tampa at the Center of the Outbreak

#BREAKING Nearly 100 cases of dengue fever have been reported in Hillsborough County, the highest of any Florida county seen in the latest state data. https://t.co/i6Wzov42yl pic.twitter.com/XE9blrPgaj

— WFLA NEWS (@WFLA) September 10, 2026

The increase in cases prompted Hillsborough County to intensify mosquito-control measures. On September 3, the county announced aerial mosquito treatments in parts of Seminole Heights, Sulphur Springs and East Tampa, including areas near the I-4 and I-275 corridors.

Dengue is primarily transmitted through the bite of infected Aedes mosquitoes. Contrary to the common belief that mosquitoes are mainly a problem around dusk, the CDC warns that mosquitoes capable of transmitting dengue can bite during both the day and night.

For truckers, that means exposure can happen during completely routine activities: inspecting the truck, securing cargo, waiting at a shipper, standing at a loading dock, fueling, taking a break at a truck stop or making an outdoor repair.

How Often Should You Reapply Mosquito Repellent?

There is no universal “every four hours” or “every six hours” rule.

The Environmental Protection Agency (EPA) says repellent should be reapplied according to the specific directions on the product label, because protection time varies depending on the product, its concentration and the conditions in which it is used.

Sweating, contact with water, temperature and physical activity can reduce how long the protection lasts.

The CDC recommends using EPA-registered repellents containing active ingredients such as DEET, picaridin, IR3535, oil of lemon eucalyptus (OLE), PMD or 2-undecanone.

For long trips, drivers should keep repellent inside the cab and check the label to determine exactly how many hours of protection the specific product provides. There is no need to wait until nighttime to use it.

Long pants and loose-fitting, long-sleeved shirts are also recommended when spending time in areas with mosquitoes. Clothing and certain types of gear can be treated with 0.5% permethrin, but the CDC stresses that permethrin products intended for clothing and gear should not be applied directly to the skin.

Watch Out for Tires and Cargo

Another issue is particularly relevant to the trucking industry. Aedes mosquitoes breed in small amounts of standing water. The Florida Department of Health lists used tires, drums, bottles, cans, buckets, coolers and other containers capable of holding rainwater among the items that should be emptied or removed.

Hillsborough County has been even more explicit: health authorities warn that a single tire holding water can provide conditions for hundreds of mosquitoes to breed and multiply.

This is particularly important for trucks carrying used tires, scrap tires, empty drums, containers, machinery, open equipment or materials that were stored outdoors before being loaded.

That does not mean these loads “attract dengue.” Dengue does not travel in cargo, and products do not transmit the disease. The problem arises when an object holds water and provides mosquitoes with a place to lay eggs and complete their life cycle.

Drivers should also pay attention to trailer tarps. A poorly tightened tarp can create small pockets where rainwater collects after a storm. Florida recommends covering vehicles, boats and other items in a way that prevents tarps from collecting rainwater.

After heavy rain—or before moving cargo that has been sitting outdoors for several days—a quick inspection for standing water can help reduce the risk.

Is It Safe to Sleep Inside the Truck?

A closed, air-conditioned cab considerably reduces exposure compared with staying outdoors, as long as the doors and windows remain closed and mosquitoes do not have a way to get inside.

The CDC recommends staying and sleeping in places that are air-conditioned or protected by screens when there is a risk of mosquito-borne diseases.

For drivers taking their required rest inside the sleeper, the greatest exposure is likely not while sleeping with the cab closed, but during activities performed outside the truck.

What Symptoms Should Truckers Watch For?

Dengue symptoms can develop within two weeks after the bite of an infected mosquito.

The CDC lists possible symptoms including fever, headache, muscle or joint pain and rash.

A driver who has recently been in Tampa or another area with local transmission and later develops a fever should tell the healthcare provider where they have been traveling, as that information can help guide the diagnosis.

There is another recommendation particularly relevant to long-haul truckers: an infected person can indirectly contribute to moving the virus to another area if a mosquito bites them while the virus is circulating in their blood and that mosquito later infects someone else.

For that reason, the CDC advises people returning from an area with dengue risk to continue preventing mosquito bites for three weeks, even if they do not develop symptoms.

Checklist Before Entering Florida

For truckers traveling through Florida during the current alert, the precautions are simple:

• Carry an EPA-registered mosquito repellent and use it according to the protection time stated on the label.
• Do not limit repellent use to nighttime. Mosquitoes that transmit dengue also bite during the day.
• Wear long sleeves and long pants when spending extended periods outside the cab.
• Keep truck windows and doors closed whenever possible.
• Check tires, tarps, containers and equipment for standing water.
• Take extra precautions with loads that have been stored outdoors after rainfall.
• If fever, muscle or joint pain, headache or rash develops after the trip, seek medical care and mention recent travel in Florida.

The increase in cases does not mean truckers should avoid Florida, nor does carrying certain types of cargo mean they can transmit dengue. But for drivers who spend much of their day getting in and out of the truck, inspecting loads and waiting outdoors, repellent, appropriate clothing and eliminating small amounts of standing water become especially important while local transmission continues.