Talking Points
What is Dengue?
- Dengue virus (DENV) is a common virus spread by the bite of infected Aedes mosquitoes. Countries in North and South America reported more dengue cases in 2024 than in any other year on record, and many countries are reporting higher-than-average cases in 2025.
- Many people who become infected may not experience symptoms. However, symptoms can include fever with nausea, vomiting, rash, muscle aches, joint pain, bone pain, or headache. Symptoms may begin five to seven days after exposure and typically resolve within two weeks.
Dengue Transmission
- How: Dengue is transmitted to humans through bites of infected Aedes mosquitoes. Transmissions typically peak in many countries during spring and summer, or warmer and wetter months. This peak coincides with the heaviest period of travel to and from the United States and can increase the risk of travel-associated and local cases. As global temperatures increase, there may be increased dengue cases in areas of the U.S. where dengue is not typically present due to travel-associated and local transmissions. There have been dengue cases in Florida, Hawaii, Texas, Arizona, New York, and California over the last two years.
- Where: Six U.S. territories and freely associated states are classified as areas with frequent or continuous dengue transmission: Puerto Rico, American Samoa, the U.S. Virgin Islands, the Federated States of Micronesia, the Republic of Marshall Islands, and the Republic of Palau.
- If you live in or travel to areas with frequent or continuous dengue transmission, you are at increased risk of dengue virus and should get tested if you are experiencing symptoms.
Dengue Prevention and Vaccination
- Prevention: Environmental Protection Agency (EPA)-approved repellents and wearing protective clothing like loose-fitting, long-sleeved shirts and pants can offer protection if you live in or travel to areas with continuous or frequent dengue transmission.
- Vaccination: To date, one vaccine (QDenga) has been approved and licensed in select countries. However, it is only available for people ages 6 to 16 years old who live in high transmission settings. Additional vaccines are currently being evaluated.
Dengue Treatment
- There is no specific treatment or medicine for dengue. If you have dengue, you can alleviate symptoms through rest, hydration, and acetaminophen to control fever and pain.
