Dengue fever is caused by four viruses: dengue virus 1, 2, 3, and 4. It is spread primarily by the bite of the Aedes aegypti mosquito, which bites generally during the day, per the CDC.

Dengue fever is a mosquito-borne illness causing high fever, severe pain, and potential complications. Learn about symptoms, treatment, prevention, and risk areas.

There is a vaccine for dengue fever (QDenga) that is approved in some countries. However, the World Health Organization only recommends it for children ages 6 to 16 who live in areas where dengue ...

Dengue fever is caused by four viruses, so a person can be infected four times in their lifetime. Only about 1 in 4 people are symptomatic the first time they’re infected, according to the CDC.

Dengue fever can cause serious illness, which is sometimes fatal. In 2024, there were 13 million cases and 8,200 deaths from dengue in the Americas.

Dengue fever is a disease spread by mosquito bites. There’s no vaccine to prevent it. Dengue can be mild or severe.

Climate change is poised to increase the spread of dengue fever, which is common in parts of the world with warmer climates like Brazil and India, a new study warns. Worldwide each year, there are ...

Puerto Rico has recorded at least 1,012 cases of dengue so far in 2025, followed by Florida, 50, and the U.S. Virgin Islands, which has 40 recorded cases.

Dengue virus, often referred to as dengue fever or "break-bone fever," due to pain being one of the major symptoms, is spread to humans through the bite of an infected mosquito.

Here’s what to know about dengue. What is dengue? Dengue is a mosquito-borne disease that can be found worldwide. It’s caused by four related viruses called DEN-1, DEN-2, DEN-3 and DEN-4.

Dengue fever is a mosquito-borne illness causing high fever, severe pain, and potential complications. Learn about symptoms, treatment, prevention, and risk areas.