For the first time, the extreme variability in dengue fever has been linked to a biological mechanism, potentially opening ...

It’s the venn diagram of travel that you don’t want, but spring and summer travel overlaps with the peak season for dengue fever in many countries, according to the Centers for Disease Control.

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

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.