First Dengue Fever case of 2025 confirmed on Guam

The Department of Public Health and Social Services has confirmed Guam’s first laboratory case of Dengue Fever for 2025.

Officials say the case, reported on September 18, is most likely imported—but warn that the island does have the mosquito vector capable of spreading the virus. 

Health experts remind the community that dengue fever is transmitted only through mosquito bites and cannot spread from person to person. Symptoms usually last between two to seven days and include fever, body aches, rashes, and in some cases, mild bleeding around the nose or gums.

Residents are urged to seek immediate medical attention if they experience severe abdominal pain, persistent vomiting, significant bleeding, or extreme lethargy—signs of dengue hemorrhagic fever, a more dangerous form of the illness.

To prevent further spread, officials urge island residents to use insect repellant, wear long-sleeved light-colored clothing, and eliminate standing water where mosquitoes can breed.