The Department of Public Health and Social Services received one laboratory-confirmed case of dengue fever on Guam on Oct. 30, marking the second such case for 2025. DPHSS determined through an epidemiologic investigation that this was an imported case, meaning the infection was contracted outside of Guam. “As a reminder, dengue virus is transmitted through the bite of an infected mosquito and cannot spread directly from person to person. Those who live in, or travel to, an area where dengue is endemic are susceptible to infection from mosquito bites. Although dengue fever is not endemic to Guam, the Division of Environmental Health advises that the island has the mosquito vector that can transmit the virus,” a DPHSS release Tuesday stated. The first dengue fever case recorded this year was confirmed in mid-September, also determined to be an imported case.
