The Hawai‘i Department of Health (DOH) has confirmed a new travel-related dengue virus case on Oʻahu. This brings the total number of cases identified in the state in 2024 to 13, with one case on Kauaʻi, three on Maui, and nine on Oʻahu. The individual affected had traveled to a region known for dengue transmission.
DOH teams have been deployed to conduct inspections and mosquito control measures in the affected area. The department urges community members to help minimize the risk of local transmission by following recommended practices.
Dengue virus spreads through mosquitoes that bite an infected person and then another person. Although Hawai‘i has mosquitoes capable of carrying dengue, the disease is not endemic in the state; it is currently only found among travelers. Many regions worldwide are experiencing higher-than-usual dengue activity.
Dengue outbreaks occur in parts of Central and South America, Asia, including the Republic of the Philippines, the Middle East, Africa, some Pacific Islands like American Samoa, Federated States of Micronesia, Republic of Marshall Islands and Republic of Palau, as well as Caribbean tourist destinations such as Puerto Rico.
Travelers heading to or returning from areas with dengue are at risk. The Centers for Disease Control and Prevention (CDC) advises taking precautions such as using EPA-registered insect repellent, wearing long-sleeved clothing outdoors, and sleeping in air-conditioned rooms or under insecticide-treated nets.
With some countries reporting increased cases, travelers should review country-specific information four to six weeks before their trip for updated guidance on dengue risks and prevention. Those returning from high-risk areas should avoid mosquito bites for three weeks. If symptoms develop within two weeks after return, medical evaluation is recommended.
Symptoms can range from mild to severe including fever, nausea, vomiting, rash and body aches lasting two to seven days. While severe illness can occur, most people recover within a week. Travelers experiencing symptoms after recent travel should seek medical advice.
In suspected or confirmed dengue areas within Hawai‘i DOH personnel conduct inspections and activities aimed at reducing mosquito populations to prevent further transmission. In unaffected areas eliminating mosquito breeding sites around homes is advised since mosquitoes require minimal standing water to breed.
For additional details visit the Disease Outbreak Control Division (DOCD) website or Vector Control Branch (VCB) website.