HONOLULU (KHON2) — The Hawai‘i Department of Health (DOH) has confirmed a new travel-related case of dengue virus on Oʻahu, bringing the total number of dengue cases to 12 in the state in 2025, one on Maui, 11 on Oʻahu.
The Department of Health said that the individual was exposed to the virus while traveling in a region where dengue is common.
DOH teams have been able to apply mosquito control measures in the area, reducing the risk of local spread.
The spread of dengue happens when an infected person gets bit by a mosquito, and the mosquito bites back on to another person.
City officials said that the public should follow best practices to help prevent local spreading of this virus.
Dengue is known to be a year-round risk in tropical and subtropical areas, which include Central and South America, Asia (including the Republic of the Philippines), the Middle East, Africa and several Pacific Islands, such as U.S. territories like American Samoa, the Federated States of Micronesia, the Republic of the Marshall Islands and the Republic of Palau.
The Centers for Disease Control and Prevention (CDC) advises all travelers to be cautious when visiting these areas.
Travelers who return from dengue-endemic areas should avoid the risk of getting mosquito bites for at least three weeks, to reduce the probability of catching the case.
Symptoms of dengue like nausea, fever, vomiting, rash and body aches can last from up to two to seven days. If symptoms develop within two weeks, you should see a doctor.
The Department of Health is doing inspections and suggests getting rid of common breeding sites for mosquitos, like buckets, water-catching plants, and even cups left out.
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At home, pouring out containers of standing water can significantly reduce the potential for mosquito breeding.