Fiji's Dengue Outbreak is Spiking

According to a new report from the World Health Organization (WHO), Dengue is a mosquito-borne viral infection that has caused significant increases in severe flu-like illness across the globe.

For example, the WHO's Western Pacific Region continues to face a high burden of Dengue-like Illnesses in the Republic of Fiji, an island country in the South Pacific Ocean.

Dengue Situation Update #720, published on April 3, 2025, shows that Fiji has reported over 800 cases of Dengue each of the last two weeks. This data indicates a significant increase above the five-year median of 300 monthly cases in the early part of most years.

This year's Dengue outbreak may upset vacationers planning to visit this unique destination in 2025. Fiji visitors reached a new high of over 900,000 in 2024, an increase of 5.7% compared to last year.

To forewarn international visitors in 2025, the U.S. CDC includes Fiji in its reissued Global Dengue Travel Health Advisory, which says people should avoid being bitten by a virus-carrying mosquito.

Since the WHO's Strategic Advisory Group of Experts on Immunization shared recommendations for use of the QDENGA® vaccine in October 2023, about 40 countries have authorized its use. However, the United States has yet to authorize this second-generation Dengue vaccine.