Fiji: Dengue in the Pacific: Multicountry Situation (As of 27 July 2026)

Countries: Fiji, American Samoa, Cook Islands, French Polynesia (France), Guam, Kiribati, Micronesia (Federated States of), Nauru, New Caledonia (France), Niue (New Zealand), Palau, Samoa, Tokelau, Tonga, Tuvalu, Vanuatu, Wallis and Futuna (France) Sources: Pacific Community, World Health Organization Please refer to the attached file. HIGHLIGHTS • Since 1 January 2025, twelve dengue outbreaks have been reported across Pacific Island Countries and Areas (PICs). • During 2025, dengue outbreaks were reported in American Samoa, Cook Islands, Fiji, French Polynesia, Kiribati, Nauru, Samoa, Tonga, and Tuvalu. A total of 21, 258 confirmed cases and 21 deaths were recorded across the Pacific. Fatalities were reported in Fiji (n=8), Samoa (n=7), Tonga (n=3), Nauru (n=2), and Kiribati (n=1). • Between 1 January 2026 and 2 July 2026, a total of 4 466 dengue confirmed cases, 173 hospitalisations and 3 deaths have been reported across the Pacific. • The Pacific Syndromic Surveillance System (PSSS) has reported a total of 8 723 Dengue-like Illness (DLI) cases to date, a lower trend compared to the same period last year. • In 2026 dengue outbreaks were officially declared in New Caledonia, Tonga and Shefa province Vanuatu. • The most affected countries and areas in 2026 include: Cook Islands, French Polynesia, Samoa, and New Caledonia. These account for 94% of confirmed cases. • Dengue serotype-1 (DENV-1) and serotype-2 (DENV-2) are currently in circulation. • The Cook Islands officially declared the end of its dengue outbreak on 25 May 2026. • As of 27 July 2026: o The dengue outbreak remains ongoing in Shefa Province, Vanuatu, with dengue virus serotype 1 (DENV-1) continuing to circulate. o Low levels of transmission are observed in American Samoa, Kiribati, New Caledonia, Samoa, and Tonga. o Wallis and Futuna is under monitoring, following recent reports of community transmission in both Wallis and Futuna.

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