World: Epidemic and emerging disease alerts in the Pacific as of 18 November 2025

Countries: World, American Samoa, Australia, Canada, Cook Islands, French Polynesia (France), Guam, Kiribati, Nauru, New Zealand, Palau, Papua New Guinea, Samoa, Tuvalu, United States of America, Vanuatu Source: Pacific Community Please refer to the attached Map. Highlights/updates since the last map was sent on PacNet on 11 November 2025: Dengue American Samoa: On 8 July 2025, American Samoa declared a public health emergency in response to a dengue outbreak. Since the last update on 4 November, 33 new cases have been reported, bringing the total to 381 lab-confirmed cases. Hospital admissions have decreased in the past few weeks with no severe complications or dengue haemorrhagic fever observed. Laboratory analysis conducted by the Hawaii State Laboratory confirmed co-circulation of DENV-1 and DENV-2, prompting authorities to urge the public to take preventive measures such as avoiding mosquito bites, eliminating mosquito breeding sites, and supporting community-based vector control efforts. The red alert for DENV-1 and DENV-2 remains in effect. – Source: American Samoa Department of Health Update as of 14 November 2025 accessed on 18 November 2025. Cook Islands: On 22 May 2025, the Cook Islands Ministry of Health declared a dengue outbreak in Rarotonga, with 206 cases reported by 7 November, 188 recovered and 18 still active. Most of the cases belong to the 10-19 age group with no fatalities or severe dengue cases reported. Of 50 serotyped samples, 47 were DENV-1 and 3 were DENV-2, confirming co-circulation. Authorities are conducting clean-up and mass spraying campaigns, urging the public to eliminate mosquito breeding sites, use repellents, wear protective clothing, and seek medical care if symptoms appear. The blue alert for DENV-1 and DENV-2 remains in effect. – Source: Cook Islands 2025 Dengue Status Update #44 (7 November 2025) accessed on 18 November 2025. Kiribati: The Ministry of Health and Medical Services (MHMS) confirmed a dengue outbreak on 24 April