Dengue fever

Dengue outbreak in Samoa, ongoing since January 2025. Per Samoa Ministry of Health situation report (Issue No. 47, 9 March 2026, epi-week 10): 17,402 cumulative clinically diagnosed cases and 5,117 lab-confirmed cases since 1 January 2025, 9 dengue-related deaths, serotypes DENV-1 (68%) and DENV-2 (32%), 64% of cases in Upolu and 36% in Savaii, children under 15 accounting for 74% of cases. Per the WHO/SPC regional Pacific dengue update (7 August 2026), Samoa remains one of the most-affected 2026 Pacific countries, with low levels of transmission continuing as of early August 2026 -- unlike Tonga (outbreak declared over 31 July 2026) and Cook Islands (25 May 2026).

Case trend

Insufficient data (< 7 days)

First actions

• →Log in national surveillance system — continue routine monitoring
• →Compare with seasonal baseline for this region and disease
• →Include in weekly surveillance briefing — escalate if trend worsens (▲ cases or CFR)

Cite this page (Vancouver)

HealthWatch Global. Dengue fever outbreak — Samoa [Internet]. 2026-03-08 [cited 2026 Aug 10]. Available from: https://healthwatch-global.com/en/outbreak/c0094fae-5b55-485a-ac92-9ad0362d8901. Data source: Official.