Into March 2026, the Samoa dengue outbreak, which started in early 2025, continues with 17,402 cumulative clinically diagnosed cases and 5,117 laboratory‑confirmed cases reported.
During EpiWeek 10 (02–08 March 2026), 187 new cases were notified, representing a 7% decrease compared with the previous week, alongside 10 new hospital admissions, with no new ICU admissions or dengue‑related deaths reported during the week.
Transmission remains widespread, with 64% of cases reported from Upolu and 36% from Savaii, and children under 15 years accounting for 74% of all cases.
Two thirds of the cases have been serotyped as DENV-1, while one third are typed as DENV-2.
The number of deaths has risen to nine.
An outbreak is declared over when no new laboratory confirmed cases are detected within two incubation periods of the disease (one incubation period is 14 days). Therefore, a total of 28 days without any new laboratory confirmed cases is required to declare an outbreak over.