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Sierra Leone Measles Outbreak Response - DREF Operation (MDRSL021)

Sierra Leone Measles Outbreak Response - DREF Operation (MDRSL021)

. Description of the EventDate when the trigger was met 13-05-2026 What happened, where and when? On 13 May 2026, the National Public Health Agency (NPHA), in collaboration with the Ministry of Health (MoH), officially declared a measles outbreak in Sierra Leone following confirmation of sustained t