On which date did the World Health Organization declare the Ebola outbreak in the Democratic Republic of Congo and Uganda a Public Health Emergency of International Concern?

Answer: May 17, 2026

The WHO declared the Ebola outbreak a PHEIC on May 17, 2026. A PHEIC is the WHO's highest level of alarm, reserved for extraordinary events that pose a public health risk through international spread and require a coordinated international response. Previous PHEIC declarations include COVID-19, Zika, and earlier Ebola outbreaks.