The World Health Organization (WHO) has declared the Ebola outbreak caused by the Bundibugyo virus strain in the Democratic Republic of the Congo and Uganda a Public Health Emergency of International Concern (PHEIC). However, the agency said the outbreak does not yet qualify as a pandemic emergency under International Health Regulations.

WHO Director-General Tedros Adhanom Ghebreyesus said the declaration followed consultations with authorities in both countries and was based on the growing risk of international spread, increasing infections, and concerns over the true scale of the outbreak.

According to WHO, as of May 16, 2026, eight laboratory-confirmed cases, 246 suspected cases, and 80 suspected deaths had been reported in Ituri Province in eastern DR Congo. The affected areas include Bunia, Rwampara, and Mongbwalu health zones.

Uganda also confirmed two Ebola cases in Kampala within 24 hours, including one death, involving travellers from DR Congo.

WHO expressed concern over unusual clusters of deaths, suspected healthcare-related transmission, and the possibility that the outbreak may be significantly larger than currently detected.

The agency noted that insecurity, population movement, humanitarian challenges, and weak healthcare infrastructure in affected areas could worsen the spread of the disease.

WHO further warned that, unlike the Zaire strain of Ebola, there are currently no approved vaccines or treatments specifically for the Bundibugyo virus strain.

The global health body urged affected countries to intensify surveillance, contact tracing, infection prevention measures, laboratory testing, and community engagement. It also advised neighbouring countries to strengthen preparedness and border screening efforts.

WHO said there should be no international travel restrictions or border closures, warning that such measures could disrupt response operations and encourage unmonitored movement across borders.

An Emergency Committee is expected to meet soon to advise WHO on additional temporary recommendations aimed at containing the outbreak.