WHO Declares Bundibugyo Virus Outbreak a Public Health Emergency in DRC and Uganda

The World Health Organization has officially declared the Bundibugyo virus outbreak in the Democratic Republic of the Congo (DRC) and Uganda a Public Health Emergency of International Concern (PHEIC). This determination follows a surge in cases and deaths that has crossed international borders, marking an extraordinary health event that necessitates urgent global coordination.

As of May 16, 2026, health officials have reported eight laboratory-confirmed cases, 246 suspected cases, and 80 suspected deaths in the Ituri Province of the DRC. The virus has impacted multiple health zones, including Bunia, Rwampara, and Mongbwalu. Two confirmed cases—including one death—have been identified in Kampala, Uganda, involving individuals who recently travelled from the DRC.

The Scope of the Crisis

The situation is compounded by high population mobility, ongoing regional insecurity, and a humanitarian crisis in the affected provinces. Experts are particularly concerned about healthcare-associated transmission, as at least four deaths among healthcare workers have been recorded in a context suggestive of viral hemorrhagic fever. These incidents highlight critical gaps in infection prevention and control measures within local facilities.

While the current reported numbers are significant, health authorities believe the actual scale of the outbreak may be larger. The high positivity rate among initial samples, combined with the emergence of cases in urban centres like Kampala, suggests a high risk of further local and regional spread. The lack of specific medical countermeasures further elevates the risk profile of this event.

What Happens Next?

In the coming weeks, the WHO is expected to convene an Emergency Committee to advise on temporary recommendations for member states. Affected nations are being urged to activate national emergency operations centres to manage surveillance, contact tracing, and laboratory diagnostics. Authorities are also prioritizing the training of healthcare workers in personal protective equipment (PPE) usage and the establishment of safe referral pathways for patients.

For neighboring countries, the focus will likely shift toward enhanced preparedness. This includes active surveillance, the establishment of rapid response teams, and ensuring that health facilities are equipped to manage potential cases. For the broader international community, the directive remains clear: avoid travel and trade restrictions, which are scientifically discouraged and may hinder the logistical flow of supplies necessary to combat the virus.

Frequently Asked Questions

Is the Bundibugyo virus outbreak considered a pandemic?
No. While the WHO has determined the outbreak is a Public Health Emergency of International Concern (PHEIC), it does not currently meet the criteria for a pandemic emergency as defined by the International Health Regulations.

Should countries close their borders to prevent the spread?
The WHO advises against closing borders or restricting trade. Such measures lack scientific basis and often push the movement of people toward informal, unmonitored crossings, which can actually increase the risk of disease transmission.

What is being done to treat the affected individuals?
Efforts are underway to establish specialized treatment centres near the outbreak epicenters. Authorities are also working to implement clinical trials for candidate therapeutics and vaccines to address the current lack of approved medical countermeasures.

How can local communities best support the effort to identify and contain the spread of this virus?