The DRC Bundibugyo Ebola outbreak recorded 579 confirmed cases and 304 deaths in epidemiological week 32 (Aug 3–9) — both the highest single-week totals since WHO declared a PHEIC on May 17. Cumulative as of Aug 12: 4,665 confirmed cases, 2,184 deaths, crude CFR 46.8%. Existing approved therapeutics mAb114 and REGN-EB3 are certified for Zaire ebolavirus — a different species — leaving responders without a validated drug for this strain.
1
Treatment gap
Approved therapeutics mAb114 and REGN-EB3 target Zaire ebolavirus; efficacy against Bundibugyo is unvalidated. WHO initiated compassionate-use protocols, but coverage is thin across the highest-burden provinces. Security in eastern DRC has deteriorated: 12 attacks on health facilities since the May 17 PHEIC declaration have severed contact-tracing chains in North Kivu and Ituri.
2
Uganda cross-border risk
The 2026 outbreak mirrors the 2007 DRC-Uganda Bundibugyo cross-border pattern. Uganda has initiated preventive vaccination in high-risk border districts, but porous border crossings sustain transmission risk. WHO is monitoring sentinel surveillance in three neighboring countries for secondary spillover into thinner health systems.
3
Emergency funding gap
CEPI has committed $120 million to accelerate Bundibugyo vaccine platform work as of mid-August. The WHO Contingency Fund for Emergencies carries a $72 million gap. Each week of underfunding extends the window for cross-border spillover into health systems with fewer containment resources than DRC or Uganda.
Watch the week 34 case count. If the upward trend holds, the WHO Emergency Committee convenes again in mid-September.
Sources
- ✓ WHO Disease Outbreak News — Ebola disease caused by Bundibugyo virus, DRC — 2026-DON615
- ✓ STAT News — WHO declares Ebola outbreak international public health emergency — 2026-05-17
- ✓ Wikipedia — 2026 Central Africa Ebola epidemic
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