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Event Brief

WHO announces Ebola vaccine trial in DR Congo

The WHO announced the start of a clinical trial in the Democratic Republic of Congo to test the safety, efficacy and immunogenicity of multiple Ebola vaccines. Ervebo, approved against the more common Zaire strain, will be tested for possible cross-protection against the Bundibugyo strain.
WHO: The World Health Organization
WHAT: announced the start of a clinical trial of multiple Ebola vaccines in the Democratic Republic of Congo.
WHEN: Reported Oct 23, 2026 at 8:12 PM ET
WHERE: Democratic Republic of Congo
WHY: The trial is intended to test the vaccines’ safety, efficacy and immunogenicity, including whether Ervebo offers cross-protection against the Bundibugyo strain.

Reporting from 3 identified publishers across this event arc.

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