The DRC's Bundibugyo Ebola outbreak lacks a vaccine, removing a proven defense

The DRC has confirmed 515 cases of Bundibugyo Ebola by June 6, but no vaccine exists for this strain. The approved Ebola vaccine targets only the Zaire strain. Without a matching vaccine, ring vaccination—the targeted approach that contained recent outbreaks—is unavailable. The outbreak now advances without this critical containment tool.