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What virus strain caused the 2026 Ebola outbreak in Central Africa?

The 2026 Ebola outbreak in Central Africa was caused by the Bundibugyo strain of Ebola virus, a rare ebolavirus species first identified in Uganda in 2007. Unlike the more common Zaire strain, Bundibugyo virus currently has no licensed vaccine or approved targeted antiviral treatment, complicating efforts to contain the outbreak.