Over 4,500 cases, and the stockpiled vaccine targets the wrong species.

Ervebo protects against Zaire ebolavirus, not the Bundibugyo strain now spreading fastest on record.

The WHO is negotiating a Phase 3 trial randomizing contacts of confirmed cases between Ervebo and placebo.

Oxford and Moderna’s Bundibugyo-specific candidates could join the trial if September safety data hold.

Sources: STAT