A rare Ebola outbreak is spreading rapidly in Congo and Uganda. The Bundibugyo virus has no approved treatments. Health workers face challenges due to conflict and a distrustful population. International aid is arriving, but the response struggles to keep pace with the escalating crisis. The World Health Organization has declared a public health emergency to spur action.

The outbreak is threatening to overwhelm health authorities in the Democratic Republic of Congo, while nine cases have now been confirmed in neighbouring Uganda.

Aid groups warn the response has not kept pace with one of the fastest-spreading outbreaks on record, with 906 suspected cases and 223 suspected deaths.