The current Ebola outbreak caused by the Bundibugyo species, was declared by DRC health officials on 15 May and declared a public health emergency of international concern by the World Health Organization (WHO) two days later. Only West Africa’s 2014 to 2016 outbreak, which saw more than 11,000 deaths, was larger. Mutation fears ariseAlarmed by the virus’s rapid spread, local health officials have recently raised concerns that the virus could be mutating. Violence, geography imperil responseThe Ebola Bundibugyo virus is proving hard to control in eastern DRC because of ongoing violence by non-State armed groups in the remote and mineral-rich region and a lack of accessible healthcare for vulnerable populations. Although Rwanda has not confirmed any Ebola Bundibugyo cases, the country remains at risk due to frequent border crossings.