As of July 21, the Congolese Ministry of Health reported 2,536 confirmed cases and 1,033 deaths since the outbreak was declared on May 15. This outbreak, caused by the Bundibugyo virus, has a case fatality rate of 40%, with officials attributing many deaths to late symptom reporting. In contrast, the 2014-2016 outbreak, driven by the more lethal Ebola virus, had a fatality rate of 66% and took eight months to reach 1,000 deaths. The current outbreak remains largely confined to five provinces in eastern Congo.