First reported occurrence of Ebola virus disease in the Republic of the Congo.[23] 2002–2003 Republic of the Congo EBOV 143 128 90% Occurred in the districts of Mbomo and Kéllé in Cuvette Ouest Département between December 2002 and April 2003.[24] 2003 Republic of the Congo EBOV 35 29 83% Occurred in Mbomo and Mbandza villages located in Mbomo district, Cuvette Ouest Département, between November and December.[25] 2004 Sudan SUDV 17 7 41% Occurred in Yambio county in Western Equatoria of southern Sudan.