Cases of Ebola haemorrhagic fever notified to WHO since the virus was first detected in 1976: 1972: 1 retrospectively diagnosed non fatal case in Tandala, Zaire 1976: 318 cases of which 280 were fatal - between 1 September and 24 October in the area of Yambuku, Zaire 1976: 284 cases of which 141 were fatal - in Nzara, Maridi, Tembura and Juba, Sudan between June and November; 1977: 1 fatal case in Tandala, Zaire 1979: 34 cases of which 22 were fatal - in Nzara and Yambio, Sudan between 31 July and 6 October. 1994: 1 case, non-fatal - Tai, C“te d'Ivoire, in November. 1995: 316 cases of which 245 were fatal - in Kikwit, Zaire between January- June 1995. 1996: 1 non fatal case from Plibo, Liberia 1996. 1996-97: 37 cases of which 21 were fatal - Makokou, Gabon, between January and March, 60 cases of which 45 were fatal - Boou‚, between August 1996 and January 1997 1996: 1 fatal case in South Africa (epidemiologically linked with the outbreak in Gabon), November 1996