|Fact sheet No 103: Ebola Haemorrhagic Fever - Revised December 2000 (WHO, 2000, 3 p.)|
|History and Prevalence|
Revised December 2000
Ebola haemorrhagic fever (EHF) is one of the most virulent viral diseases known to humankind, causing death in 50-90% of all clinically ill cases. The disease has its origins in the jungles of Africa and Asia. Several different forms of Ebola virus have been identified and may be associated with other clinical expressions, on which further research is required.