1 2 "Known Cases and Outbreaks of Ebola Hemorrhagic Fever, in Chronological Order". National Center for Infectious Diseases & Centers for Disease Control and Prevention. 30 August 2014. ↑ http://whqlibdoc.who.int/bulletin/1978/Vol56-No2/bulletin_1978_56(2)_247-270.pdf 1 2 "Ebola haemorrhagic fever in Sudan, 1976".