Ebola Outbreaks (Cont.)

Background on Ebola

Ebola Outbreaks in the 1970s

There were five confirmed Ebola outbreaks during the 1970s.

Year	Ebola subtype	Country	No. of human cases	Percentage of deaths among cases	Ebola Outbreak Details
1976	Ebola-Zaire	Zaire [Democratic Republic of the Congo (DRC)]	318	88%	Occurred in Yambuku and surrounding area. Disease was spread by close personal contact and by use of contaminated needles and syringes in hospitals/clinics. This outbreak was the first recognition of the disease.
1976	Ebola-Sudan	Sudan	284	53%	Occurred in Nzara, Maridi, and the surrounding area. Disease was spread mainly through close personal contact within hospitals. Many medical care personnel were infected.
1976	Ebola-Sudan	England	1	0%	Laboratory infection by accidental stick of contaminated needle.
1977	Ebola-Zaire	Zaire	1	100%	Noted retrospectively in the village of Tandala.
1979	Ebola-Sudan	Sudan	34	65%	Occurred in Nzara. Recurrent outbreak at the same site as the 1976 Sudan epidemic.

(Ebola Outbreaks Continued: Page 3)
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Written by/reviewed by: Arthur Schoenstadt, MD

Last reviewed by: Arthur Schoenstadt, MD

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