Prior to 2013, 24 naturally occurring outbreaks of Ebola virus disease affecting humans had been reported. All but one of these outbreaks were confined to four central African countries: Democratic… Click to show full abstract
Prior to 2013, 24 naturally occurring outbreaks of Ebola virus disease affecting humans had been reported. All but one of these outbreaks were confined to four central African countries: Democratic Republic of the Congo (DRC, formerly Zaire), South Sudan (formerly Sudan), Gabon and Uganda. In total
               
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