Ebola Virus Disease is a rare and deadly hemorrhagic fever caused by an infection from one of the Ebola virus strains. Ebola can cause disease in humans and non-human primates (monkeys, gorillas, and chimpanzees).
There are five identified Ebola virus species, four of which are known to cause disease in humans: Ebola virus (Zaire ebolavirus); Sudan virus (Sudan ebolavirus); Taï Forest virus (Taï Forest ebolavirus); and Bundibugyo virus (Bundibugyo ebolavirus). The fifth, Reston virus (Reston ebolavirus), has caused disease in non-human primates, but not in humans.