EVD was previously known as Ebola hemorrhagic fever. EVD causes a severe and often fatal viral hemorrhagic fever in humans and other nonhuman primates (eg, monkeys). Infection with the Ebola virus is acute, lasting about two weeks.
Since the World Health Organization (WHO) was notified of the first EVD cases in March 2014, the current outbreak in West Africa has involved more cases and deaths than all other outbreaks combined. The WHO declared this recent outbreak a "public health emergency of international concern" on August 8, 2014.
Of the five currently known species of Ebola virus, four cause disease in humans:
|EBOV||Ebola virus|| Yes; highest case-fatality rate|
|Sudan ebolavirus||SUDV ||Sudan virus|| Yes|
|Taï Forest ebolavirus||TAFV||Taï Forest virus||Yes; formerly known as Côte d’Ivoire ebolavirus|
|Bundibugyo ebolavirus||BDBV||Bundibugyo virus||Yes |
|Reston ebolavirus||RESTV||Reston virus||No; has caused asymptomatic infections|