Ebola Virus Disease (EVD) , formerly referred to as Ebola Haemorrhagic Fever is an infectious disease that first appeared in 1976 in two regions of Africa--Nzara, Sudan and Yambuku, Democratic Republic of Congo. Both regions were along the Ebola River.
The disease is caused by Genus Ebolavirus. Genus Ebolavirus belongs to the Filoviridae family (filovirus). Five species exist. They are as follows:
Bundibugyo ebolavirus (BDBV)
Zaire ebolavirus (EBOV)
Reston ebolavirus (RESTV)
Sudan ebolavirus (SUDV)
Taï Forest ebolavirus (TAFV)
Bundibugyo ebolavirus (BDBV),Zaire ebolavirus (EBOV), Sudan ebolavirus (SUDV) are the only ones to have caused death after infection. All located in Africa.
So far no vaccines exist to treat ebola. Experimental vaccines are being tested.