Flexi Says: There are five strains of Ebola virus (EBOV), with the most virulent being Zaire Ebola virus (ZBOV). The average fatality rate of all EBOVs is about 50 percent. ZBOV has exhibited an 83 percent mortality rate in recent outbreaks. EBOV is a zoonotic disease. This means Ebola is transmitted from animals to humans. The animal of origin, or reservoir, is unknown, but bats are suspected.
