Congo River mentioned in 1535. Abraham Ortelius in his world map of 1564 labeled as "Manicongo" the city at the mouth of the river. The tribal names in "Kongo" possibly derive from a word for a public gathering or tribal assembly. The modern name of the Kongo people or "Bakongo" was introduced in the early 20th century. The name "Zaire" is from a Portuguese adaptation of a Kikongo word, ("river"), a truncation of ("river swallowing rivers"). The river was known as "Zaire" during the 16th and 17th centuries; "Congo" seems to have replaced "Zaire" gradually in English usage during the 18th century,
Zaire ebolavirus became extinct. As the number of susceptible hosts declines, so does the effective population size and its genetic diversity. This genetic bottleneck effect has implications for the species' ability to cause Ebola virus disease in human hosts. "Zaire ebolavirus -"Makona variant caused the 2014 West Africa outbreak. The outbreak was characterized by the longest instance of human-to-human transmission of the viral species. Pressures to adapt to the human host were seen at this time, however, there were no phenotypic changes in the virus (such as increased transmission, increased immune evasion by the virus) were seen. Zaire ebolavirus The species Zaire