It is the name of a river that remains in ancient Zaire (today Congo). It is a tributary of the Mongala River and therefore of the Congo. It is the place where a virus transmitted from bats to humans was first detected. It is the simplified name for an infectious disease caused by a virus of the genus Ebolavirus. This disease is caused by the Ebola virus and is known as Ebola Virus Disease (EVD) or Ebola hemorrhagic fever (FHE).