How did Ebola start?

The Ebola virus outbreak that's ravaging West Africa probably started with a single infected person, a new genetic analysis shows. ... U.S. officials announced they'll start the first human trials of a new vaccine next week, the first in a series of small safety tests. read more

Ebola virus disease (EVD), also known as Ebola hemorrhagic fever (EHF) or simply Ebola, is a viral hemorrhagic fever of humans and other primates caused by ebolaviruses. Signs and symptoms typically start between two days and three weeks after contracting the virus with a fever, sore throat, muscular pain, and headaches. read more

The Ebola virus outbreak that’s ravaging West Africa probably started with a single infected person, a new genetic analysis shows. This West African variant can be traced genetically to a single introduction, perhaps a person infected by a bat, researchers report in the journal Science. read more

Myths about where the Ebola virus came from -- including some that say the virus was brought to African regions by health care workers -- have hurt the ability of workers to respond to the outbreak. read more