- Ebola causes viral hemorrhagic fever and kills up to 90% of people who catch it
- It's named after the Ebola River in DRC, where one of first outbreaks occurred in 1976
- Symptoms can take between two and 21 days to appear after victim contracts virus
- Humans contract Ebola through contact with bodily fluids of infected animals or humans
(CNN)Here are nine things to know about what the World Health Organization calls "one of the world's most virulent diseases."