Ebola is a disease that affects the way blood clots in the body. Fruit bats are probably the original source of Ebola in humans.
The virus that causes Ebola doesn't spread through the air but is mainly transmitted through contact with an infected person's blood. Ebola is a devastating and deadly disease, and periodic outbreaks in several African countries have sickened thousands of people since the 1970s. The virus gets its name from the Ebola River in the Democratic Republic of the Congo, where it was originally found in humans.