http://www.washingtonpost.com/news/morning-mix/wp/2014/04/07/the-african-pandemic-that-keeps-getting-worse/?tid=hp_mm
"Then there’s the fact that Ebola deaths are particularly gruesome. The disease comes from an infected animal –
most likely the fruit bat, which infects monkeys, apes, pigs and,
finally, humans. The disease is not airborne, but spreads through blood,
secretions or other bodily fluids. Its early symptoms include fever and
intense weakness, WHO says, then deepens with bouts of diarrhea, vomiting, and internal and external bleeding."