This is the most realistic rendering of Ebola virus. It takes Ebola virus only 12 days to get rid of its victim right after the appearance of the first symptoms. EV disease outbreaks have a case fatality rate of up to 90%. The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission. Fruit bats of the Pteropodidae family are considered to be the natural host of the Ebola virus.
More about Ebola virus: http://goo.gl/y5pww
Image credit: Ivan Konstaninov, Visual Science, Moscow