Ebola virus or Ebola virus disease (EVD), often shortened to Ebola is a very dangerous virus. It belongs to the family Filoviridae and is responsible for a severe disease characterized by the sudden onset of hemorrhagic fever accompanied by other non specific signs and symptoms. "Hemorrhagic" means that the victim will bleed a lot, inside and outside their body. The virus attacks almost every organ and tissue of the human body resulting in multi-organ dysfunction. Out of every 100 people who get Ebola, on average 25 to 90 die. There are four kinds of Ebola virus that can cause the disease. The virus was first found in Sudan. It is found in Africa, with very few cases in Europe and the United States.