Ebola Virus Disease (EVD) or Ebola hemorrhagic fever (EHF), better known as just Ebola is a hemorrhagic fever that affects human beings and other primates. It is caused by the Ebola virus. Symptoms of this disease starts to show from two days to three weeks after the virus is contracted. Typical symptoms are fever, muscular pain, sore throat and headaches. These are followed by diarrhoea, vomiting and rashes together with a diminished functioning of the kidneys and the liver. Some people, at this point, start bleeding internally as well as externally. EVD has a high rate of fatality, of about 50%. Between 25 and 90 percent of people affected die of it. Death is often caused by low blood pressure from the loss of fluid, and occurs 6 to 16 days after the first symptoms are seen.