Ebola virus glycoprotein. Computer model showing the structure of a GP2 glycoprotein from the outer envelope of an Ebola virus (EBOV). Ebola causes a severe, and often fatal disease in humans and nonhuman primates (monkeys, gorillas and chimpanzees). Symptoms include fever, fatigue, headache, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.