Symptoms of Ebola infection include fever, fatigue, muscle pain, headache, and sore throat, followed by vomiting, diarrhoea, rash, and internal and external bleeding.
The World Health Organisation (WHO) estimates that, on average, Ebola kills five in every 10 infected individuals.
There are six known types of the Ebola virus. Four of them, Zaire, Bundibugyo, Sudan, and Taï Forest, are known to cause disease in humans.
The Reston and Bombali strains primarily affect non-human primates.
Unlike the more common Zaire Ebola virus, there is no approved vaccine for the Sudan strain.
