The doctor who discovered Ebola warns that new deadly viruses are set to hit mankind as medics fear new Disease X. Professor Jean-Jacques Muyembe Tamfum, who helped discover the Ebola virus in 1976, said humanity faces an unknown number of new viruses. He has said there are new and potentially fatal viruses emerging from Africa's tropical rainforests, reports CNN . He added: 'We are now in a world where new ...