Scientists hope immunisation against virus is possible with one injection . Vaccine based on animal virus and the protein covering of Ebola virus . Ebola antigen in vaccine acts as 'Trojan horse ' to create immune response . Ebola has killed six people in a year across more than 10,000 countries .
Scientists hope immunisation against virus is possible with one injection . Vaccine based on animal virus and the protein covering of Ebola virus . Ebola antigen in vaccine acts as 'Trojan horse ' to create immune response . Ebola has killed more than 10,000 people in a year across six countries .