There seems to be hope for Ebola victims as the first-ever trial of an Ebola vaccine in Africa shows promising initial results,
Scientists say it is a crucial step as other vaccines have shown lower levels of protection in African populations.
Tests involving Ugandan and American volunteers reveal the vaccine is so far safe and generates an immune response in both populations.
 It provides reassurance for other trials currently underway, they say.
 The Ebola virus has killed more than 6,900 people in the worst-affected countries of Sierra Leone, Liberia and Guinea.
 No proven vaccine exists to prevent people from getting the disease, though several trials are underway.
 The aim of a successful vaccine is to train the immune systems of healthy people to produce antibodies – proteins capable of fighting off any future infections.
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