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LONDON, July 31 (Reuters) -- The world is for the first time on the verge of being able to protect humans against Ebola, the World Health Organization (WHO) said on Friday, as data from a trial in Guinea showed a vaccine was 100-percent effective.
Initial results from the trial, which tested Merck and NewLink Genetics' VSV-ZEBOV vaccine on some 4,000 people who had been in close contact with a confirmed Ebola case, showed 100-percent protection after 10 days.
The results were described as "remarkable" and "game changing" by global health specialists.
"We believe that the world is on the verge of an efficacious Ebola vaccine," WHO vaccine expert Marie Paule Kieny told reporters in a briefing from Geneva.
The vaccine could now be used to help end the worst recorded outbreak of Ebola, which has killed more than 11,200 people in West Africa since it began in December 2013.
WHO Director-General Margaret Chan said the results, published online in the medical journal The Lancet, were an "extremely promising development."