Survivors of the Ebola virus often have serious visual problems, and a new study helps explain why.
Health authorities do not expect a repeat of the West African outbreak, which claimed 11,000 lives.
The vaccine as one important tool in controlling future outbreaks of Ebola.
Data from a trial in Guinea showed a vaccine was 100 percent effective.
The vaccine led the patient to develop antibodies against the Ebola virus.
Humanitarian organization Médecins Sans Frontières will host trials by European researchers of two drugs and blood plasma therapy at its treatment centers in countries most affected by the Ebola outbreak.
"At least 5 vaccines are following closely and will be in the clinic in the first months of 2015," the WHO's Marie-Paule Kieny told reporters.
Twenty volunteers will be injected with the experimental vaccine beginning next week
The WHO's ethics committee decided that untested Ebola treatments and vaccines can and should be used to treat patients in the current outbreak.