Hope for Ebola vaccine in months
A vaccine might be available in large enough quantities by the end of the year to help control West Africa's Ebola outbreak, according to the World Health Organisation.
There is currently no licensed treatment or vaccine for Ebola, although scientists are testing two vaccines.
More than 5,800 people are believed to have been made ill from Ebola in five West African countries.
The outbreak is the first to hit urban areas and it has been difficult to control by the traditional methods of isolating sick people and monitoring everyone they came into contact with.
Previously, experts had said a drug or vaccine was unlikely to be ready in time to help in this outbreak.
Today, the World Health Organisation (WHO) said projected year-end quantities of vaccines could be large enough to have some impact.