Ebola crisis: Scientists search for vaccination

Work is being carried out in laboratories across the world to find a vaccine to protect people against the spread of Ebola.

At the Institut Pasteur, a French foundation which has previously found cures for some of the world's deadliest viruses, scientists are working to prevent future outbreaks of the disease.

The BBC's Tulip Mazumdar spoke to Prof James Di Santo, the institut's professor of immunology, about the progress being made to discover a vaccination for Ebola.