16 Jan 2015
The goal of reaching zero new cases of the deadly Ebola disease in West Africa is achievable according to the UN Special Envoy, David Nabarro.
Over 21,000 people have caught the disease and almost 8,500 have died in the worst affected countries, Guinea, Liberia and Sierra Leone.
Mr Nabarro has recently visited the three countries.
Mark Hudson began by asking him for an update on the outbreak.