The likelihood of the deadly Ebola virus re-emerging in West Africa has been put at around 50 per cent by the United Nations.

Over 11,000 people have died in an outbreak of the disease mainly in Guinea, Liberia and Sierra Leone.

Liberia has been declared Ebola-free and cases have been declining in the two other worst affected countries.

But Peter Graaff, the UN Secretary-General’s Special Representative for the UN Mission for Ebola Emergency Response (UNMEER) is warning against complacency.

Daniel Dickinson has been speaking to him and began by asking for an update on the situation in West Africa.

Duration: 3'21"