Ebola has returned to the Democratic Republic of the Congo, the country where the disease was first discovered.

The government has confirmed that two out of five samples collected by the Institut National de Recherche Biomédicale in Kinshasa have tested positive for the highly infectious disease, which is often fatal if left untreated.

Experts from the World Health Organization, the charity Médecins Sans Frontières and local health authorities have travelled to the affected area, Bikoro in the north west of the country, to co-ordinate the response.

Health facilities in Bikoro are basic and heavily reliant on international organisations for supplies.

Ebola is a constant threat in central and western Africa with the largest ever outbreak of the disease occurring in Sierra Leone, Liberia and Guinea in 2014-15.