Health officials in the Democratic Republic of Congo say they do not believe a second case of Ebola in the eastern city of Goma is linked to the first.

In a BBC Newsday interview, Dr Emanuele Capobianco of the Red Cross said this suggests there are more chains of transmission, which would make it harder to stop the virus spreading.

Goma - a bustling city of about two million people - is on the border with Rwanda.

There have been more than 2,500 cases of Ebola in DR Congo since the outbreak began a year ago.

Dr Capobianco said the immediate response to this latest case had been good and the Ebola vaccine would be given to people who may have come into contact with the patient - a man in his 40s.

Women are seen washing their hands at an Ebola screening station as they enter the Democratic Republic of the Congo from Rwanda on July 16, 2019 in Goma