A positive case of Ebola virus has been identified in France in a doctor travelling back from the Democratic Republic of Congo (DRC), the French Ministry of Health said Wednesday.

The individual, who has not been identified, returned from a humanitarian mission in one of the virus transmission zones in the DRC and was taken into care at a specialised facility in France.

The person is in stable condition, the ministry said.

The Congolese health ministry said on Wednesday there are 1,094 confirmed cases of Ebola, including 277 confirmed deaths.

The Ebola outbreak caused by the rare Bundibugyo virus, which has no vaccines or treatment, has been the worst ever in terms of case numbers in its first month.

Officials admit there could be far more cases they don’t know about and the peak of the outbreak, which was declared May 15, could still lie ahead.