A case of Ebola has been confirmed in eastern Democratic Republic of Congo's South Kivu province - hundreds of kilometres from the outbreak's epicentre - the rebel alliance that controls the area says.
The case, in a rural area near the provincial capital Bukavu, signals the spread of an outbreak that experts believe circulated undetected for around two months in Ituri province, several hundred kilometres to the north, before being identified last week.
The outbreak has been linked to 139 deaths, with 600 suspected cases reported in Ituri and North Kivu provinces as of Wednesday, according to the World Health Organisation.
