Geneva: The weekly number of new Ebola cases registered across Guinea, Liberia and Sierra Leone rose in the last week of January, marking the first hike in 2015, the World Health Organisation has said.

"Weekly case incidence increased in all three countries for the first time this year," the UN health agency said yesterday. During the seven days leading up to February 1, 124 new cases were confirmed across the three west African countries at the epicentre of the devastating outbreak.