United Nations, March 15 -- Attacks on Ebola treatment centres in the Democratic Republic of the Congo (DRC), risk reversing the gains made during the current outbreak in the north-east of the country, the head of the UN health agency has said.

Speaking to journalists in Geneva on Thursday amid reports of a fresh attack just hours earlier on a facility in Biena health zone, close to Butembo, Tedros Adhanom Ghebreyesus explained that the deadly disease is just one of many concerns for local people.

"These attacks could reverse the gains we have made," the World Health Organisation (WHO) Director-General said. "We are working to find a balance between protecting patients and staff from attacks by armed groups and building community trust an...