The World Health Organization chief voiced concern on Tuesday about the "scale and speed" of an Ebola outbreak in the Democratic Republic of Congo which has killed an estimated 131 people.

Some 88 people have died from the highly contagious haemorrhagic fever in the DR Congo, with one death in Uganda, and at least 336 suspected cases.

An Ebola outbreak in the Democratic Republic of Congo has killed more than 80 as authorities warned there was no vaccine for the strain in a crisis that the World Health…