The head of the World Health Organisation (WHO) on Tuesday expressed concern at the speed and scale of the Ebola outbreak in central Africa — declared a “continental” emergency — as the number of deaths in the Democratic Republic of Congo (DRC) jumped to 131. The toll from the Ebola outbreak in the DRC has risen to an estimated 131 deaths from 513 suspected cases, health minister Samuel Roger Kamba said. There has also been one death in neighbouring Uganda.