GENEVA: The World Health Organisation has formally announced the end of the Ebola outbreak in Liberia, joining Sierra Leone and Guinea — the epicenters of the latest outbreak — as Ebola-free. WHO director Rick Brennan, director emergency risk assessment and humanitarian response, said Thursday was 'a good day, an important day' thanks to the announcement. Brennan noted a 'general acknowledgment' that WHO was slow to react at the start of the outbreak, which has left some 11,000 people dead.