In a speech to three countries hit hard by an ebola outbreak, the director of the World Health Organization today said that efforts to halt the spread of the deadly virus have not been good enough. “This is an unprecedented outbreak accompanied by unprecedented challenges. And these challenges are extraordinary,” WHO Director General Margaret Chan told leaders of Guinea, Liberia, and Sierra Leone in a speech in Guinea’s capital city Conakry. “This outbreak is moving faster than our efforts to control it. If the situation continues to deteriorate, the consequences can be catastrophic in terms of lost lives but also severe socioeconomic disruption and a high risk of spread to other countries,” she warned.