A woman walks past a antiseptic dispenser, placed to be used as a preventive measure against Ebola, at the health minister's office in Abidjan August 11, 2014. The West African Ebola outbreak is the worst in history and the World Health Organization (WHO) said on Friday it represented an international health emergency that will likely continue spreading for months. It said 961 people had died so far during the outbreak and 1,779 had been infected. REUTERS/Luc Gnago (IVORY COAST - Tags: HEALTH)