On March 29, WHO Director-General Margaret Chan announced that the outbreak of Ebola virus disease in countries of west Africa was no longer a Public Health Emergency of International Concern (PHEIC). This decision was taken because, in the opinion of the International Health Regulations Emergency Committee on Ebola, the outbreak is no longer an extraordinary event, there is little risk of international spread, and affected countries have the capacity to rapidly respond to new cases. The Emergency Committee acknowledged that new clusters will continue to occur, but that they are happening at a decreasing frequency.