Past Ebola outbreaks claimed thousands of lives in West Africa and in the Democratic Republic of the Congo (DRC). On May 8th, a new Ebola outbreak was declared in Equateur Province, DRC. This time, WHO and partners have a new tool to fight the outbreak: an Ebola vaccine. This week will mark another important step in the international response to the outbreak. After vaccinating hundreds of people in the city of Mbandaka, WHO and partners are expanding the ring vaccination into more remote areas of the province.