Health workers say an experimental vaccine may help to stop the spread of Ebola virus disease in the Democratic Republic of Congo. The vaccine is called V920. The drug maker Merck has shipped about 8,600 doses of V920 to the northeastern DRC. The World Health Organization reported on Tuesday that the virus has infected over 50 people in the area. It said the Ebola outbreak is responsible for at least 27 deaths. Experts have warned this outbreak could be as deadly as the one that hit West Africa several years ago.