http://www.itv.com/news/2014-10-17/a-timeline-of-the-spread-of-ebola/

1976 - The first documented person with the Ebola virus, a schoolteacher in Zaire (now the Democratic Republic of Congo) dies 1976-2013 Numerous small outbreaks are recorded in West Africa, with the highest death toll for any one outbreak reaching 250 December 2013 - An unidentified fever claims the lives of a handful of people in Guinea, it is later confirmed they died of Ebola March 2014 - A major Ebola outbreak in Guinea is reported by the World Health Organisation and Liberia identifies its first case. In teh following months the virus spreads to neighbouring Sierra Leone