http://www.who.int/mediacentre/news/releases/2016/ebola-zero-liberia/en/
14 January 2016
Today WHO declares the end of the most recent outbreak of Ebola virus disease in Liberia and says all known chains of transmission have been stopped in West Africa. But the Organization says the job is not over, more flare-ups are expected and that strong surveillance and response systems will be critical in the months to come.
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This date marks the first time since the start of the epidemic 2 years ago that all 3 of the hardest-hit countries—Guinea, Liberia and Sierra Leone—have reported 0 cases for at least 42 days. Sierra Leone was declared free of Ebola transmission on 7 November 2015 and Guinea on 29 December.