Liberia confirmed a second case of Ebola on Tuesday just a day after authorities said they had detected a new case of the deadly virus previously thought to have been eliminated from the West African country, a senior health official said, according to Reuters. Liberia, once at the centre of the worst recorded Ebola epidemic in history, was declared Ebola-free by the World Health Organization on May 9 after going 42 days with no new infections. The cross-border outbreak has killed more than 11,200 people since it began in December 2013. Twenty new cases were reported in the week to June 21 in Guinea and Sierra Leone. "We have two confirmed cases today in Liberia," said Dr. Moses Massaquoi, case management team leader for Liberia's Ebola task force. He did not provide details of the new case.