An Ebola patient in Britain who took ZMapp, the experimental drug given to two American aid workers, was released Wednesday from a London hospital, NBC News reported. William Pooley, 29, a volunteer nurse, was the first Briton infected in the West African outbreak. The two Americans, Dr. Kent Brantly and Nancy Writebol, were declared free of Ebola after they took the drug, while the government of Liberia said this week that a doctor there had died of Ebola despite being given it.