A British health care worker who contracted Ebola in Sierra Leone- the first Briton to catch the deadly virus — was flown home for treatment on Sunday, as the World Health Organization confirmed another foreign medic had caught the disease.

Britain's Foreign Secretary Philip Hammond authorized the repatriation of the male medical worker — whose identity has not been disclosed — after he was analyzed by doctors from Britain and Sierra Leone.

The worst ever outbreak of the hemorrhagic fever has so far killed at least 1,427 people, mostly in Sierra Leone, Liberia and neighboring Guinea. Five deaths have been reported in Nigeria.