Pauline Cafferkey

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FILE - In this Saturday, Jan. 1, 2015 file photo, Pauline Cafferkey, a nurse who contracted Ebola while working in Sierra Leone, smiles in the Royal Free Hospital in London. London’s Royal Free Hospital says a nurse who recovered from Ebola last year is being treated for an unusual late complication of the infection. A military aircraft flew Pauline Cafferkey from her home in Scotland to London early Friday, Oct. 9, 2015. The hospital says she will now be treated "in the hospital's high-level isolation unit under nationally agreed guidelines." Medical authorities say the risk of Cafferkey transmitting the virus is low, but public health officials in Scotland are monitoring people with whom she had close contact. (Lisa Ferguson/Scotland on Sunday/PA via AP) UNITED KINGDOM OUT - NO SALES - NO ARCHIVES