LONDON (AP) — 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. 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. Ebola is transmitted by direct contact with blood or body fluids.

Cafferkey was diagnosed with Ebola in December after returning from Sierra Leone. She was treated at the Royal Free for several weeks and discharged in January.