British Ebola nurse Pauline Cafferkey now 'critically ill'

A British nurse who was successfully treated in January after contracting Ebola in Sierra Leone is now "critically ill" because of rare late complications with the virus, the hospital treating her says.

"We are sad to announce that Pauline Cafferkey's condition has deteriorated and she is now critically ill.

"Pauline is being treated for Ebola in the high-level isolation unit at the Royal Free Hospital," it said in a statement on Wednesday.