A Swiss woman being treated for Ebola in Nigeria was flown to Switzerland with her husband on Monday. The Associated Press and CNN reported the transfer. Nigerian Health Minister Muhammad Pate said she was the country's first case in the current outbreak and left Abuja with his approval.

Her condition had improved a great deal. She was stable, awake, and able to speak, Pate said, while warning she could still spread the virus under strict rules. Her husband, a Swiss diplomat in Nigeria, has shown no symptoms. Switzerland's public health office said the couple arrived Monday on a medical flight.

The woman was being treated at Geneva University Hospital, while her husband was in isolation at Zurich University Hospital. Nigerian officials kept watching 52 people who had been near her. No other Nigerian cases were listed on the early pages.

Cross-border medical flights for these viruses follow tight safety rules. Contact checks in Abuja remain the main near-term control step. The pages did not name the patient.

What we know: Nigeria's first current-outbreak Ebola patient was flown to Switzerland with her husband.
What we don't: When either patient will leave isolation, and whether any contacts will test positive.