LONDON (AP) — A British nurse who developed Ebola working in Sierra Leone is facing disciplinary action over allegations she lied about her temperature during health checks on her return.

The Nursing and Midwifery Council alleges that Pauline Cafferkey "allowed an incorrect temperature to be recorded" at Heathrow Airport on Dec. 29, 2014, and intended to conceal from Public Health England staff that she had a temperature higher than 38 Celsius (96 Fahrenheit).

The council said Thursday that a full hearing on the allegations is scheduled for next month. Cafferkey could lose the right to practice.

Cafferkey, now 40, became critically ill shortly after she returned from West Africa at the end of 2014 and was treated in an isolation unit at London's Royal Free Hospital.

She was twice re-hospitalized with complications.