A Fife nurse who contracted Ebola while working in Sierra Leone is being investigated following allegations about her conduct and that of four colleagues.
Pauline Cafferkey flew back to the UK via Casablanca and London Heathrow before landing at Glasgow Airport late on December 28.
She was admitted to hospital in Glasgow early the next morning after feeling feverish before being diagnosed with the disease, which has left more than 9,000 people dead.
Public Health England (PHE) said it has passed information to the General Medical Council (GMC) and Nursing and Midwifery Council (NMC) after assessing the screening of healthcare workers returning to the UK.
Three nurses and two doctors are now being investigated.
A PHE spokeswoman said: “During our recent assessment of the screening of some returning healthcare workers at Heathrow on December 28th, information emerged which needed to be passed to the General Medical Council and the Nursing and Midwifery Council.
“We are aware that the regulators are now considering the matter and it would be inappropriate for PHE to comment further at this time.”
A NMC spokeswoman said: “Following information we received from Public Health England, we can confirm that we are investigating allegations about the conduct of three nurses.
“It would not be appropriate to comment further at this time.”
A spokeswoman for the GMC said: “Following information received from Public Health England, we can confirm that we are investigating circumstances related to two doctors.
“Our inquiries are at an early stage, and we are not able to provide any more detail at this point.”
Ms Cafferkey, who is from Crossgates but now lives in Cambuslang in South Lanarkshire, had been volunteering with Save The Children at the Ebola Treatment Centre (ETC) in Kerry Town before returning to the UK in December.
She spent more than three weeks being treated at the Royal Free Hospital where she was critically ill for a time, but was released last month after making a full recovery.