A sixth individual - a healthcare worker - has been evacuated back to the UK after being potentially exposed to the Ebola virus in Sierra Leone.
The worker is not exhibiting symptoms of the disease and the incident is not related to that of five military healthcare workers brought back in recent days, Public Health England (PHE) said.
Two military healthcare workers who were in close contact with a servicewoman diagnosed with Ebola have returned to the UK for monitoring but are not showing any signs of the disease.
The two, who have not been diagnosed with the disease, travelled on separate EU Medevac flights to Newcastle, before being taken to the city's Royal Victoria Infirmary for monitoring over a 21-day incubation period in line with Ebola response plans.
The pair were identified alongside two other medics as having been in contact with the infected worker.
The two medics and the infected worker were transported back in an RAF plane to the Royal Free Hospital in London yesterday, with the remaining two brought back today.
A spokeswoman for Newcastle Hospitals NHS Foundation Trust said: "This is a precautionary measure. The risk to other patients and wider public from Ebola is very low but all appropriate actions are being taken to protect the public's health."
A US healthcare worker is to be put into isolation after testing positive for Ebola.
The US National Institutes of Health said the patient, who contracted the disease while working in Sierra Leone, will be transported to its high-security containment facility on its Maryland campus via an isolation unit in a chartered aircraft.
The news comes on the same day that a British military healthcare worker was flown back to the UK for specialist treatment after also testing positive for the disease in Sierra Leone.
Two more colleagues of the British healthcare worker who contracted Ebola in Sierra Leone are to be brought home as a 'precautionary measure'.
They had remained in the country today while two others who had also come into contact with the patient returned on the same military flight to the UK.
ITV correspondent Rachel Younger reports.
Footage shows a British Ebola patient who contracted the disease while working in Sierra Leone being moved from an ambulance into London's Royal Free Hospital following her arrival from West Africa today.
Health Secretary Jeremy Hunt said two military personnel who remain in Sierra Leone for monitoring "may well come back to the UK shortly".
The two came into contact with a female British healthcare worker who was infected with Ebola and is now receiving treatment in London.
A British military healthcare worker infected with Ebola has arrived at the Royal Free Hospital in London and is now receiving specialist treatment.
A British military healthcare worker who has tested positive for Ebola is in London to receive specialist treatment.
The female worker left Sierra Leone by military plane earlier today and is being transferred to the Royal Free Hospital.
Four other military healthcare workers are being assessed after they came into contact with the woman.
Two returned to the UK on the same military plane, while the other two are currently being assessed in Sierra Leone
A plane believed to be carrying a British military healthcare worker who tested positive for Ebola in Sierra Leone has landed at RAF Northolt in west London.
The Queen has signed off on plans to award a special medal to Britons who have helped fight Ebola in Sierra Leone, Development Secretary Justine Greening has told MPs.
Ms Greening said Britain has not stood on the sidelines in the fight against the disease, telling MPs the number of new cases each week had dropped from more than 500 to fewer than 60.
In a Commons statement, she said her thoughts were with the family of the British military healthcare worker who has been flown home after being confirmed to have contracted Ebola.