A UK military healthcare worker with ebola has been medically evacuated from Sierra Leone, according to Public Health England.
The woman, believed to be a nurse, is being transported in a specially-equipped military plane and will be treated in the special high level isolation unit at the Royal Free Hospital in North London.
Four other military healthcare workers identified via contact tracing are also the subject of precautionary monitoring, said PHE.
Two of them are returning on the same military plane as the infected individual and will be monitored for any symptoms for the remainder of their incubation period.
The other two are currently being assessed in Sierra Leone. If a decision is made to transport them to the UK, they will be taken to Royal Victoria Infirmary in Newcastle.
Dr Jenny Harries, ebola incident lead at Public Health England, said: “We can confirm that all the appropriate support is being offered to these individuals.
“Our thoughts are with all the healthcare workers, and their families, affected at this time,” added.
The individual tested positive for ebola was exposed to the virus in a frontline care setting in Sierra Leone.
She is the third UK health worker to have contracted the disease while in Africa. Nurses Will Pooley and Pauline Cafferkey both made full recoveries after being treated at the Royal Free.
There are between 600 and 700 Ministry of Defence personnel currently deployed in Sierra Leone to help with the outbreak.