Another doctor from Sierra Leone has tested positive for Ebola, marking a setback for efforts to keep desperately needed health care workers safe.
The country's government chief medical officer Dr Brima Kargbo confirmed today that a fifth doctor has tested positive.
The other four all have died from the virus that has killed nearly 5,000 across West Africa.
The sick physician has been identified as Dr Godfrey George, medical superintendent of Kambia Government Hospital in northern Sierra Leone.
He was driven to the capital of Freetown after reporting he was not feeling well.
Doctors and nurses have been the most vulnerable to contracting Ebola, as the virus is spread through bodily fluids.
Some 523 health workers have contracted Ebola, and about half of them have died.
Meanwhile, the French government has flown in a Unicef employee infected with Ebola in Sierra Leone for treatment.
The health ministry said the patient was evacuated in a special flight and is undergoing treatment in "high-security isolation" in Begin Army Training Hospital in Saint-Mande, near Paris. The patient's name was not released.
Unicef spokeswoman Marixie Mercado confirmed that a member of its team in Sierra Leone was being treated in France, and "our hope is that our colleague will make a full recovery".
In September, France took in a Doctors Without Borders medic who had Ebola. She later recovered.
France has not had any Ebola cases on its territory, but has been active in the fight against the disease, particularly in Guinea, a former French colony.