FREETOWN, Sierra Leone (AP) — Another doctor from Sierra Leone who has tested positive for Ebola will be evacuated for medical treatment, an official said Thursday, making her the first citizen of a hard-hit country to be treated abroad.

Dr. Olivette Buck is the fourth Sierra Leonean doctor to contract the disease — and the three others all have died. Arrangements are being made to send her to another country for better treatment, said Health Ministry spokesman Sidie Yahya Tunis without specifying further.