Top Sierra Leone doctor dies of Ebola

In this July 15, 2014 photo, the Arwa clinic (center) was closed after the doctor got infected by the Ebola virus in the capital city of Freetown, Sierra Leone. Ebola, a hemorrhagic fever that can cause its victims to bleed from the ears and nose, had never before been seen in this part of West Africa where medical clinics are few and far between. The disease has turned up in at least two other countries - Liberia and Sierra Leone - and more than 530 deaths have been attributed to the outbreak that is now the largest on record. (AP Photo/Youssouf Bah)
In this July 15, 2014 photo, the Arwa clinic (center) was closed after the doctor got infected by the Ebola virus in the capital city of Freetown, Sierra Leone. Ebola, a hemorrhagic fever that can cause its victims to bleed from the ears and nose, had never before been seen in this part of West Africa where medical clinics are few and far between. The disease has turned up in at least two other countries - Liberia and Sierra Leone - and more than 530 deaths have been attributed to the outbreak that is now the largest on record. (AP Photo/Youssouf Bah)

FREETOWN, Sierra Leone (AP) — Authorities say the top doctor treating Ebola in Sierra Leone has died from the disease.

Dr. Shek Umar had been hospitalized in quarantine since he contracted the virus that has killed more than 670 people across West Africa this year.

His death Tuesday was confirmed by chief medical officer Dr. Brima Kargbo.

Health workers have been especially vulnerable to contracting Ebola, which is spread through bodily fluids such as saliva, sweat, blood and urine. Two American health workers are currently being hospitalized with Ebola in neighboring Liberia.

The Ebola outbreak is the largest in history with deaths blamed on the disease in Sierra Leone, Liberia, Guinea and also Nigeria.

The disease has no vaccine and no specific treatment, with a fatality rate of at least 60 percent.

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