The "national hero" chief doctor leading the fight against the deadly Ebola virus outbreak in Sierra Leone has himself been infected with the disease, the president's office has announced.
Sheik Umar Khan, a 39-year-old virologist who is personally credited with treating more than 100 Ebola victims, has now been admitted to a treatment ward at the heart of the outbreak in Kailahun.
According to the latest data from the World Health Organisation, the virus has killed more than 600 people across Guinea, Liberia and Sierra Leone - including 19 new deaths in just the four days prior to Saturday's report.
There is no vaccination, specific treatment or cure for Ebola, which has in the past killed up to 90 per cent of those infected. The mortality rate of the present outbreak currently stands at around 60 per cent.
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In the statement from the president's office, the Health Minister Miatta Kargbo said she was in tears when she heard the news about Dr Khan. She described him as a "national hero" and pledged to do "anything and everything in my power to ensure he survives".
Nevertheless, Khan told reporters he was worried about the prospect of contracting Ebola. "I am afraid for my life, I must say, because I cherish my life," he said in an interview, showing no signs of ill health at the time.
"Health workers are prone to the disease because we are the first port of call for somebody who is sickened by disease. Even with the full protective clothing you put on, you are at risk."