| http://www.w3.org/ns/prov#value | - ecedented in many ways, including the high proportion of doctors, nurses, and other health care workers who have been infected.To date, more than 240 health care workers have developed the disease in Guinea, Liberia, Nigeria, and Sierra Leone, and more than 120 have died.WHO said the deadly virus has taken the lives of prominent doctors in Sierra Leone and Liberia, depriving these countries not on
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