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PAYNESVILLE, LIBERIA - OCTOBER 05: A Doctors Without Borders (MSF), health worker in protective clothing carries a child suspected of having Ebola in the MSF treatment center on October 5, 2014 in Paynesville, Liberia. The girl and her mother, showing symptoms of the deadly disease, were awaiting test results for the virus. The Ebola epidemic has killed more than 3,400 people in West Africa, according to the World Health Organization. (Photo by John Moore/Getty Images)
PAYNESVILLE, LIBERIA - OCTOBER 05: A Doctors Without Borders (MSF), health worker in protective clothing carries a child suspected of having Ebola in the MSF treatment center on October 5, 2014 in Paynesville, Liberia. The girl and her mother, showing symptoms of the deadly disease, were awaiting test results for the virus. The Ebola epidemic has killed more than 3,400 people in West Africa, according to the World Health Organization. (Photo by John Moore/Getty Images)

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Sierra Leone Pres. on Ebola: Fighting to get to zero

Sierra Leonean President Ernest Bai Koroma speaks to CNN's Isha Sesay about their ongoing fight against the Ebola virus and efforts to get to zero cases.

Sierra Leone Pres. on Ebola: Fighting to get to zero

Sierra Leonean President Ernest Bai Koroma speaks to CNN's Isha Sesay about their ongoing fight against the Ebola virus and efforts to get to zero cases.