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Health workers prepare to collect the ashes of people that died due to the Ebola virus at a crematorium on the outskirts of Monrovia, Liberia, March 7, 2015 (Credit: AP Photo/ Abbas Dulleh)

Health workers prepare to collect the ashes of people that died due to the Ebola virus at a crematorium on the outskirts of Monrovia, Liberia, March 7, 2015 (Credit: AP Photo/ Abbas Dulleh)