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WASHINGTON, DC – APRIL 17: Sierra Leone President Ernest Bai Koroma attends a meeting about the fight against the Ebola outbreak in West Africa during the World Bank-International Monetary Fund Spring Meetings April 17, 2015 in Washington, DC. The World Bank announced Friday that it would provide an additional US$650 million over the next year to help Guinea, Liberia and Sierra Leone to recover from the social, economic and health impact of the Ebola crisis. (Photo by Chip Somodevilla/Getty Images)