 
 <prompt> Wetin be di epidemic wey dem mention for di article wey happun for di 15th year of di century wey dem sabi as di 2000's? Based on di question wey dey before dis one, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Naija na di only kontri for Africa wey neva fit wipe out polio, wey e dey sometimes carry go give oda African kontris; Polio reduce by 98% between 2009 and 2010. But di big tori happun for December 2014, when dem talk say Naija neva record any polio case for 6 months, and dem dey on track to declare say dem don wipe out polio. For 2012, University of Nigeria launch new bone marrow donor program to help people wey get leukaemia, lymphoma, or sickle cell disease find person wey match dem for bone marrow transplant wey fit save dem from dia condition. Naija become di second African kontri wey don successfully do dis surgery. For di 2014 ebola outbreak, Naija be di first kontri wey fit contain and eliminate di Ebola wahala wey dey scatter three oda kontris for West Africa, di unique method of contact tracing wey Naija use become effective method wey oda kontris like United States later use when dem see ebola threat. 