 
 <prompt> Wetin happun towards di end of di 15th year of di century wey dem sabi as di 2000's? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Nigeria 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 achievement happen for December 2014, wen dem talk say Nigeria 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 life, and cure dem of dia sickness. Nigeria become di second African kontri wey don successfully do dis surgery. For di 2014 ebola outbreak, Nigeria be di first kontri wey fit contain and eliminate di Ebola wahala wey dey worry three oda kontris for West Africa, di unique method of contact tracing wey Nigeria use become effective method wey oda kontris like United States later use when dem see ebola threat. 