Doch es gab auch Rückschläge: In 2016 gab es in Nigeria plötzlich zwei neue Fälle bei Kindern aus einer Gegend, die gerade erst aus der Gewalt der militanten Gruppe Boko Haram befreit worden war.
But there have also been setbacks: in 2016, Nigeria suddenly had two new cases among children from an area that had just been liberated from the militant group Boko Haram.