Indeed, as the world debates the best way to recover the missing girls, another menace is resurfacing: the World Health Organization recently declared the spread of polio an international public-health emergency, with several African countries now posing an ongoing risk of exporting the disease.
V důsledku tohoto úsilí se pokrytí Afriky imunizací dramaticky zvýšilo z 10% v roce 1980 na 72% v roce 2012.