IN LATE AUGUST, the independent Africa Regional Certification Commission for Polio Eradication announced the elimination of wild poliovirus on the African continent. The last wild cases of the disease, which can cause debilitating paralysis and death, were found in the state of Borno in northeast Nigeria during the summer of 2016. Following a difficult few years in which the Global Polio Eradication Initiative suffered from a surge of cases in Pakistan and Afghanistan and the worldwide spread of cases associated with mutations of the polio vaccine, eliminating wild polio in Africa would be a stunning achievement and significant milestone. It now appears to be a done deal.
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