Africa has gone three years without a case of wild polio being detected, the World Health Organization said on Wednesday, a significant milestone in the quest to eradicate the disease. The continent's last case of polio caused by the wild virus was detected on 21 August 2016 in Nigeria. Africa is expected to be certified free of wild polio by early next year following an independent evaluation process, however vaccine-derived cases of the disease still pose a challenge. "We are confident that very ...
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Added August 21, 2019