This new declaration doesn’t mean Africa is polio-free. Cases remain of the so-called vaccine-derived polio virus, which is a rare mutated form of the weakened but live virus contained in the oral polio vaccine.
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Unknown titlelist of polio-endemic nations, a step toward being declared polio-free, but new cases were then reported in children in the north - a stark example of the difficulties in combating the disease. <span>This new declaration doesn’t mean Africa is polio-free. Cases remain of the so-called vaccine-derived polio virus, which is a rare mutated form of the weakened but live virus contained in the oral polio vaccine. That mutated virus can spark crippling polio outbreaks, and 16 African countries are currently experiencing one- Angola, Benin, Burkina Faso, Cameroon, Central African Republic, Chad, I Summary
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