FOX NEWS: Africa now free of wild poliovirus, but polio threat remains

Africa now free of wild poliovirus, but polio threat remains



Health authorities on Tuesday declared the African continent free of the wild poliovirus after decades of effort, though cases of vaccine-derived polio are still sparking outbreaks of the paralyzing disease in more than a dozen countries.

via FOX NEWS https://ift.tt/2QktoBE