By: Caroline Pane Image Credit: United Nations Photo. CC-BY-NC-ND. A 3-year-old in Malawi has the first case of wild-type poliovirus in Africa in 5 years,
By: Caroline Pane Image Credit: United Nations Photo. CC-BY-NC-ND. A 3-year-old in Malawi has the first case of wild-type poliovirus in Africa in 5 years,