Wednesday, 2 September 2020

Vaccine-derived polio spreads in Africa after defeat of wild virus

Fresh cases of disease linked to oral vaccine seen in Sudan, following outbreak in Chad A new polio outbreak in Sudan has been linked to the oral polio vaccine that uses a weakened form of the virus. News of the outbreak comes a week after the World Health Organization (WHO) announced that wild polio had been eradicated in Africa. Continue reading...
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