Last week, a two-and-a-half-year-old child in Meghalaya’s West Garo Hills tested positive for poliomyelitis, commonly known as polio. Vaccine-derived poliovirus is a strain of poliovirus that has mutated from the strain originally contained in oral polio vaccines. However, the reporting of vaccine-derived cases does not indicate the return of wild polio, which was officially eradicated in India in 2014, as …
