World Polio Day is observed on 24 th October every year to commemorate and acknowledge global efforts toward a polio-free future and the selfless sacrifices of people working on the frontline to help eradicate polio from every corner of the world. This year, the aim is to ensure that the children saved from polio can reach their full developmental potential by presenting them with many opportunities and that mothers can have positive pregnancy experiences. Owing to global efforts towards polio eradication via oral polio vaccination, wild poliovirus cases are almost near elimination.
However, there is a rare but serious risk of long-term circulation of the attenuated virus in the oral polio vaccines in under-immunized populations. The circulating virus eventually mutates to form circulating vaccine-derived poliovirus (cVDPV) that can cause paralysis in children. cVDPV has emerged as a…
