Implications of OPV-2 Strain Presence in India & Strategy to Control the Chance of Endemicity

Abstract

On extensive review and synthesis of vaccine trial data & community epidemiological studies. In high transmission rates settings, falling population immunity after OPV cessation will lead to conditions in which OPV & WPVS are capable of causing outbreaks [1]. WHO has officially removed India from the list of countries considered to have never interrupted the transmitted. India has not had a case of polio since 13, January 2011 [2]. India was certified polio free in March 2014 and continues to be so, India continues to remain vigilant against three type of poliovirus. The last polio case due to wide poliovirus in the country was detected on 13 January 2011 [3]