This updated position paper on polio vaccines replaces the previous 2010 WHO position paper, and summarizes recent developments in the field. It integrates new information related to the addition of a dose of IPV for countries currently using exclusively OPV, in the context of the global switch from trivalent to bivalent OPV. Recommendations on the use of polio vaccines have been discussed on multiple occasions by SAGE, most recently in November 2013; evidence presented at these meetings can be accessed at: http://www.who.int/immunization/sage/previous/en/index.html. 

  • Poliomyelitis