The "Switch": Communication Perspectives

As countries work through the polio switch from trivalent OPV (tOPV) to bivalent OPV (bOPV), removing the type 2 what is your feedback on the communication strategy and process associated with that switch? What is going well? What are the challenges? What are we learning for polio? And, more broadly, what are we learning and/or what are the implications for improved routine immunization? Many thanks for sharing your perspectives and insights in support of everyone's work. Warren