The factsheet explains the importance and reasons for switching from trivalent Oral Polio Vaccine (tOPV) to bivalent Oral Polio Vaccine (bOPV) across the globe. It informs the reader about the National Switch Day, i.e., April 25, 2016 - a day designated to completely withdraw tOPV to replace bOPV in routine immunization and polio campaigns in India and key steps in implementing the SWITCH. It further explicates the responsibilities of medical practitioners, vaccine manufacturers, professional bodies (IMA, IAP, FOGSI etc.), media professional before and after the SWITCH In the end it also provides the important dates in different phases of the SWITCH.