As many of you know, the switch to bOPV has been completed in all 155 countries and territories that were using tOPV. This has been a great achievement that brings us even closer to polio eradication! Based on the country validation reports that WHO received, approximately 140,000 health facilities...

In its January 2015 meeting, the WHO Executive Board called on all Member States to accelerate preparation for a globally coordinated switch from trivalent to bivalent OPV in April 2016. The Board’s request follows the WHO SAGE announcement in October 2014 that preparations are on track for this imp...