 Global WPV3 eradication was certified in October 2019, the virus not having been seen since 2012.In addition to the WPV resurgence in Pakistan and Afghanistan, 2019 saw a resurgence of cVDPV, with over 360 cases.The majority of cases were caused by cVDPV2 strains that were able to arise or spread as a consequence of the withdrawal of oPV2 from the standard vaccination regimen.