Summary of new WPV and cVDPV viruses this week (AFP cases and ES positives):
Afghanistan: one WPV1 positive environmental sample and 26 cVDPV2 cases
Pakistan: five WPV1 positive environmental samples
Nigeria: one cVDPV2 case and two cVDPV2 positive environmental samples
Guinea: seven cVDPV2 cases
Liberia: two cVDPV2 positive environmental samples
Sierra Leone: three cVDPV2 cases