Summary of new polioviruses this week, cases and positive environmental isolates:

• Pakistan: 12 WPV1-positive environmental samples
• Angola: one cVDPV2 case and one cVDPV2-positive environmental sample
• Chad: one cVDPV2-positive environmental sample
• Côte d’Ivoire: one cVDPV2-positive environmental sample
• Djibouti: three cVDPV2-positive environmental samples
• Ethiopia: one cVDPV2-positive environmental sample
• Nigeria: one cVDPV2 case
• Somalia: four cVDPV2 cases and one cVDPV2-positive environmental sample
• Yemen: five cVDPV2-positive environmental samples