Wild Polio Virus Summary:
New wild poliovirus isolates reported this week:
AFP cases: 0
Environment: 0
Others: 0
New cVDPV isolates reported this week:
AFP cases: 17
Environment: 4
Others: 5

Summary of new poliovirus cases and positive environmental samples:
Cameroon: one CVDPV2 positive environmental sample
Central African Republic: one CVDPV2 case
Chad: two CVDPV2 positive environmental samples
DR Congo: one cVDPV1 case and three CVDPV2 cases
Kenya: two CVDPV2 cases
Nigeria: nine CVDPV2 cases and one positive environmental sample
Somalia: one cVDPV2 case

Afghanistan: No wild poliovirus type 1 (WPV1) cases or positive environmental samples were reported this week. There have been only six WPV1 cases reported this year.

Pakistan: No wild poliovirus type 1 (WPV1) cases and no WPV1 positive environmental samples were reported this week There have been four WPV1 cases reported this year.

Officially reported WPV1 and cVDPV cases as of November 1, 2023:
Wild poliovirus (WPV)
Total global WPV1 cases in 2023: 10 (compared with 28 for the same period in 2022)
Total global WPV1 cases in 2022: 30
Circulating vaccine-derived poliovirus (cVDPV) cases
Total global cVDPV cases in 2023: 341 (compared with 467 for the same period in 2022)
Total global cVDPV cases in 2022: 876

Most recently reported WPV1 case: October 3, 2023, in Pakistan