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Wild Polio Virus Summary:
New wild poliovirus isolates reported this week:
AFP cases: 0
Environment: 3
Others: 0
New cVDPV isolates reported this week:
AFP cases: 16
Environment: 19
Others: 4

Summary of new poliovirus cases and positive environmental samples:
Angola: one cVDPV2-positive environmental sample
Chad: one cVDPV2 case
Cote d’Ivoire: nine cVDPV2-positive environmental samples
Guinea: one cVDPV2 case and one cVDPV2-positive environmental samples
Liberia: one cVDPV2-positive environmental sample
Mali: three cVDPV2 cases
Nigeria: eight cVDPV2 cases and seven cVDPV2-positive environmental samples
Pakistan: three WPV1-positive environmental samples
Somalia: three cVDPV2 cases

Afghanistan: No WPV1 cases and No WPV1 positive environmental samples were reported this past week. There were six WPV1 cases reported last year.

Pakistan: No WPV1 cases and three WPV1 positive environmental samples were reported this past week. There were six WPV1 cases reported last year.

Officially reported WPV1 and cVDPV cases as of (March 6, 2024):
Wild poliovirus (WPV)
Total global WPV1 cases in 2024: 0
Total global WPV1 cases in 2023: 12
Total global WPV1 cases in 2022: 30
Total global WPV1 cases in 2021: 6
Total global WPV1 cases in 2020: 140
Circulating vaccine-derived poliovirus (cVDPV) cases
Total global cVDPV cases in 2024: 16
Total global cVDPV cases in 2023: 517
Total global cVDPV cases in 2022: 878

Most recently reported WPV1 case: October 24, 2023, in Pakistan (4 1/2 months with no new cases)