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September 27, 2024 Polio Update

New wild poliovirus isolates reported this week:
AFP cases: 4

Environment: 0
Others: 1
New cVDPV isolates reported this week:
AFP cases: 6

Environment: 2
Others: 0

Summary of new poliovirus cases and positive environmental samples:
Democratic Republic of the Congo: two cVDPV2 cases
Niger: two cVDPV2 positive environmental samples
Nigeria: four cVDPV2 cases
Pakistan: four WPV1 cases and no positive environmental samples

Afghanistan: No WPV1 cases and no WPV1 positive environmental samples were reported this past week. There were six WPV1 cases reported last year.
Pakistan: Four WPV 1 cases and no 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 (September 27, 2024):
Wild poliovirus (WPV)
Total global WPV1 cases in 2024: 40

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: 171

Total global cVDPV cases in 2023: 528
Total global cVDPV cases in 2022: 878

Most recently reported WPV1 case: September 5, 2024, in Pakistan.