Wild Polio Virus Summary:
New wild poliovirus isolates reported this week:
AFP cases: 1
Environment: 10
Others: 0
New cVDPV isolates reported this week:
AFP cases: 14
Environment: 7
Others: 5

Summary of new poliovirus cases and positive environmental samples:
Afghanistan: four WPV1-positive environmental samples
Pakistan: one WPV1 case and six positive environmental samples
Angola: one cVDPV2 case
Chad: one cVDPV2 case
DR Congo: two cVDPV1 and three cVDPV2 cases
Equatorial Guinea: one cVDPV2-positive environmental sample
Ghana: one cVDPV2-positive environmental sample
Guinea: one cVDPV2-positive environmental sample
Niger: two cVDPV2 cases and three positive environmental samples
Nigeria: four cVDPV2 cases and one cVDPV2-positive environmental sample

Afghanistan: No WPV1 cases and four WPV1 positive environmental samples were reported this past week. There were six WPV1 cases reported last year.
Pakistan: One WPV1 case and six 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 (May 8, 2024):
Wild poliovirus (WPV)
Total global WPV1 cases in 2024: 6
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: 27
Total global cVDPV cases in 2023: 523
Total global cVDPV cases in 2022: 878

Most recently reported WPV1 case: April 20, 2024, in Pakistan.