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April 8th Polio Update

New wild poliovirus isolates reported this week:
AFP cases: 0

Environment: 0
Others: 0
New cVDPV isolates reported this week:
AFP cases: 4

Environment: 2
Others: 1

Summary of new poliovirus cases and positive environmental samples:
Angola: one cVDPV2 case
Cote d’Ivoire: one cVDPV2 positive environmental sample
Ethiopia: three cVDPV2 cases
Israel: one cVDPV2 positive environmental sample

Afghanistan: No WPV1 cases
and no WPV1 positive environmental samples were reported this past week.
Pakistan: No WPV1 cases and nineteen WPV1 positive environmental samples were reported this past week

Officially reported WPV1 and cVDPV cases as of (April 8, 2025):
Wild poliovirus (WPV)
Total global WPV1 cases in 2025: 7
Total global WPV1 cases in 2024: 99
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 2025: 20

Total global cVDPV cases in 2024: 309

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

Most recently reported WPV1 cases this year: January 27th in Afghanistan and February 11th in Pakistan.

World Immunization week is April 24th – April 30th. This is a critical time to raise awareness about the importance of immunization and the safety and effectiveness of vaccines.