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August 12th Polio Update

New wild poliovirus isolates reported this week:
AFP cases: 5

Environment: 31
Others: 6
New cVDPV isolates reported this week:
AFP cases: 5

Environment: 6
Others: 2

Summary of new poliovirus cases and positive environmental samples:
Afghanistan: two WPV1 cases and 31 positive environmental samples
Chad: no cVDPV2 cases and one positive environmental sample

DR Congo: two cVDPV2 cases
Ethiopia: one cVDPV2 case
Liberia: one cVDPV2 positive environmental samples
Nigeria: one cVDPV2 case
Pakistan: three WPV1 cases and 31 WPV1-positive environmental samples
Sierra Leone: four cVDPV2-positive environmental samples
South Sudan: one cVDPV2 case

Afghanistan: Two WPV1 cases and no WPV1 positive environmental samples were reported this past week. There were six WPV1 cases reported last year.
Pakistan: Three WPV1 cases and 31 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 (August 6, 2024):
Wild poliovirus (WPV)
Total global WPV1 cases in 2024: 23

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: 132

Total global cVDPV cases in 2023: 526
Total global cVDPV cases in 2022: 878

Most recently reported WPV1 case: July 16, 2024, in Pakistan.