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October 10, 2023 Polio Update

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: 14
Others: 5

Summary of new poliovirus cases and positive environmental samples:
Afghanistan: six WPV1 positive environmental samples
Pakistan: one WPV1 case and four WPV1 positive environmental samples
Algeria: one cVDPV2 positive environmental sample
Cameroon: one cVDPV2 positive environmental sample
Chad: one cVDPV2 case
DR Congo: 12 cVDPV1 cases, seven cVDPV2 cases and six cVDPV2 positive environmental samples
Guinea: two cVDPV2 cases and one cVDPV2 positive environmental sample
Nigeria: two cVDPV2 cases and five cVDPV2 positive environmental samples

Afghanistan: No wild poliovirus type 1 (WPV1) case was reported this week. There have been six WPV1 cases reported this year, from Nangarhar, Kabul and Kandahar provinces

 Pakistan: One WPV1 case was reported this week and there have been three WPV1 cases reported this year.

Officially reported WPV1 and cVDPV cases as of October 10, 2023:
Wild poliovirus (WPV)
Total global WPV1 cases in 2023: 9 (compared with 32 for the same period in 2022)

Total global WPV1 cases in 2022: 30
Circulating vaccine-derived poliovirus (cVDPV) cases
Total global cVDPV cases in 2023: 304 (compared with 399 for the same period in 2022)

Total global cVDPV cases in 2022: 876

Most recently reported WPV1 case: September 13, 2023, in Pakistan