Chad + 26 more

Polio this week as of 30 December 2020

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Summary of new WPV and cVDPV viruses this week (AFP cases and ES positives): 　　

Afghanistan: one WPV1 positive environmental sample and 26 cVDPV2 cases 　　

Pakistan: five WPV1 positive environmental samples 　　

Nigeria: one cVDPV2 case and two cVDPV2 positive environmental samples 　　

Guinea: seven cVDPV2 cases 　　

Liberia: two cVDPV2 positive environmental samples 　　

Sierra Leone: three cVDPV2 cases

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