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Polio this week
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Afghanistan Uses Fractional IPV to Boost Protection and Speed Up Polio Eradication
Afghanistan’s polio programme is increasingly using innovative approaches to reach more children and stop virus transmission faster. One key example is the expanded use of fractional-dose inactivated polio vaccine (fIPV) alongside oral polio vaccine (OPV), strengthening immunity and accelerating progress toward interruption of transmission. Click here to learn more.

Africa in 2025: Key Milestones in the Fight to End Polio
From outbreak response to stronger surveillance and vaccination campaigns, WHO’s African Region made important progress in 2025. This round-up highlights major achievements and activities as countries across the continent continue to intensify efforts to protect every child from polio.  Click here for the full overview.

Summary of new polioviruses this week: 

  • Pakistan:  36 WPV1-positive environmental samples
  • Tanzania:  two cVDPV2-positive environmental samples
Country updates as of 7 January 2026

More information on the countries that have reported cases and/or environmental samples this week.

  • No WPV1 case was reported this week.  The total number of cases this year is 30.  The number of cases for 2024 remains 74.
  • 36 WPV1-positive environmental samples were reported this week, from across the country, collected in November and December.

  • No cVDPV2 cases were reported this week. There were two cases reported in 2023.
  • Two cVDPV2-positive environmental samples were reported this week, from Mwanza, both collected on 16 December.