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Polio this week

SAGE report and recommendations published

The final report and recommendations from the March meeting of the Strategic Advisory Group of Experts on immunization (SAGE) have been published.  On polio eradication, SAGE had taken stock of progress toward eradication and examined the critical decisions shaping the polio endgame. Informed by key analysis of the SAGE Polio Working Group from February, discussions covered programme performance and governance, planning for eventual bivalent OPV cessation, advances in novel OPV and next-generation IPV manufacturing, and how evolving vaccine strategies can best protect children while safeguarding a polio-free future. The group also began formulating recommendations on the optimal role of IPV and bOPV in routine immunization as the world prepares for the final phase of eradication.

UNICEF ExD video message on delivering aid to most vulnerable children of the world

Watch this video by UNICEF Executive Director Catherine Russell, highlighting why it is so critical to reach the most vulnerable children with life-saving health interventions, including polio vaccines.

Summary of new polioviruses this week: 

  • Pakistan:  four WPV1-positive environmental samples
  • Malawi:  one cVDPV2-positive environmental sample
  • Nigeria:  two cVDPV2 cases and one cVDPV2-positive environmental sample
  • South Sudan:  two cVDPV2-positive environmental samples
Country updates as of 10 June 2026

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

  • No WPV1 cases were reported this week (most recent case:  7 April 2026).  The total number of cases in 2025 is 31. The total number of cases in 2026 is three.
  • Four WPV1-positive environmental samples were reported this week, from Balochistan and Khyber Pakhtunkhwa, collected in early May 2026 (most recent positive environmental sample:  12 May 2026).

  • No cVDPV2 case was reported this week.  There is one case reported in 2025 (onset of paralysis on 22 December 2025).
  • One cVDPV2-positive environmental sample was reported this week, from Central province, collected on 20 April 2026 (most recent positive environmental sample).

  • Two cVDPV2 cases were reported this week, from Adamawa and Kwara, with onsets of paralysis on 28 April 2026 and 8 May 2026 (most recent case).  The total number of cVDPV2 cases reported in 2025 is 66.  The total number of cVDPV2 cases reported in 2026 is 27. 
  • One cVDPV2-positive environmental sample was reported this week, from Kano, collected on 13 May 2026 (most recent positive environmental sample).
  • No cVDPV3 cases were reported this week.  The total number of cVDPV3 cases in 2025 is seven.  The total number of cVDPV3 cases in 2026 is six (most recent case:  25 April 2026).

  • No cVDPV1 case was reported this week.  There are four cVDPV1 cases reported in 2026 (most recent case:  11 April 2026).
  • Two cVDPV2-positive environmental samples were reported this week, from Juba, Central Equatoria, collected on 14 April 2026 and 12 May 2026 (most recent positive environmental sample).