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Polio this week

Closing the final gaps: WHA discussions to highlight the path to a polio-free world

At this year’s World Health Assembly, to be held next week in Geneva, Switzerland, Member States and partners will focus not only on progress made, but on what remains to be done: closing the final gaps in access, vaccination coverage and resources to achieve a polio-free world.  Delegates will also look ahead to the steps required to sustain eradication, and how we can leverage polio investments to support stronger, more resilient and equitable health systems.  To facilitate discussions, both on the eradication effort and on the new Sustaining a Polio-free World strategy, the Secretariat has prepared a comprehensive report on the effort, available here.

Summary of new polioviruses this week:

  • Pakistan:  nine WPV1-positive environmental samples
  • DR Congo:  three cVDPV2 cases
  • Ethiopia:  four cVDPV1 cases
  • Nigeria:  six cVDPV2 cases
  • Sudan:  one cVDPV2 case
Country updates as of 13 May 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.
  • Nine WPV1-positive environmental samples were reported this week, from Sindh, Balochistan, Punjab and Khyber Pakhtunkhwa, collected in April 2026 (most recent positive environmental sample:  14 April 2026).

  • No cVDPV1 case was reported this week.  The number of cVDPV1 cases from 2025 is one (onset of paralysis: 25 June 2025).
  • Three cVDPV2 cases were reported this week, from Maniema, with onsets of paralysis on 19, 22 and 26 March 2026.  The number of cVDPV2 cases in 2025 is six.  The number of cVDPV2 cases in 2026 is nine (most recent case:  26 March 2026).

  • Four cVDPV1 cases were reported this week, from Gambella, with onsets of paralysis in February and March 2026 (most recent case:  9 March 2026).  These cases are genetically linked to cVDPV1 cases reported this year from South Sudan.
  • No cVDPV2 case was reported this week. The total number of cases reported in 2025 is 40 (most recent case: 7 October 2025).

  • Six cVDPV2 cases were reported this week, from Jigawa, Zamfara, Niger and Kaduna, with onsets of paralysis in March and April 2026.  The total number of cVDPV2 cases reported in 2025 is 66.  The total number of cVDPV2 cases reported in 2026 is 23 (most recent case:  17 April 2026). 
  • No cVDPV2-positive environmental sample was reported this week (most recent positive environmental sample:  6 April 2026).
  • No cVDPV3 cases were reported this week. The total number of cVPDV3 cases in 2025 is seven.  The total number of cVDPV3 cases in 2026 is three (most recent case:  29 March 2026).

  • One cVDPV2 case was reported this week, from Central Darfur, with onset of paralysis on 14 December 2025.  There have been 13 cases reported for 2025.  There is one case reported for 2026 (most recent case:  20 January 2026).
  • No cVDPV2-positive environmental sample was reported this week (most recent positive environmental sample:  28 February 2026).