Polio This Week | GPEI | Most Recent News | Countries
Polio this week

Niger steps up efforts to reach every child with polio vaccines, even in the most challenging settings

Through a combination of fixed, mobile and outreach strategies, health teams have vaccinated hundreds of thousands of children per campaign across diverse locations — from nomadic communities to markets and cross-border areas — while conducting multiple large-scale campaigns to reach zero-dose and under-immunized populations. These coordinated efforts, supported by strengthened surveillance and tailored approaches, mark a decisive step forward in closing immunity gaps and advancing toward a polio-free future.  More.

Summary of new polioviruses this week:

  • Afghanistan:  two WPV1 cases
  • Pakistan:  one WPV1-positive environmental sample
  • Namibia:  one cVDPV2-positive environmental sample
  • South Sudan:  two cVDPV1 cases
  • Sudan:  four cVDPV2 cases and two cVDPV2-positive environmental samples
Country updates as of 15 April 2026

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

  • Two WPV1 cases were reported this week, from Kandahar and Hilmand, with onsets of paralysis on 17 February 2026 (most recent cases).  The total number of cases in 2026 is three.  The total number of cases in 2025 is 21. 
  • No WPV1-positive environmental samples were reported this week (most recent positive environmental sample: 23 February 2026).

  • No WPV1 case was reported this week. The total number of cases in 2025 is 31. The total number of cases in 2026 is one (onset of paralysis: 10 February 2026).
  • One WPV1-positive environmental sample was reported this week, from Balochistan, collected on 10 March 2026 (most recent positive environmental samples).

  • One cVDPV2-positive environmental sample was reported this week, collected from Khomas on 3 March 2026 (most recent positive environmental sample).

  • Two cVDPV1 cases were reported this week, from Upper Nile, with onsets of paralysis on 6 February 2026 and 15 February 2026 (most recent case).  There are two cVDPV1 cases reported in 2026. 

  • Four cVDPV2 cases were reported this week, from East Darfur, West Darfur, Central Darfur and South Darfur, with onsets of paralysis in 2025.  There have been 11 cases reported for 2025 (most recent case:  8 October 2025).
  • Two cVDPV2-positive environmental samples were reported this week, collected from Red Sea, on 28 February 2026 (most recent positive environmental sample).