Polio this week - GPEI
Polio this week

Headlines 

  • New polio tools get green light from global vaccine experts
    At its meeting last week in Geneva, the Strategic Advisory Group of Experts on immunization (SAGE) endorsed two important innovations for polio. It recommended that fractional doses of Sabin-based inactivated polio vaccine (IPV) be used in the same way as fractional doses of Salk-based IPV – helping stretch supply and reach more children.  SAGE also backed the broader rollout of novel oral polio vaccine type 2 (nOPV2) to help stop persistent outbreaks of circulating variant poliovirus type 2 (cVDPV2) in some of the toughest places.  More.

 

Summary of new polioviruses this week, cases and positive environmental isolates:

  • Pakistan:  three WPV1 cases
  • Benin:  one cVDPV2-positive environmental sample
  • Nigeria:  three cVDPV2 cases and two cVDPV2-positive environmental samples
  • Papua New Guinea:  16 cVDPV2-positive environmental samples
Country updates as of 01 October 2025

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

  • Three WPV1 cases, with onsets of paralysis in August were reported this week from Sindh.  The total number of cases this year is 29.  The number of cases for 2024 remains 74.
  • No WPV1-positive environmental samples were reported this week.

  • No cVDPV2 cases were reported this week. There have been three cases in 2025. One case was reported in 2024.
  • One cVDPV2-positive environmental sample was reported this week, from Donga, collected on 2 September.

  • Three cVDPV2 cases were reported this week, from Borno, Kebbi and Zamfara, with onsets of paralysis in May and July.  The total number of cases reported this year is 35. The number of cases from 2024 remains 98.
  • Two cVDPV2-positive environmental samples were reported this week, from Bauchi and Zamfara, collected in May.

  • No cVDPV2 case was reported this week.  There is one case reported from the country in 2025.
  • 16 cVDPV2-positive environmental samples were reported this week, from Morobe, National Capital and Western Highlands, all collected in July.