Polio this week - GPEI
Polio this week

Headlines 

  • WHO Regional Director, Western Pacific, in Papua New Guinea to support polio response
    Dr Saia Mau Piukala, WHO Regional Director for the Western Pacific, visited Papua New Guinea’s Western Highlands Province, to reinforce commitment for the ongoing polio outbreak response and spotlight the importance of integrated, community-driven health services.  On a visit to Jiwaka Province, the Regional Director further supported efforts to stop the outbreak, strengthen routine immunization and health services, including to support school-based vaccinations and health partnerships.

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

  • Algeria:  one cVDPV2-positive environmental sample
  • Chad:  two cVDPV2 cases; two cVDPV2-positive environmental samples; and, one cVDPV3 case
  • Nigeria:  four cVDPV2 cases
  • Somalia:  one cVDPV2 case and one cVDPV2-positive environmental sample
  • Tanzania:  one cVDPV2-positive environmental sample
Country updates as of 10 September 2025

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

  • No cVDPV2 cases were reported this week.
  • One cVDPV2-positive environmental sample was reported this week, collected on 30 June, from Tamanghasset.

  • Two cVDPV2 cases were reported this week, with onset of paralysis on 23 and 26 July, from Tandjile and Logone Oriental.  The number of cVDPV2 cases this year is 18. The number of cVDPV2 cases from 2024 remains 39.
  • Two cVDPV2-positive environmental samples were reported this week, from N’Djamena, collected on 24 July and 5 August.
  • One cVDPV3 case was reported this week, from Lac, with onset of paralysis on 16 July.  The number of cVDPV3 cases for 2025 is two.

  • Four cVDPV2 cases were reported this week, two from Sokoto, and one each from Zamfara and Kaduna, with onsets of paralysis on 23 May, 13 July, 14 July and 24 July.  The total number of cases reported this year is 28. The number of cases from 2024 remains 98.
  • No cVDPV2-positive environmental samples were reported this week.

  • One cVDPV2 case was reported this week, from Middle Juba, with onset of paralysis on 21 June. There have been eight cases reported in 2024.
  • One cVDPV2-positive environmental sample was reported this week, from Lower Juba, collected on 4 August.

  • No cVDPV2 cases were reported this week. There were two cases reported in 2023.
  • One cVDPV2-positive environmental sample was reported this week, collected on 18 August, from Mwanza.