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Polio this week

Fractional dose IPV in Afghanistan

Click here to view an impactful video of administration of fractional dose IPV (fIPV), using needle-free jet injectors, as part of intensified eradication efforts in Afghanistan.  The country’s polio programme is increasingly using innovative approaches to reach more children and stop virus transmission faster.  Expanded use of fractional-dose inactivated polio vaccine (fIPV) alongside oral polio vaccine (OPV) helps strengthen immunity and accelerate progress toward interruption of transmission.

Summary of new polioviruses this week: 

  • Namibia:  one cVDPV2-positive environmental sample
  • Togo:  one cVDPV2 case
  • United Kingdom (UK):  one cVDPV2-positive environmental sample
Country updates as of 25 March 2026

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

  • One cVDPV2-positive environmental sample was reported this week, collected from Windhoek on 4 February 2026 (most recent positive environmental sample).

  • One cVDPV2 case was reported this week, from Centrale, with onset of paralysis on 20 February 2026 (most recent case).  There are two cases reported in 2026.

  • One cVDPV2-positive environmental sample was reported this week, from London, collected on 2 March 2026 (most recent positive environmental sample).