Nigeria Reports 10th Polio Case in 2025

According to the Global Polio Eradication Initiative (GPEI), several countries reported new circulating vaccine-derived poliovirus type 2 (cVDPV2) cases.

Nigeria reported three cases as of March 26, 2025, with onset dates in January and February, bringing its total for 2025 to ten instances. Last year, 98 cVDPV2 cases were reported.

Angola recorded its first case of 2025.

Additionally, GPEI reported that wastewater surveillance in Israel detected a positive cVDPV2 sample collected in the Central province. Genetic analysis indicates that this virus is not related to recent environmental detections in Europe or Gaza, but is most closely linked to a strain that originated in Nigeria's Zamfara state.

Israel is conducting a thorough field investigation to strengthen disease surveillance (including for acute flaccid paralysis cases in health facilities) and identify any residual subnational immunity gaps in this densely populated area.

And in Pakistan, one of two countries in which polio is still endemic, 24 Wild Polio 1-positive environmental samples were recently collected.

The total number of WPV1 cases in 2025 is six. Last year, Pakistan reported 24 WPV1 cases.

As of March 29, 2025, the U.S. CDC recommends international travelers speak with a travel vaccine expert before visiting any polio-risk area.