For many months, the World Health Organization has confirmed that the spread of the poliovirus remains a Public Health Emergency of International Concern.
This concern was validated during the last few weeks of 2024, when vaccine-derived poliovirus type 2 (VDPV2) genetically linked to the Nigeria lineage was detected in wastewater samples in 16 cities in five European countries: Spain, Poland, Germany, the United Kingdom, and Finland.
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