Polio in Europe: Current Status and Case Data
Polio in Europe remains a low-incidence public health concern, with the WHO European Region certified wild poliovirus-free since 2002. However, circulating vaccine-derived poliovirus (cVDPV) events continue to require surveillance and response. Most countries maintain high routine immunization coverage, but pockets of under-vaccinated populations create residual risk for transmission, especially in areas with low vaccine confidence or mobile populations. The European Centre for Disease Prevention and Control (ECDC) publishes annual vaccine-preventable disease reports that track polio in Europe alongside other enteroviruses, and its latest assessments highlight the importance of maintaining high coverage across all EU and EEA states. Data on acute flaccid paralysis (AFP) surveillance and environmental sewage sampling are core tools used to detect any poliovirus reintroduction early.
Vaccination Coverage, Schedules, and EU Policy
Routine childhood immunization against polio in Europe is delivered through inactivated polio vaccine (IPV) as part of national immunization programs, typically administered as part of the diphtheria-tetanus-pertussis-Hib-hepatitis B combination vaccine. The WHO target for polio vaccination coverage is at least 95% of children receiving three doses of polio-containing vaccine, and most European countries meet or exceed this target at the national level, though subnational coverage can fall below the threshold in some regions. The EU Council Recommendation on strengthened cooperation against vaccine-preventable diseases encourages member states to monitor coverage, identify under-vaccinated groups, and conduct outreach. The European Commission supports vaccination programs through joint procurement mechanisms and funding for disease surveillance networks, while the ECDC provides guidance on maintaining high population immunity to prevent polio in Europe from re-emerging.
Outbreak Response, Surveillance, and Risk Factors
Environmental Surveillance and Rapid Response
Polio in Europe is monitored through a combination of AFP case reporting, laboratory confirmation, and environmental sewage surveillance coordinated by the ECDC and the European Laboratory Network for Polio. When poliovirus is detected in sewage or in an AFP case, rapid response measures include enhanced vaccination campaigns, risk communication, and cross-border coordination with neighboring countries. Recent cVDPV events in the region have prompted targeted supplementary immunization activities in affected areas, often using novel oral polio vaccine type 2 (nOPV2) where appropriate under WHO guidance. The response framework aligns with the Global Polio Eradication Initiative strategies, and countries work with the ECDC and WHO Regional Office for Europe to assess the risk of sustained transmission and implement control measures.
Under-Vaccinated Groups and Cross-Border Risks
Key risk factors for polio in Europe include under-vaccinated communities, mobile and migrant populations, and areas with disrupted health services or vaccine hesitancy. Outbreaks in neighboring regions or the detection of cVDPV in wastewater can quickly elevate the risk for countries with lower coverage in specific subpopulations. The ECDC and member states conduct risk assessments using real-time data on vaccination coverage, population movement, and poliovirus genetics to prioritize vaccination efforts and communication. Maintaining high routine coverage and ensuring equitable access to immunization services are the most effective long-term strategies to prevent polio in Europe from becoming a public health threat again.