An imported case of vaccine-derived poliovirus type 2, Spain in the context of the ongoing polio Public Health Emergency of International Concern, September 2021 Chirlaque López, María Dolores and Cabrerizo, María and Guzmán Herrador, Bernardo R. and Masa-Calles, Josefa and Alarcón-Linares, María Ester and Allende, Ana and Aznar Cano, Esteban and Barranco Boada, María Isabel and Cantero Gudino, Elena and Fernández-Balbuena, Sonia and Fernández Dueñas, Ana and Fernández-García, María Dolores and García Hernández, Laura and García Ortúzar, Visitación and López-Perea, Noemí and Martínez-Salcedo, Eduardo and Moreno-Docón, Antonio and Ordobás Gavín, María and Rodero Garduño, Inmaculada and Sierra Moros, Maria José and Simón Soria, Fernando and Limia Sánchez, Aurora and Suárez Rodríguez, Berta, Eurosurveillance, 26, 2101068 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.50.2101068