Changes in the epidemiology of acute mastoiditis according to the implementation of pneumococcal vaccination in a Spanish population Ángela Manzanares; David Aguilera-Alonso; María Escobar; Sara Vigil-Vázquez; Emilia Cercenado; Jesús Saavedra-Lozano;

Retrospective study of acute mastoiditis in children in Spain attended in a Pediatric Emergency department Paula García-Sánchez; Belén Parra Rodríguez; Rosario López López; Miguel Ángel Molina Gutiérrez; Marta Bueno Barriocanal; María de Ceano-Vivas la Calle;

Streptococcus pyogenes infections in Spanish children before and after the COVID pandemic. Coming back to the previous incidence María de Ceano-Vivas; Miguel Ángel Molina Gutiérrez; Isabel Mellado-Sola; Paula García Sánchez; David Grandioso; Cristina Calvo;