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;

Molecular characterization of four Group A Streptococcus causing invasive infection in a short time Alba Bellés Bellés; Pilar Villalón Panzano; Mar Miralbés Torner; Albert Bernet Sánchez;

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;