Sustained increase of paediatric invasive Streptococcus pyogenes infections dominated by M1UK and diverse emm12 isolates, Portugal, September 2022 to May 2023

• Autor(es): Gouveia, Catarina ; Bajanca-Lavado, Maria Paula ; Mamede, Rafael ; Araújo Carvalho, Ana ; Rodrigues, Fernanda ; Cristino, José Melo ; Ramirez, Mário ; Friães, Ana
• Data: 2023
• Identificador Persistente: http://hdl.handle.net/10451/64688
• Origem: Repositório da Universidade de Lisboa
• Assunto(s): M1UK; Streptococcus pyogenes; Emm type; Epidemiology; Group A streptococcus; Paediatric infections; Whole genome sequencing
• Tipo de Documento: Artigo científico
• Idioma: Inglês
• Contribuidor(es): Repositório Científico de Acesso Aberto da ULisboa

Descrição

Since autumn 2022, observed numbers of paediatric invasive group A Streptococcus infections in Portugal (n = 89) were higher than in pre-COVID-19 seasons. Between September 2022 and May 2023, the dominant diagnoses were pneumonia (25/79), mostly with empyema (20/25), and sepsis (22/79). A number of cases required admission to intensive care (27/79) and surgery (35/79), and the case fatality rate was 5.1% (4/79). Genomic sequencing (n = 55) revealed multiple genetic lineages, dominated by the M1UK sublineage (26/55) and more diverse emm12 isolates (12/55).