Nutritional risk and clinical outcomes of COVID-19 in hospitalized children and adolescents: a multicenter cohort Leilah B. de Mello; José Adailton da Silva; Heleni A. Clemente; João A. Barros Neto; Carolina S. Mello;

Sanitary measures to contain COVID-19 spread decreased pediatric hospitalizations due to other respiratory infections in São Paulo, Brazil Gabriela Marengone Altizani; Viviane da Mata Pasti Balbão; Gilberto Gambero Gaspar; Davi Casale Aragon; Fabio Carmona;

Protective effect of exclusive breastfeeding and effectiveness of maternal vaccination in reducing pertussis-like illness Renata Medeiros do Nascimento; Paulo Neves Baptista; Katiuscia Araújo de Miranda Lopes; Analíria Moraes Pimentel; Fábia da Silva Pereira Cruz; Ricardo Arraes de Alencar Ximenes;