Differences in children and adolescents with SARS-CoV-2 infection: a cohort study in a Brazilian tertiary referral hospital Heloisa Helena de Sousa Marques; Maria Fernanda Badue Pereira; Angélica Carreira dos Santos; Thais Toledo Fink; Camila Sanson Yoshino de Paula; Nadia Litvinov; Claudio Schvartsman; Artur Figueiredo Delgado; Maria Augusta Bento Cicaroni Gibelli; Werther Brunow de Carvalho; Vicente Odone; Uenis Tannuri; Magda Carneiro-Sampaio; Sandra Grisi; Alberto José da Silva Duarte; Leila Antonangelo; Rossana Pucineli Vieira Francisco; Thelma Suely Okay; Linamara Rizzo Batisttella; Carlos Roberto Ribeiro de Carvalho; Alexandra Valéria Maria Brentani; Clovis Artur Silva; HC-FMUSP Pediatric COVID Study Group;

Spotlight for healthy adolescents and adolescents with preexisting chronic diseases during the COVID-19 pandemic Clovis Artur Silva; Lígia Bruni Queiroz; Claudia de Brito Fonseca; Luís Eduardo Vargas da Silva; Benito Lourenço; Heloisa Helena Sousa Marques;

Patients with rare diseases are responsible for the majority of hospitalizations in a Brazilian tertiary pediatric hospital: Preliminary data Cristina Grassiotto; Simone Pavani; Nara Vasconcelos Cavalcanti; Angelina Gonçalves; Andreia Watanabe; Vicente Odone-Filho; Ana Cristina Aoun Tannuri; Clovis Artur A. Silva; Magda Carneiro-Sampaio;