Risk factors for severe COVID-19 infection in Brazilian children Jordana Vaz Hendler; Patricia Miranda do Lago; Gabriel Cardozo Müller; João Carlos Santana; Jefferson Pedro Piva; Liane Esteves Daudt;

SARS-CoV-2 identification in an acute appendicitis case: Acute abdomen as manifestation of Multisystem Inflammatory Syndrome in a child with COVID-19 Amanda Munhoz Serra; Andréa Maria Cordeiro Ventura; Lucas Freitas Xavier; Angélica Braz Simões; Amaro Nunes Duarte-Neto;

Chronic arthritis related to SARS-CoV-2 infection in a pediatric patient: A case report Luísa Rosa de Morais Palma Crivelenti; Marina Martins Nascimento Frazão; Marina Paiva de Melo Maia; Francisco Hugo Rodrigues Gomes; Luciana Martins de Carvalho;