COVID-19 in health care workers in a university hospital during the quarantine in São Paulo city Klinger Soares Faíco-Filho; Joseane Mayara Almeida Carvalho; Danielle Dias Conte; Luciano Kleber de Souza Luna; Nancy Bellei;

COVID-19 hospitalization in vaccinated and non-vaccinated patients: Clinical profile and outcomes Laura Holtman-Ferreira; Elessandra de Souza Bitencourt; Betina Mendez de Alcantara Gabardo; Susanne Edinger Pereira; Francine Teixeira; Diego da Silva Magatão; Vitor Loureiro Dias; Ricardo Petterle; Meri Bordignon Nogueira; Sonia Mara Raboni;

Demographic, epidemiological and clinical profile of patients with post-COVID syndrome followed at a teaching hospital in Brazil João Paulo Borges de Melo; Alex Eduardo da Silva; Leandro Resende Yamamoto; Taciana Fernandes Araújo Ferreira; Gustavo José Luvizutto; Fernando Freitas Neves; Kelly Cristina Santos; Roger Lopes Batista; Isabel Cunha Santos; Francielle Schiavoni; Mario León Silva-Vergara;