SARS-CoV-2 testing disparities across geographical regions from a large metropolitan area in Brazil: Results from a web-based survey among individuals interested in clinical trials for COVID-19 vaccines Thiago S. Torres; Paula M. Luz; Lara E. Coelho; Cristina Jalil; Gisely G. Falco; Leonardo P. Sousa; Emilia Jalil; Daniel R.B. Bezerra; Sandra W. Cardoso; Brenda Hoagland; Claudio J. Struchiner; Valdilea G. Veloso; Beatriz Grinsztejn;

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;