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;

Characteristics and outcomes of pregnant women with SARS-CoV-2 infection and other severe acute respiratory infections (SARI) in Brazil from January to November 2020 Lisiane F. Leal; Joanna Merckx; Deshayne B. Fell; Ricardo Kuchenbecker; Angelica E. Miranda; Wanderson K. de Oliveira; Robert William Platt; Lívia Antunes; Mariângela F. Silveira; Natália Bordin Barbieri;

Seroprevalence of anti-SARS-CoV-2 in patients with hepatitis B and C: a pre-vaccination study Lucas Lima da Silva; Lia Laura Lewis-Ximenez; Mônica de Avelar Figueiredo Mafra Magalhães; Vanessa Salete de Paula; Livia Melo Villar;