Seroprevalence and indexes of IgG antibodies for SARS-CoV-2 infection among People Living With HIV, tuberculosis patients and healthcare workers, in Salvador, Brazil Daniele Souza de Santana; Eduardo Martins Netto; Sara Nunes Vaz; Paulo Henrique Dantas; Carlos Brites;

Lung function six months after severe COVID-19: Does time, in fact, heal all wounds? Daniel Cruz Bretas; Arnaldo Santos Leite; Eliane Viana Mancuzo; Tarciane Aline Prata; Bruno Horta Andrade; Jacqueline das Graças Ferreira Oliveira; Aline Priscila Batista; George Luiz Lins Machado-Coelho; Valéria Maria Augusto; Carolina Coimbra Marinho;

Effectiveness of CoronaVac in the prevention of COVID-19, a test-negative case-control study in Brazil Expedito J.A. Luna; José C. Moraes; Manuela A. Roediger; Erique J.F.P. Miranda; Patrícia E. Braga; João I.D. França; Pedro H.M. Pacheco; Marcos Alves de Lima; Lucas Ragiotto; Eliana N.C. Barros;