Immunogenicity and safety of two doses of the CoronaVac SARS-CoV-2 vaccine in SARS-CoV-2 seropositive and seronegative patients with autoimmune rheumatic diseases in Brazil: a subgroup analysis of a phase 4 prospective study

Nádia Emi Aikawa, Leonard V K Kupa, Sandra Gofinet Pasoto, Ana Cristina de Medeiros Ribeiro, Emily Figueiredo Neves Yuki, Carla Gonçalves Schahin Saad, Tatiana do Nascimento Pedrosa, Ricardo Fuller, Samuel Katsuyuki Shinjo, Percival D. Sampaio‐Barros, Danieli Andrade, Rosa Maria Rodrigues Pereira, Luciana Parente Costa Seguro, Juliana Miranda Lucena Valim, Filipe Waridel, Ana Marli C Sartori, Alberto J. S. Duarte, Leila Antonângelo, Éster Cerdeira Sabino, Paulo Rossi Menezes, Esper G. Kallás, Clóvis A. Silva, Eloísa Bonfá