1. Immunogenicity decay and case incidence six months post Sinovac-CoronaVac vaccine in autoimmune rheumatic diseases patients
- Author
-
Clovis A. Silva, Ana C. Medeiros-Ribeiro, Leonard V. K. Kupa, Emily F. N. Yuki, Sandra G. Pasoto, Carla G. S. Saad, Solange R. G. Fusco, Rosa M. R. Pereira, Samuel K. Shinjo, Ari S. R. Halpern, Eduardo F. Borba, Fernando H. C. Souza, Lissiane K. N. Guedes, Renata Miossi, Karina R. Bonfiglioli, Diogo S. Domiciano, Andrea Y. Shimabuco, Danieli C. O. Andrade, Luciana P. C. Seguro, Ricardo Fuller, Percival D. Sampaio-Barros, Ana P. L. Assad, Julio C. B. Moraes, Claudia Goldenstein-Schainberg, Henrique A. M. Giardini, Henrique C. Silva, Victor A. O. Martins, Lorena E. B. Villamarin, Renata S. Novellino, Lucas P. Sales, Carlo S. R. Araújo, Matheus S. R. Silva, Dilson M. N. Filho, Marta H. Lopes, Alberto J. S. Duarte, Esper G. Kallas, Nadia E. Aikawa, and Eloisa Bonfa
- Subjects
Male ,Multidisciplinary ,COVID-19 Vaccines ,SARS-CoV-2 ,Incidence ,General Physics and Astronomy ,COVID-19 ,Viral Vaccines ,General Chemistry ,Antibodies, Viral ,Antibodies, Neutralizing ,General Biochemistry, Genetics and Molecular Biology ,Abatacept ,Vaccines, Inactivated ,Immunoglobulin G ,Rheumatic Diseases ,Humans ,Prednisone ,Tumor Necrosis Factor Inhibitors ,Rituximab - Abstract
The determination of durability and vaccine-associated protection is essential for booster doses strategies, however data on the stability of SARS-CoV-2 immunity are scarce. Here we assess anti-SARS-CoV-2 immunogenicity decay and incident cases six months after the 2nd dose of Sinovac-CoronaVac inactivated vaccine (D210) in 828 autoimmune rheumatic diseases patients compared with 207 age/sex-balanced control individuals. The primary outcome is the presence of anti-S1/S2 SARS-CoV-2 IgG at 6 months compared to 6 weeks after 2nd vaccine dose for decay evaluation. Secondary outcomes are presence of neutralizing antibodies, percent inhibition by neutralizing, geometric mean titers and cumulative incident cases at 6 months after 2nd dose. Anti-S1/S2 IgG positivity and titers reduce to 23.8% and 38% in patients (p p p p
- Published
- 2021