Antibody response to inactivated COVID-19 vaccine (CoronaVac) in immune-mediated diseases: a controlled study among hospital workers and elderly.

Objective: To assess antibody response to inactivated COVID-19 vaccine in patients with immune-mediated diseases (IMD) among hospital workers and people aged 65 and older.

Methods: In this cross-sectional study, we studied 82 hospital workers with IMD (mean age: 42.2 ± 10.