Figure 4.

Anti‐S IgG in healthcare workers according to comorbidity (A) and autoimmune disease (B). The evaluation was performed after 28 days of the first dose (1D), 28 days of the second dose (2D), and 6 months after the second dose with CoronaVac (6mA2D). Data were expressed by the concentration AU/ml for median values. The comparisons between groups of different time points were performed with the Kruskal–Wallis test and Dunn's multiple testing correction, and the comparisons between groups of the same time point were performed with test t and Mann–Whitney; p‐values < 0.0001 are reported as exact numbers