Fig. 1

Humoral immunity after SARS-CoV-2 vaccination in KTRs. (A) Study design. (B) Changes in the serologic S-RBD IgG antibody responses against SARS-CoV-2 between 1 and 6 months after the second SARS-CoV-2 vaccination in KTRs (left) and HCs (right). (C, D) Serologic S-RBD IgG antibody responses against SARS-CoV-2 at different time points (C) and the timeline (D). Blue lines and bars represent the medians. Data were analyzed using the Mann–Whitney U test (**P < 0.01, ***P < 0.001).