Fig. 4

Kinetics of anti-SARS-CoV-2 IgG-N and IgG-S1 in 31 patients with known diabetes and 9 patients with newly diagnosed diabetes Antibody levels were log2-transformed. Blue lines represent the threshold value for positive. Comparisons of antibody titers in the same time period were performed using the Mann–Whitney U-test. *P < 0.05.