Fig. 2
From: Humoral immune response after different SARS-CoV-2 vaccination regimens
Development of anti-SARS-CoV-2 immunoglobulin G avidities after first (empty circles) and second (filled circles) immunisation with the vector vaccine AZD1222 or the messenger ribonucleic acid (mRNA)-based vaccines BNT162b2 or mRNA-1273. The measured IgG avidities were assigned to the four categories of undetectable (0), low (1), intermediate (2) and high (3) index. The significance of the distribution differences was calculated between the two groups of undetectable, low and intermediate (i) on the one hand and high (ii) avidity indices on the other. Ns not significant; *p < 0.02; **p < 0.003; ****p < 0.00003 (Bonferroni-adjusted Fisher’s exact test)