At the 60–90 day follow-up time point, we found that in fourth dose recipients, all markers were associated with infection risk (IgA Wuhan: HR = 2.05, p = 0.041; S2: HR = 1.77, p = 0.025; Alinity: HR = 1.65 p = 0.049, Fig. 4). The gene discussed is CD79A; the disease is infection.