The median (IQR) of those who developed infection were [anti-RBD, 7,332 (4404–11017); anti-S1, 16,011 (8,405–22,427); and anti-S2, 470 (345–773)] versus those who did not develop infection [anti-RBD, 8,310 (4,896–11,959); anti-S1, 16,449 (10,659–22,993); and anti-S2, 612 (335–955)]; all p > 0.05 (Figure 2B). Here, PSMD1 is linked to infection.