Skip to main content
. 2022 Mar 17;28(7):1027.e1–1027.e4. doi: 10.1016/j.cmi.2022.03.012

Fig. 1.

Fig. 1

Natural evolution of humoral immune response after SARS-CoV-2 infection among healthcare workers (HCWs). Evolution of antibody response during 6 months for (a) anti-RBD IgG, (b) anti-N IgG, (c) anti-S IgA, and (d) anti-RBD neutralizing activity (M0, n = 92; M6, n = 91). On each graph, the horizontal dotted line represents the positivity cut-off of the technique: (a) 50 BAU/mL, (b) 0.5 (index), (c) 1.1 (index), (d) 30%. BAU, binding antibody units; RBD, receptor-binding domain. ∗∗p < 0.005; ∗∗∗∗p < 0.0001.