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. 2022 Sep 4;14(9):1966. doi: 10.3390/v14091966

Figure 4.

Figure 4

Anti-Nucleocapsid antibody response in HCWs. (A) Anti-Nucleocapsid (anti-N) seroconversion rates in HCWs prior to vaccination and (B) 6 months after the full vaccination (t2) (S-positive individuals at t0 and N-positive at t0 and t1 were excluded). (C) Comparison of the anti-Nucleocapsid antibody S/Co between paired seroconverted samples. (D) Levels of anti-Nucleocapsid antibodies in sera of seroconverted individuals at t0 stratified on the basis of age and (E) gender. S/Co, Signal to cut-off ratio; dashed line indicates cut-off value (S/Co = 1.1). Statistical test: Mixed-effects analysis with Tukey’s multiple comparisons test (C), p value **** p < 0.0001, p value *** and * p<0.05.