Figure 5.

Presence of CHIVK neutralizing antibodies in seropositive groups. The presence of NAbs was compared between groups of patients that were positive for IgM and/or IgG, using the Chi-square test for each pair of groups (A). The mean of the NAbs was compared between groups of patients that were positive for IgM and/or IgG, using the Kruskal–Wallis test, with the Dunn-Bonferroni correction method for multiple comparison tests (B). The Pearson correlation coefficient was used to assess the correlation between NAbs titer and the P/N ratio of IgM (C) and the correlation between NAbs titer and IgG titer (D). p value was defined as follows * p ≤ 0.05; *** p < 0.001; **** p < 0.0001.