Figure 1.

Interquartile ranges and medians of anti-PGL-I IgM, IgG, and IgA levels in serum samples from MB (multibacillary) contacts without lesions/MB healthy contacts (HC; N = 251), MB contacts with suspected lesions (LC; N = 32), and MB leprosy index cases (IC; N = 50). The cutoff values were 1.1 for IgA and 1.2 for IgG and IgM isotypes.

^ap<0.0001, Kruskal-Wallis test, anti-PGL-I IgM levels in MB index cases were higher than in MB healthy contacts; ^bp<0.01, Kruskal-Wallis test, anti-PGL-I IgM levels in MB index cases were higher than in MB contacts with lesions; ^cp<0.001, Kruskal-Wallis test, anti-PGL-I IgG levels in MB index cases were higher than in MB healthy contacts; ^dp<0.0001, Kruskal-Wallis test, anti-PGL-I IgA levels in MB index cases were higher than in MB healthy contacts and contacts with lesions.