Interquartile ranges and medians of anti-PGL-I IgM, IgG, and IgA levels in serum samples from PB (paucibacillary) contacts without lesions/PB healthy contacts (HC; N = 89), PB contacts with suspected lesions (LC; N = 23), and PB leprosy index cases (IC; N = 21). The cutoff values were 1.1 for IgA and 1.2 for IgG and IgM isotypes.
*p < 0.01, Kruskal-Wallis test, anti-PGL-I IgA levels in PB index cases were higher than in PB healthy contacts.