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Serum IgA responses against (A) NDO-HSA, (B) LID-1, and (C) NDO-LID in household contacts of paucibacillary (PB-C; n = 20) and multibacillary (MB-C; n = 20) leprosy patients, and in endemic (EC; n = 18) and non-endemic (NEC; n = 20) controls. The horizontal bars represent median OD determined by ELISA. * = P < 0.05.
