Levels of igM (A) and igG (B) anti-Mce 1A, in patients (age 0–59 months) with pulmonary tuberculosis (PTB), latent tuberculosis infection (LTBI) and exposed to TB (TBE). Receiver operater characteristic (ROC) curve (C) comparing igG anti-Mce 1A level in PTB versus (vs) LTBI. AUC = area under the curve, Se = sensitivity, sp = specificity Cl = confidence intervel, ns = not significant and LR = likehood ratio.