A Randomized, Double-blind, Equivalence Study of Tuberculin Purified Protein Derivative in Comparison With a Reference Standard Tuberculin Purified Protein Derivative (PPD-S2) for Detection of Tuberculosis in Subjects With a Confirmed Diagnosis of Tuberculosis.

This study is a multicenter, double-blind, active-controlled parallel-group study to determine the bioequivalence of newly produced PPD material versus PPD-S2 in the detection of male and female subjects with current or previously diagnosed intrathoracic Mtb infection, as documented by a positive culture for Mtb (preferred method), by their primary care or attending physician and/or by the subject's current or prior medical records (ie, sensitivity determination).