It is well known that after Bacille Calmette-Gue'rin (B.C.G.) vaccination the degree of allergy as shown by the tuberculin test is of a lesser order than that after infection with virulent tubercle bacilli. For this reason it may be necessary to perform several successively stronger tuberculin tests up to 100 units of old tuberculin (Mantoux 1/100) before a positive post-vaccination test is obt...

It is well known that after Bacille Calmette-Gue'rin (B.C.G.) vaccination the degree of allergy as shown by the tuberculin test is of a lesser order than that after infection with virulent tubercle bacilli. For this reason it may be necessary to perform several successively stronger tuberculin tests up to 100 units of old tuberculin (Mantoux 1/100) before a positive post-vaccination test is obt...

conclusions special high-risk groups, including patients with ltbi, should be treated before receiving tnf-α inhibitors. the tuberculin skin test (tst) is a somewhat cost-effective test for the diagnosis of ltbi. however, its usefulness with respect to false results should be re-evaluated in this situation. results there were somewhat different approaches proposed by various researchers regardi...

Eastern Nigeria presents today a situation of great interest as concerns the relationship of leprosy to tuberculosis. Leprosy is declining rapidly while tuberculosis is increasing, and if there is any truth in the hypothesis that the retreat of one disease is induced by the advance of the other, circumstances are now unfolding in which it should be possible to demonstrate the facts. Against thi...

A large proportion of tuber culin tests in tropical countries yield weak or doubtful reactions. Since leprosy is common in many of the countries where this phenomenon has been observed, it has been suggested that some of these anomalous r eactions may be due to nonspecific sensitization to mycobacterial antigens common to both the leprosy and the tubercle bacilli, The positive tuberculin hemagg...