As we have recently reported (2), in cases of lepromatous leprosy, which almost by defiI1ition are lepromin negative, the administration of BCG causes in some cases an increase in the reactivity to lepromin as well as the usual tuberculin conversions. The following are the data there reported, now slightly revised: One hundred and four lepromatous cases, negative to both tuberculin and lepromin...

OBJECTIVE To study the association of workplaces and recent onset latent tuberculosis (LTB) in health care workers (HCW). METHODS A case-control study was conducted at Srinagarind Hospital, Khon Kaen University, Thailand. We recruited HCW who had results of tuberculin test within 2 consecutive years from 2001-2008 and also had fixed workplaces (working hours more than 40 hours/week). Cases we...

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...

Background: The risk of developing tuberculosis is high among chronic hemodialysis patients. The tuberculin skin test (TST) has been in use for diagnosing latent TB, but few data are available on TST in hemodialysis patients. Objective: This study was done to identify the TST reactivity and frequency of booster effect in serial TST among hemodialysis patients. Methods: A total of 100 patients i...

Abstract Background Bovine tuberculosis (bTB), is a worldwide disease caused by Mycobacterium bovis ( M. ). The success of bTB eradication and control programs based on early detection the removal reactors from herd thus routine testing cull strategy have been applied globally. Since late nineteenth century, Tuberculin Skin Test (TST) has primary antemortem test available to support campaigns. ...