easily differentiated from the BY normal contour and color of the A. R. MASTEN, M.D. s]dn Specific because without wheatridge, Colo. a pl.ece(]jng infection with tubercle bacilli no reaction will occur. Accurate because no other known combination of factors will give the same result. That is, a person cannot become sensitive to tuberculin by any means except a previous infection with tubercle b...

This study was aimed at investigating the immunologic relationship between cytokine production pattern and tuberculin negativity in patients with active Mycobacterium tuberculosis infection. After classifying patients by the extent of pulmonary involvement and the size of the tuberculin reaction, we evaluated the rate of cytokine positivity in peripheral blood to determine whether there is a ch...

BACKGROUND Cutaneous sensitivity to the tuberculin antigen is thought to indicate latent tuberculosis infection (LTBI). Some guidelines suggest treating end-stage renal disease (ESRD) patients for LTBI on the basis of tuberculin positivity. The prevalence of tuberculin sensitivity and cutaneous anergy in Indian patients with ESRD and the utility of the tuberculin test for predicting post-transp...

To evaluate the effect of BCG vaccination and T lymphocyte subpopulations on the reactivity to the tuberculin skin test, 113 asymptomatic HIV+ individuals were tuberculin tested by intradermal injection of 5TU of purified protein derivative and the levels of circulating lymphocyte (CD3, CD4 and CD8) subpopulations determined by indirect immunofluorescence. Ninety-two percent of the subjects inc...

background tubercle bacilli most often are transmitted from one person by the airborne route. the aim of the present study was to determine the frequency of latent tuberculosis infection and active pulmonary tuberculosis among patients with chronic psychiatric disorders in hamedan. patients and methods in a cross sectional study, 215 patients with chronic psychiatric disorders were investigated...

background there is a high risk of tuberculosis (tb) infection among injecting drug users (idus). objectives this study aimed to determine the frequency of latent and active tb infection among idus. materials and methods in a cross-sectional study between 2008 and 2009, idus referred to the methadone maintenance treatment (mmt) centers in hamedan-iran, undergone tuberculin skin test (ppd; purif...

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...

The accuracy of the tuberculin test depends on several factors, including the use of high-quality tuberculins, the format of the tuberculin test used (e.g. single intradermal comparative tuberculin test, single intradermal tuberculin test, the caudal fold test), the efficiency of the testing procedure, the mode of interpretation of the test result as well as the immunological responsiveness of ...

To estimate the annual risk of tuberculosis (TB) infection (ARTI) in Somalia a tuberculin survey was conducted in February/March 2006. Stratified cluster sampling was carried out within the 18 regions and 101 randomly selected primary schools. Tuberculin testing was done in 10 680 grade 1 schoolchildren. Transverse tuberculin reaction size was measured 72 hours later. The number of children wit...

OBJECTIVE The purpose of this study was to explore the association between tuberculin reaction size in contacts with positive tuberculin skin test results and a variety of contact and index patient variables. PATIENTS AND METHODS We reviewed the contact investigation records for tuberculosis patients identified by the Tuberculosis Prevention and Control Center of Lleida, Spain, over a period ...