results tst was positive in 198 (60.4%) health care workers out of 328. likelihood of positive tst among hcws increased in nurses (or = 4.617, 95% ci = 1.181-18.054, p = 0.028), increasing working experience (or = 1.178, 95% ci = 1.131 - 1.226, p < 0.001), and history of exposure to patients with tb (or = 9.035, 95% ci = 4.018 - 20.315, p < 0.001). age, gender and bcg vaccination scar were not ...

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 ...

background: tuberculosis (tb) remains an important health problem throughout the world. despite its significance in public health, mechanisms of protective immunity against mycobacyerium tuberculosis in humans have not yet been understood. objective: to evaluate cell mediated immune response against purified ag 85, ppd and phytohemagglutinin (pha) in patients with tuberculosis and healthy tuber...

541 animals from three dairy farms () were firstly screened for bovine tuberculosis by tuberculin skin testing, out of which 71 (13.12%) animals were found tuberculin reactors. The serum samples of 71 tuberculin positive104 tuberculin negative and 363 non tuberculin tested animals were then evaluated by Purified Protein Derivative (PPD)-ELISA. PPD-ELISA yielded 57.74%, 8.65% and 24.24% seroposi...

background with respect to the prevalence of tuberculosis in our country, bcg vaccination at birth seems to be an effective means of prevention. the present study was designed to evaluate the efficiency of bcg vaccination and factors influencing the tuberculin skin reaction. materials and methods the inoculum of live bcg organisms in vaccinated infants was evaluated at birth and the correlation...