Background: The tuberculin test is widely used to identify tuberculosis infection. Some individuals infected with Mycobacterium tuberculosis may have an initial negative skin test reaction to tuberculin. The two step purified protein derivative skin test can decrease misinterpretation of tuberculin test .This study was aimed at comparing the two- step tuberculin skin test and booster phenomenon...

background: the tuberculin test is widely used to identify tuberculosis infection. some individuals infected with mycobacterium tuberculosis may have an initial negative skin test reaction to tuberculin. the two step purified protein derivative skin test can decrease misinterpretation of tuberculin test .this study was aimed at comparing the two- step tuberculin skin test and booster phenomenon...

background according to several studies, diabetes mellitus has been recognized as one of the main risk factors for pulmonary tuberculosis (ptb). objectives the main purpose of this study was to determine the frequency of smear-positive pulmonary tuberculosis (tb) in patients with diabetes. materials and methods this cross-sectional study was conducted from april 2010 to december 2011 in ali asg...

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 & objectives: annually, many muslims fast during the month of ramadan worldwide. this practice has different favorable medical and physiological effects, such as improved serum lipid profile and blood glucose level due to changes in diet and sleep patterns. it has also been hypothesized that ramadan fasting may affect the immune system. as reported, ramadan fasting can influence the ...

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...

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...

OBJECTIVE Recommendations that purified protein derivative (PPD) RT-23 tuberculin should not be kept and used more than 24 to 48 hours after opening are rarely complied with. The aim of this study was to determine whether using PPD RT-23 tuberculin from vials that had been open for a longer time could affect results of tuberculin tests and whether the solution could become contaminated. METHO...