نتایج جستجو برای: prevalence of tuberculin positive
تعداد نتایج: 21201682 فیلتر نتایج به سال:
Abstract Introduction: Considering the importance of screening for diagnosis of tuberculosis (TB) infection among medical students and the necessity of annual TB tests and effectiveness of preventive programs, there is an ever increasing need for undertaking research to investigate the effect of residence in hospital on the risk of tuberculosis infection among students, and planning strategies...
the aim of the present study was to determine the in?uence of presence or absence of corpus luteum (cl) on hormonal and metabolites composition of follicular ?uid (ff) harvested from different sized follicles and its relationship with blood serum concentrations in sanjabi ewes. ovaries and blood samples were collected from 60 clinically healthy adult ewes (sanjabi breed) 1–3 years of age in dio...
conclusion skin test anergy is uncommon among drug users and the ppd skin test may be reliably used for the identification of latent tb infection in the population. results a total of 221 patients (216 male, mean age 43.5 ± 14.3 years) were studied. tuberculin skin test results showed that 87 subjects (39.4%) tested positive for tb reactivity. reactivity to tetanus and candida antigens were obs...
the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...
CONTEXT Concern about transmission of Mycobacterium tuberculosis on college campuses has prompted some schools to institute tuberculin skin test screening of students, but this screening has never been evaluated. OBJECTIVE To describe tuberculin skin test screening practices and results of screening in colleges and universities in the United States. DESIGN AND SETTING Self-administered mail...
BACKGROUND We estimated the effect of remote BCG vaccination on tuberculin reactivity and the booster effect among hospital employees. METHODS Cross-sectional survey at a university hospital. All personnel employed during a 24-month period were included in the study. Employees were administered 2-step tuberculin testing, and BCG vaccination scars were verified. RESULTS Of 665 hospital emplo...
the purpose of this study was to investigate how english language teachers in mashhad who teach students in the pre-university cycle perceived the impact of the efltee on their teaching. the target population was nearly all pre-university english language teachers in seven districts of mashhad in the scholastic year 2008/2009. a survey questionnaire which consisted of (36) likert type items, wa...
T HE TUBERCULIN TEST IS THE MOST effective means for detecting tuberculous infection, and hence is an essential tool in ultimate eradication of the disease. In clinical practice it has been generally accepted that a positive tuberculin skin reaction indicates the possibility of tuberculosis, whereas a negative reaction, with few exceptions, rules out a tuberculous infection. Since the advent of...
OBJECTIVES Spanish clinical guidelines recommend screening patients for tuberculosis (TB) before TNF inhibitors (TNFi) treatment. Our objective was to estimate the prevalence of TST seroconversion as an estimation of the prevalence of latent TB in patients with rheumatic diseases and TNFi treatment that have already been screened for tuberculosis. METHODS TST, booster and chest x-ray were per...
Use of a T-cell-based test for detection of tuberculosis infection among immunocompromised patients.
The aim of this study was to compare the performance of the T-SPOT.TB test, a T-cell-based test, with the tuberculin skin test (TST) in the diagnosis of latent tuberculosis (TB) infection. The study was carried out in 138 immunosuppressed haematology patients who had been nosocomially exposed to a case of smear-positive TB. Overall, 44.2% of the contacts were positive by T-SPOT.TB test, and 17....
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