Most T lymphocyte receptors consist of alpha and beta chains, and about 10% of the Background – Data on the percentage of c/d T lymphocytes in the peripheral blood peripheral blood T lymphocytes possess receptors containing gamma and delta chains. of patients infected with Mycobacterium tuberculosis are few and contradictory. The exact role of this population of T lymphocytes is not yet clear. ...

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...

Eastern Nigeria presents today a situation of great interest as concerns the relationship of leprosy to tuberculosis. Leprosy is declining rapidly while tuberculosis is increasing, and if there is any truth in the hypothesis that the retreat of one disease is induced by the advance of the other, circumstances are now unfolding in which it should be possible to demonstrate the facts. Against thi...

Since the incidence of tuberculosis is steadily declining in Finland and infections by environmental mycobacteria may be increasing, the aim of the present study was to evaluate the development of tuberculin reactivity and sensitization to environmental mycobacteria. Healthy Finnish schoolchildren aged 10.4-12.4 yrs (n=201) were tested with tuberculin purified protein derivative RT23, Mycobacte...

Comprehensive new guidelines for screening, targeted testing, and treating latent tuberculosis infection (LTBI) in children and adolescents are presented. The recent epidemiology of TB and data on risk factors for LTBI are reviewed. The evidence-based recommendations provided emphasize the paradigm that children and adolescents should be screened for risk factors by using a risk-factor question...

  Objective(s): According to the occupationally risk of infection in staff workers who have direct contact with mycobacterium species, we investigated their immunological parameters and compared with healthy purified protein derivative (PPD) negative volunteers.   Materials and Methods : We investigated 20 PPD positive volunteers working at Tuberculin Unit of Razi Vaccine and Serum Research Ins...