We performed a case-control study of the efficacy of BCG immunization against pulmonary
tuberculosis in 15-to 35-year-old Chilean patients born during a period when BCG coverage …

The purpose of the present study was to determine in BCG-immunized sibships< or= 14 yr of
age whether the correlations of intensity of tuberculin reactivity support a genetic regulation …

Abstract Setting: Studies showing significantly higher concordance of tuberculosis among
monozygotic twins than dizygotic twins have provided support for genetically determined …

Objective: The proportion of tuberculin reactors in a population and the intensity of tuberculin
reactions have been shown to increase with increasing exposure to mycobacterial infection …

Abstract Setting: Some infants immunized with BCG in the newborn period fail to develop
any measurable tuberculin reactivity despite a local reaction at the site of immunization …