[The systemic immunity of schoolchildren from foci of tuberculosis infection].

Seventy-eight tuberculin-positive schoolchildren at the age of 7 to 15 years from tuberculosis foci living in special institutions of the sanatorium type were subjected to immunological examination. The control group included 22 noninfected children of the same age. Persons with lower counts of T-lymphocytes and their decreased functional activity, unbalance in their subpopulation composition and positive immunospecific responses to tuberculin predominated among the schoolchildren subjected to the examination.