[Certain indices of cell-mediated immunity among brucellosis patients who were vaccinated and react positively to brucellin].

A significant decrease in the absolute content of T-lymphocytes and an increase in the percentage of macrophages were revealed in patients with acute and chronic brucellosis, persons vaccinated with live brucellosis vaccine and in persons with a positive reaction to brucellin. At the peak of acute brucellosis infection and at an early period following immunization with live brucellosis vaccine a high percentage of cases showing the presence of T-lymphocytes sensitized to brucellosis antigen was observed.