[Cellular immunity factors of tick-borne typhus patients in northern Asia]

In patients with North Asian tick-borne typhus fever the deficiency of the T-system of immunity, most pronounced in the acute period of the disease, is observed, which is manifested by low values of lymphocyte blast-transformation and rosette-formation. A decrease in the number of active E-rosette-forming cells depends on the severity of the disease. The shifts in the T-system of immunity, appearing in patients with North Asian tick-borne typhus fever, are compensated for comparatively quickly, the normalization of the functional activity of T-lymphocytes occurring sooner than the restoration of their number. The specific dynamics of the characteristics of cell-mediated immunity in patients with North Asian tick-borne typhus fever is accompanied by a comparatively mild course of the disease and its favorable outcome.