Purpose: Assessment of the severity of immunological disorders in patients with hlamydia trachomatis (CT) infection and the effectiveness of antibacterial therapy in combination with systemic enzyme therapy for the eradication of pathogenic pathogen and correction of detected violations of the immune system., Materials and Methods: 84 patients with identified CT infection were divided into 2 clinical groups: group 1 (42 people) received antibiotic therapy with doxycycline monohydrate for 10 days, 100 mg 2 times a day (the first dose of 200 mg) at regular intervals (daily dose of 200 mg, course - 2.0 g.) in combination with phlogenzyme, 3 tablets 2 times a day within 14 days. The second clinical group (42 people) received only doxycycline monohydrate therapy at the same doses as in the first clinical group. In all patients with CT infection (84 people) and in the control group (32 practically healthy people), the activity of immune reac-tions in the body was additionally assessed by the level of cytokines (-INF, IL-1, IL-4, IL-6), circulating immune complexes (CIC), lactoferrin (LF) and 2-macroglobulin in blood serum., Results: The level of CEC in the blood serum of patients with CT infection is significantly higher than the standard indicators (by 1.83 times) compared with the indicators of the control group (106.1+/-5.12 conventional units versus 57.8+/-3.39 conventional units, p<0.05). The level of -IFN in the blood serum of patients with CT infection is 1.64 times lower than in the control (28.9+/-4.15 pkg / ml and 47.3+/-4.26 pkg / ml, p<0.05), and indicators of IL-1 in blood serum - 3.12 times higher; the level of IL-6 is 2.13 times higher (p<0.001); the level of IL-4 is 1.65 times higher (p<0.05). The Lf level in patients with CT infection exceeded 2.37 times the indicator in the control group (1742.0+/-112.15 ng / ml and 732.1+/-36.11 ng / ml, p<0.001), 2-macroglobulin - in 1, 36 times (2.59 - 0.21 mg/l and 1.9 - 0.47 mg / l, p<0.001). The efficiency of clinical and microbiological cure in patients with CT infection, who received complex therapy with doxycycline monohydrate and phlogenzyme, was 97.6%. With monotherapy (doxycycline monohydrate), the effectiveness of clinical and microbiological cure was significantly lower - 78.6%, statistically significant (OR=11.2; 95% CI 1.3-247.9; p=0.007). The fact of a decrease in the activity of Th-2 type of the cellular link of immunity in patients with CT infection receiving systemic enzyme therapy drug was established., Discussion: One of the pathogenetic mechanisms of CT infection is an imbalance in the cytokine profile, which manifests itself in an increase in the level of cytokines of the Th-2 (IL-6) type and a decrease in the Th-1 (-IFN) type. With the predominant production of pro-inflammatory cytokines (IL-1, IL-6), the dynamics of CT infection becomes chronic. A decrease in the reserve capacity of the proteolytic enzyme system during CT infection with a subsequent increase in the level of 2-macroglobulins in the blood contributes to the dysregulation of local inflammation processes and the formation of immune disorders. With a long course of CT infection, it is most advisable to use (as a basic pathogenetic therapy) systemic enzyme therapy (phlogenzyme). The effect of systemic enzyme therapy on immune responses in C. trachomatis enhances the activity of the Th-1 type of cytokines (-IFN) and a decrease in the level of 2-macroglobulins and pro-inflammatory cytokines (IL-1, IL-6) in the blood. Systemic enzyme therapy can significantly increase the effectiveness of antibiotic therapy and reduce the risk of side effects., Conclusion: The theoretical argumentation of the pathophysiological mechanisms of disorders in the interaction of the most important functional systems made it possible to substantiate new conceptual approaches to the therapy of CT infection, taking into account the level and specific disorders in the universal systems of homeostasis regulation. In particular, a pathophysiological basis has been provided to substantiate the advisability of combining antibacterial therapy with systemic enzyme therapy drugs to correct systemic immunological disorders in patients with CT infection.