Abstract: | The results obtained in the simultaneous study of the microbiology of different sections of the gastrointestinal tract (the oral cavity, the stomach, the large and small intestines) in chronic enteritis patients, as well as in the study of biopsy mucosa samples from the small intestine of such patients, are presented. This method has been shown to give a complete picture indicating both the severity of dysbiotic disturbances in the patient and the degree of their spread in the alimentary canal, which should be taken into account in clinical practice for the determination of the severity of the disease, the rational course of treatment and the time of the discharge of the patient from the hospital. |