Last decades a sepsis problem attracts the increased interest in the world community. In spite of definite achievements of modern fundamental and clinical medicine, sepsis as before is characterized by significant dissemination and high lethality. The problems of sepsis spread in various countries are discussed. It is shown that annually million cases of generalized purulent-septic infections are diagnosed. Steady sepsis increase is registered in industrially developed countries. Share of severe sepsis in pathology structure varies from 2 to 43% in different territories. Sepsis still remains among leading causes of human death being characterized by essential hospital lethality (from 30,6 to 80,4%). The patient categories belonging to high risk groups of sepsis development are shown. Special attention is directed to epidemiological manifestations of this pathological syndrome in pediatrics. Features of etiologic spectrum of the sepsis causative agents, increasing etiological importance of multi-resistant bacteria (Pseudomonas aeruginosa, Klebsiella pneumoniae, Acinetobacter spp., MRSA, VRE, etc.) are demonstrated. In consideration of clinical-epidemiological, social and economic significance of sepsis, studying of its epidemiological aspects is the major direction of activities for Public Health services.

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The purpose of the research was to study epidemiological manifestations and etiological structure of sepsis in a multidisciplinary hospital for children.Materials and methods. An analysis of cases of 85 patients with a diagnosis of sepsis hospitalized in a multidisciplinary hospital at the regional level (Irkutsk) for the period 2013–2018 was carried out.Results and discussion. The most affected age groups are children under one year old (23.5 %) and from one year to two years (29.4 %). During the study period, 572 bacterial and fungal cultures, represented by 19 types of microorganisms, playing a leading role in the formation of the microbial ecology of the hospital, were isolated from patients with GPSI. In the structure of the GPSI microflora, gram-negative microorganisms are found in 49.8 % of cases, grampositive microbiota – in 30.1 %, fungi account for one fifth of all positive findings. A. baumannii and P. aeruginosa were sown more often from blood, sputum and abdominal cavity, and S. aureus and A. baumannii were the most frequent pathogens from wounds. The largest number of enterococci is isolated from urine.Conclusions. The etiological factor in the development of nosocomial GPSI in most cases is gram-negative microorganisms – A. baumanii (39.9 %), P. aeruginosa (20.7 %), K. pneumoniae (23.1 %). At the same time, in recent years, fungi have become increasingly important in the etiology of septic conditions.

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