[DISTRIBUTION OF BACTERIA OF THE KLEBSIELLA STRAIN IN WATER OBJECTS AND THEIR VALUE IN DEVELOPING OF THE WATER CAUSED ACUTE INTESTINAL INFECTIONS].

The wide circulation of Klebsiella bacteria in water ofwater objects of different climatic zones of Russia and various function is established. So bacteria of the Klebsiella strain are in superficial sources of the centralized water supply depending on extent of their biological and chemical pollution; underground waters at the unprotected water-bearing horizons; in drinking water at insufficiently effective system of its cleaning and disinfecting. Klebsiella circulating in water was shown to keep properties of pathogenicity and a virulence, possess resistance both to modern preparations and disinfecting agents (chlorine, an ultraviolet to radiation).

[BIOLOGICAL PROPERTIES OF SALMONELLA, ISOLATED FROM CLINICAL MATERIAL AND AQUATIC ENVIRONMENT IN ROSTOV REGION].

Aim: Study biological properties of salmonella, isolated from clinical materials and water of Don river.

Materials And Methods: Salmonella strains of various serovars were used in the study. Biochemical characteristics were studied by generally accepted methods, antigenic properties were evaluated in agglutination reactions, virulence was determined by Dlm for laboratory animals, antibiotics sensitivity was verified by disc-diffusion method.

[study in the experimental conditions of pesticide action on microorganisms characterizing sanitary-epidemiological safety of reservoirs].

The paper presents experimental data on the pesticides action (molinate (OrdramA), Dinitroortocresolum and chlorophos) at concentrations of 0.01 mg /l to 10 mg/l on sanitary-indicative (TBC, total coliform bacteria, E. coli, E.

[Comparative assessment of sanitary and epidemic importance of indicator coliform indices of drinking water quality].

The used methodology of the scientific substantiation of indicators is in the establishment of the conformity of laws of vital activity of indicator and pathogenic microorganisms in the real conditions of the action of the complex of factors, including disinfecting agents. In the one water sample simultaneously there were determined both the general indicator (GICB), thermotolerant (TTCB), glucose positive (GPCB) coliform bacteria, E.coli.

[Application of the new culture medium for the isolation of Salmonella from water bodies to assess the epidemic safety of water use. Gigiena i Sanitaria (Hygiene and Sanitation, Russian)].

There was developed a liquid storage medium for the isolation of bacteria of genus Salmonella from water bodies (The culture medium for the accumulation of Salmonella, ready to use, “RNS”), providing the accumulation of Salmonella from different serogroups, inhibiting the growth of accompanying microflora, allowing to obtain objective information about the extent of bacterial contamination of water bodies. Medium is by nature of a solution for microbiological purposes which is produced by mixing the components with consequentfiltration and sterilization. In an experimental way there were chosen optimal ratios of the nutrient medium ingredients: extract offodder yeast in an amount of 4.