METHOD OF ESTIMATING MICROBIAL RISK OF DEVELOPMENT OF BACTERIAL INTESTINAL INFECTIONS TRANSMITTED BY WATER WAY OR CALCULATION OF MICROBIAL RISK LEVEL Russian patent published in 2012 - IPC G01N33/18 C12Q1/00 

FIELD: medicine.

SUBSTANCE: isolated during bacteriologic analysis of quality of water for various purposes pathogenic bacteria, additionally potentially pathogenic bacteria with their further identification and normalised indicators of water quality estimation are taken into considereation with further implementation of process of generalisation into a single assessement of microbial risk thresholds, which is performed by calculating first weighted coefficients by formula: A_n=(P₁·V₁+P₂·V₂+…+P_n·V_n). After that, the data obtained are used to calculate integral index by each sanitary and hygienic factor by formula: Estimation of risk by three-level classifier is considered high if values of R_fac are from 0.4 to 1.0 including 0.4 and 1.0, medium if values of R_fac are from 0.2 to 0.4 and low if values of R_fac are from 0 to 0.2, including 0. Estimation of risk by five-level classifier is considered to be very high if values of R_fac are from 0.6 to 1.0, including 0.6 and 1.0, high if values of R_fac are from 0.4 to 0.6, including 0.4, medium if values of R_fac are from 0.2 to 0.4, including 0.2, low or acceptable if values of R_fac are from 0.15 to 0.2, including 0.15 and very low if values of R_fac are from 0 to 0.15. After that the obtained results are used to calculate generalised index of risk of sexually transmitted bacterial intestinal infections C_A by formula by three-level classifier it is considered high if values of C_A are from 0.4 to 1.0, including 0.4 and 1.0, medium if values of C_A are from 0.2 to 0.4, and low if values of C_A are from 0 to 0.2, including 0. Estimation of risk by five-level classifier is considered very high if values of C_A are from 0.6 to 1.0, high if values of C_A are from 0.4 to 0.6, including 0.4, medium if values of C_A are from 0.2 to 0.4, including 0.2, low or acceptable if values of C_A are from 0.15 to 0.2, including 0.15 and very low if values of C_A are from 0 to 0,15.

EFFECT: application of claimed method makes it possible to reduce or prevent morbidity associated with bacterial semination of water.

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