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Assessment of the degree of potential risk of infection of contacts in the focus of combined pathology of tuberculosis and HIV infection in the system of optimization of the complex of sanitary and anti-epidemic measures

The article presents a system for assessing the degree of potential risk of infection of contact ones in the tuberculosis focus with a source of infection suffering from HIV infection, based on methods of cluster analysis of risk factors, including hierarchical clustering and k-medium methods. Of the 20 factors characterizing the source of the combined pathology infection (HIV infection and TB), the most significant were taken for hierarchical cluster analysis. They included 6 factors: social, groups of epidemiological burden of foci, clinical, comorbidities, laboratory, sex. The use of the assessment system allows, on the basis of the factors selected for the analysis, to determine the tactics of epidemiological surveillance of the tuberculosis focus, to justify the transfer of the focus to a higher group of epidemic danger and to optimize measures for epidemiological control of the disease.