[Characteristics of tuberculosis epidemiology in the Ulianovsk district]

Tuberculosis control has led to the attenuation of the exogenous infection and increased the role of endogenous infection in the formation of tuberculosis morbidity among the population of the region. A decrease in the effectiveness of antituberculosis measures is associated with the difficulties encountered in the control of exogenous infection whose main source is accumulated in socially unfavourable population groups, rise of the role of endogenous infection and risk factors, capacity of an epidemic process to adjust to the level of the organization of antituberculosis measures with the result that the relative equilibrium can arise in the tuberculosis-antituberculosis measures system.