Abstract
The objective: to determine the effectiveness of detection of patients with pulmonary tuberculosis and prevention of its spread by sputum microscopy in clinical diagnostic laboratories of general medical services of the Republic of Karelia.Results. A reduction in the number of sputum microscopy tests in clinical laboratories of GMS and decrease in the positivity rate to 0.66% was revealed. Among new tuberculosis patients with rifampicin resistance, 51% had abundant bacterial excretion (AFB 2+ and 3+); according to sputum microscopy, tuberculous mycobacteria susceptible to rifampicin were isolated in 38%. In the Republic of Karelia, 31.7% of tuberculosis patients were detected in in-patient units of GMS: 60% of them had cavities, and 28.8% had abundant bacterial excretion (AFB 2+ and 3+). The poor quality of sputum microscopy is the cause of late detection of tuberculosis in the Republic of Karelia and promotes the spread of MDR tuberculosis strains among the population, including nosocomial infection.
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