Распространенность нетуберкулезных микобактерий в Гомельской области

Objective: to assess the species diversity and frequency of detection of nontuberculous mycobacteria (NTM) in patients of antituberculous organizations in Gomel region. Material and methods. 1057 isolates of mycobacteria were analyzed. To identify the species of the mycobacteria, phenotypic and molecular genetic studies of the isolates were performed. Results. A total of 13 NTM types have been identified. The most common were M. avium and M. intracellulare (MAC complex) - 63.7 % (60.79-66.67), followed by M. gordonae and M. fortuitum (7.66 %; 6.13-9.43 and 7.57 %; 6.05-9.33, respectively). Multiple isolation of NTMs of one species (from 2 or more samples) was observed in 190 patients, which amounted to 37.4 % of all the patients. In 75.3 % of the cases, MAC was obtained (χ 2 = 97.01; p <0.001). The second place in terms of etiological significance was occupied by M. xenopi (6.43 %), the third one - by M. gordonae (5.3 %). Conclusion. Out of 13 identified NTMs, the most common causes of the development of mycobacteriosis were MAС complex, M. xenopi , M. gordonae .