Abstract
Nontuberculosis mycobacteria (NTM) are opportunistic pathogens that cause a wide range of illnesses. Here, the species distribution and prevalence of NTM infections in tuberculosis suspects was analyzed. A total of 7,073 specimens from pulmonary and extrapulmonary sites were analyzed, and 709 (10%) were found to be culture positive for mycobacteria. Of these, 85.2% were identified as Mycobacterium tuberculosis complex and 14.8% as NTM (65.7% rapid growers and 34.3% slow growers). Speciation of the NTM isolates (n = 69) identified 19 NTM species. M. abscessus (33.3%) and M. fortuitum (24.6%) were the most dominant NTM species isolated from the patients, followed by M. porcinum (5.8%) and M. parascrofulaceum (4.3%). We also report peritonitis caused by rapidly growing NTM among the patients undergoing continuous ambulatory peritoneal dialysis and a case of M. senegalense peritonitis. A low prevalence but high species diversity of NTM was detected in our study. The high species diversity of NTM necessitates the need to unequivocally identify mycobacterial isolates for appropriate treatment.
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