International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

A Widely Indexed Open Access Peer Reviewed Multidisciplinary Bi-monthly Scholarly International Journal

Call for Paper Volume 8, Issue 5 (September-October 2026) Submit your research before last 3 days of October to publish your research paper in the issue of September-October.

Detection of Nontuberculous Mycobacteria by MALDI-TOF MS and Its Co-infection with Mycobacterium Tuberculosis

Author(s) Mahima Chouhan, Dr. Jayant Ramawat, Dr. Prabhu Prakash
Country India
Abstract Introduction: Coinfection of MTB complex with NTM is increasingly recognised in TB endemic countries, which may remain undiagnosed or coexist with pulmonary TB, resulting in diagnostic and therapeutic challenges. Methods: An observational study was conducted in a tertiary care centre, which included suspected NTM pulmonary disease patients’ LJ culture isolates. Patients were of all age groups and both sexes. Detection of co-infections was via CBNAAT and/or LPA and MALDI-TOF Mycobacterial/Nocardia Kit. Results: Among 55 patients with suspected NTM pulmonary disease, 10 NTM isolates (18.2%; 10/55) were identified by MALDI-TOF MS. The identified species were Mycobacterium kansasii (n=4; 40%), Mycolicibacterium fortuitum (n=4; 40%), and Mycolicibacterium wolinskyi (n=2; 20%). MTB–NTM coinfection was detected in 4/10 (40.0%) NTM-positive patients, corresponding to 4/55 (7.3%) of the total study population. Of these four coinfected patients, two were MTB-positive by CBNAAT and rifampicin-sensitive, while the remaining two were positive by first-line LPA and were sensitive to both rifampicin and isoniazid. Among the coinfected patients, M. fortuitum accounted for 2/4 (50%), while M. kansasii and M. wolinskyi accounted for 1/4 (25%) each. Conclusion: NTM infection along with MTB–NTM coinfection was low among TB-suspected patients. Identification by the MALDI-TOF MS of suspected NTM pulmonary disease diagnosis enables rapid and accurate species identification and improves recognition of NTM infections in TB-endemic areas and potentially reduces morbidity.
Keywords Tuberculosis, Nontuberculous mycobacteria, MTB–NTM coinfection, MALDI-TOF MS, Mycobacterium fortuitum, Mycobacterium kansasii, Mycobacterium wolinskyi.
Field Biology > Medical / Physiology
Published In Volume 8, Issue 5, September-October 2026
Published On 2026-10-18
DOI https://doi.org/10.36948/ijfmr.2026.v08i05.87530

Share this