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JYMS : Journal of Yeungnam Medical Science

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Kyung Soo Hong 1 Article
Microbiologic distribution and clinical features of nontuberculous mycobacteria in the tertiary hospital in Daegu.
Kyung Soo Hong, June Hong Ahn, Eun Young Choi, Hyun Jung Jin, Kyeong Cheol Shin, Jin Hong Chung, Kwan Ho Lee
Yeungnam Univ J Med. 2015;32(2):71-79.   Published online December 31, 2015
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AbstractAbstract PDF
Recent studies have shown that the nontuberculosis mycobacterium (NTM) recovery rate in clinical cultures has increased within Korea. However, another study conducted by a secondary hospital within Daegu reported different results. Therefore, the purpose of this study is to understand and evaluate the microbiological distribution and clinical features of NTM in Daegu. METHODS: A retrospective study was conducted on 11,672 respiratory specimens undergoing acid fast bacilli (AFB) culture from 6,685 subjects who visited Yeungnam University Respiratory Center from January 2012 to December 2013. RESULTS: Of the 11,672 specimens undergoing AFB culture, 1,310 specimens (11.2%) showed positive results. Of these specimens, NTM was recovered from 587 specimens, showing a recovery rate of 44.8%. Identification test for NTM was performed on 191 subjects; the results were as follows: M. avium-intracellulare complex (MAC) 123 (64.4%), M. abscessus 20 (10.5%), M. kansasii 12 (6.3%), and 33 other NTM germ strains. Of the 382 subjects with NTM, 167 were diagnosed with pulmonary NTM disease (43.7%), however virulence differed depending on NTM strain. Multivariate analysis showed that nodular bronchiectasis, the nodules, and finding consistent with cavity under imaging study were statistically significant for triggering pulmonary NTM disease. AFB culture showing MAC and M. abscessus was statistically significant as well. Positive predictive value for NTM polymerase chain reaction (NTM-PCR) was 88.6%. CONCLUSION: Results for NTM recovery rate within the Daegu area were similar to those for the Seoul metropolitan area. We can assume that NTM infection is increasing in our community, therefore AFB-positive subjects (1) should undergo NTM-PCR, (2) should have their culture results checked for differentiation of mycobacterium tuberculosis complex (MTB) from NTM, and (3) undergo NTM identification test to confirm its type. Administration of treatment with the above results should be helpful in improving the patients' prognosis.


Citations to this article as recorded by  
  • Epidemiological Characteristics of Nontuberculous Mycobacterial Pulmonary Disease in South Korea: A Meta-analysis of Individual Participant Data
    Geunin Lee, Sol Kim, Shihwan Chang, Hojoon Sohn, Young Ae Kang, Youngmok Park
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  • Distribution and Antimicrobial Resistance of Non-Tuberculous Mycobacteria during 2015∼2020: A Single-Center Study in Incheon, South Korea
    Jiwoo Kim, Hyo-Jin Ju, Jehyun Koo, Hyeyoung Lee, Hyeonhwan Park, Kyungcheol Song, Jayoung Kim
    The Korean Journal of Clinical Laboratory Science.2021; 53(3): 225.     CrossRef
  • Study on the Prevalence of Lung Disease of Non-Tuberculosis Mycobacterium Isolated from Respiratory Specimens in Gwangju Second Hospital over the Last 10 Years
    Hae-Gyeong Baek
    The Korean Journal of Clinical Laboratory Science.2020; 52(4): 349.     CrossRef
  • Recovery Rates of Non-Tuberculous Mycobacteria from Clinical Specimens Are Increasing in Korean Tertiary-Care Hospitals
    Namhee Kim, Jongyoun Yi, Chulhun L. Chang
    Journal of Korean Medical Science.2017; 32(8): 1263.     CrossRef

JYMS : Journal of Yeungnam Medical Science