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Journal of Tuberculosis and Lung Disease ›› 2023, Vol. 4 ›› Issue (6): 475-479.doi: 10.19983/j.issn.2096-8493.20230099

• Original Articles • Previous Articles     Next Articles

Analysis of fluoroquinolones resistance in multidrug-resistant tuberculosis patients in Chongqing from 2020 to 2022

You Guoqing, Liu Wenguo, Feng Xin, Yu Min, Shi Lin, Hu Yan()   

  1. Tuberculosis Reference Laboratory, Chongqing Institute for Tuberculosis Control, Chongqing 400050, China
  • Received:2023-08-30 Online:2023-12-20 Published:2023-12-18
  • Contact: Hu Yan, Email: huyanz025@163.com
  • Supported by:
    Chongqing Science and Health Joint Medical Research Project(2022MSXM102);Chongqing Science and Health Joint Medical Research Project(2022MSXM066);The First Batch of Key Public Health Disciplines (Junior Colleges) in Chongqing((2022)72)

Abstract:

Objective: To analyze the resistance of multidrug-resistant tuberculosis (MDR-TB) patients to fluoroquinolones (FQs) and its influencing factors in Chongqing. Methods: A simple random sampling method was used in 165 MDR-TB patients from 39 districts (counties) in Chongqing from January 2020 to December 2022 (study subjects), and basic information of the study subjects was collected. All the 165 strains of multidrug-resistant Mycobacterium tuberculosis (MDR-MTB) isolated from the study subjects were confirmed through strain identification and proportional drug sensitivity testing. Using the micro broth dilution method, the drug sensitivities of clinical isolates to ofloxacin (Ofx), levofloxacin (Lfx), and moxifloxacin (Mfx) were tested, and the drug resistance of the strains to FQs and related influencing factors were analyzed. Results: The total resistance rate of 165 MDR-MTB isolates to FQs was 37.6% (62/165), and the resistance rates to Ofx, Lfx, and Mfx were 37.6% (62/165), 37.0% (61/165), and 29.7% (49/165), respectively. Multivariate logistic regression analysis showed that no history of FQs medication was a protective factor for FQs resistance (OR (95%CI)=0.348 (0.169-0.717)). Conclusion: The FQs resistance rate of MDR-TB patients in Chongqing is relatively high, and patients with a history of FQs medication have a higher risk of FQs resistance.

Key words: Mycobacterium tuberculosis, Quinolones, Drug resistance, multiple, Risk factors

CLC Number: