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Jain A, Singh PK, Chooramani G, et al. Drug resistance and associated genetic mutations among patients with suspected MDR-TB in Uttar Pradesh, India. Int J Tuberc Lung Dis. 2016;20(7):870-5doi: 10.5588/ijtld.15.0874.
Jain, A., Singh, P. K., Chooramani, G., Dixit, P., & Malhotra, H. S. (2016). Drug resistance and associated genetic mutations among patients with suspected MDR-TB in Uttar Pradesh, India. The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease, 20(7), 870-5. https://doi.org/10.5588/ijtld.15.0874
Jain, A, et al. "Drug resistance and associated genetic mutations among patients with suspected MDR-TB in Uttar Pradesh, India." The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease vol. 20,7 (2016): 870-5. doi: https://doi.org/10.5588/ijtld.15.0874
Jain A, Singh PK, Chooramani G, Dixit P, Malhotra HS. Drug resistance and associated genetic mutations among patients with suspected MDR-TB in Uttar Pradesh, India. Int J Tuberc Lung Dis. 2016 Jul;20(7):870-5. doi: 10.5588/ijtld.15.0874. PMID: 27287637.
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Int J Tuberc Lung Dis. 2016 Jul;20(7):870-5. doi: 10.5588/ijtld.15.0874.

Drug resistance and associated genetic mutations among patients with suspected MDR-TB in Uttar Pradesh, India.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease

A Jain, P K Singh, G Chooramani, P Dixit, H S Malhotra

Affiliations

  1. Tuberculosis Laboratory, Department of Microbiology, King George's Medical University, Lucknow, India.
  2. Department of Neurology, King George's Medical University, Lucknow, India.

PMID: 27287637 DOI: 10.5588/ijtld.15.0874

Abstract

SETTING: Programmatic Management of Drug-Resistant Tuberculosis (PMDT) programme in 32 districts of Uttar Pradesh (UP), India.

OBJECTIVE: To provide epidemiological status of multidrug-resistant tuberculosis (MDR-TB) and associated microbial genetic mutations among suspected cases in UP.

DESIGN: We retrospectively studied and tested using line-probe assay (LPA) 4895 retreatment patients with suspected MDR-TB who were enrolled for PMDT during 2012-2015. The demographic characteristics of cases, LPA-determined drug resistance, the genetic mutation profile, trends in drug resistance over the study period as well as the comparative performance of LPA and phenotypic drug susceptibility testing (DST) were analysed.

RESULTS: MDR-TB and rifampicin-resistant TB (RR-TB) were confirmed in respectively 34.5% and 40.3% cases. The RR-TB detection rate (a valid proxy for MDR-TB) initially declined during the study period. Age ⩿30 years and implemented MDR-TB suspicion criteria were independent predictors for RR-TB (P < 0.01). LPA indicated predominant distribution of S531L (1483/1970, 75.3%) and S315T1 (1981/2116, 93.6%) mutations in the rpoB and katG genes, respectively, and had >94.0% agreement with phenotypic DST in determining rifampicin/isoniazid resistance.

CONCLUSION: MDR-TB prevalence in retreatment cases is very high, highlighting the need to reduce the development and transmission of drug-resistant TB.

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