Epidemiological Trends of Drug-Resistant Tuberculosis in China From 2007 to 2014: A Retrospective Study. Issue 15 (April 2016)

• Record Type: Journal Article
• Authors: He, Xiao-chun; Zhang, Xian-xin; Zhao, Jiang-nan; Liu, Yao; Yu, Chun-bao; Yang, Guo-ru; Li, Huai-chen
• Other Names: Paraskevis. Dimitrios section editor.
• Is Part Of: Medicine. Volume 95:Issue 15(2016)
• Publication Date: 2016-04
• Subjects: Medicine -- Periodicals; Medicine -- Periodicals; Médecine -- Périodiques; Geneeskunde; Medicine; Periodicals; Periodicals; 610.5
• DOI: 10.1097/MD.0000000000003336
• Languages: English
• ISSNs: 0025-7974

Abstract

Abstract : Abstract: The emergence and spread of drug-resistant tuberculosis (DR-TB) has become the major concern in global TB control nowadays due to its limited therapy options and high mortality. A comprehensive evaluation for the epidemiological trends of DR-TB in mainland China, of which TB incidences remain high, is essential but lacking. This study aimed to describe the trends of DR-TB overtime, especially multidrug-resistant TB (MDR-TB); and to identify unique characteristics of MDR-TB cases compared with drug-susceptible TB cases in Mainland China. We retrospectively analyzed surveillance data collected from 36 TB prevention and control institutions in Shandong Province, China over an 8-year period. Unique characteristics of MDR-TB were identified; Chi-square test for trends and linear regression were used to assess the changes in proportions of different resistance patterns overtime. The overall MDR rate was 6.2% in our sample population. There were no statistically significant changes in the percentage of drug-susceptible, isoniazid (INH) resistance, ethambutol (EMB) resistance, streptomycin (SM) resistance, and MDR TB during our study period except that the overall rifampin (RFP) resistance and rifampin monoresistance (RMR) increased at a yearly rate of 0.2% and 0.1%, respectively. Among those with known treatment histories, a higher MDR rate of 8.7% was observed, in which 53.9% were primary MDR-TB patients, and this rate was increasing at a yearly rate of 4.1% over our study period. MDR-TB patients were more likely to be female (odds ratio [OR], 1.23; 95% confidence interval [CI], 1.05–1.34), aged 25 to 44 years (OR, 1.67; 95%CI, 1.45–1.93), retreated (OR, 11.95; 95%CI, 9.68–14.76), having prior TB contact (OR, 1.89; 95%CI, 1.19–2.78) and having cavity (OR, 1.57; 95%CI 1.36–1.81), or bilateral disease (OR, 1.45; 95%CI 1.19–1.76) on chest radiology. Persistent high levels of MDR-TB, increasing rates of primary MDR-TB and RMR characterize DR-TB cases in mainland China; community-acquired drug resistance may be one of the most modifiable factors in future TB control strategies.