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http://dx.doi.org/10.4046/trd.2012.72.2.140

Prevalence and Risk Factors for Mycobacterium tuberculosis Infection among Contacts of Pulmonary Tuberculosis Patients  

Park, Jae-Seuk (Department of Internal Medicine, Dankook University College of Medicine)
Publication Information
Tuberculosis and Respiratory Diseases / v.72, no.2, 2012 , pp. 140-148 More about this Journal
Abstract
Background: Detection and treatment of tuberculosis (TB) infection with contact investigation is a key component of TB control program. I evaluated the prevalence and risk factors for TB infection among contacts of recently diagnosed pulmonary TB patients in a tertiary hospital in Korea. Methods: 206 contacts of 90 adult pulmonary TB patients underwent tuberculin skin tests (TST) and chest radiography. The TST results were considered positive with an induration of 10 mm or more, suggesting TB infection. A standardized questionnaire was used to assess risk factors associated with TB infection. Results: TST was positive in 97 of 206 contacts of TB patients (47.1%) and positive rate of TST increased with age. The risk of TB infection was significantly associated with close contact with TB patients (sleeping in the same room) (odd ratio [OR], 4.94; 95% confidence interval [CI], 1.43~17.00). Conclusion: TB infection rate was higher in the elderly, and the risk of TB infection was significantly increased with close contact of TB patients.
Keywords
Tuberculosis; Contact Tracing; Tuberculin Test;
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