Prevalence of latent tuberculosis infection among tuberculosis laboratory workers in Iran

Mahshid Nasehi; Abdolrazagh Hashemi-Shahraki; Amin Doosti-Irani; Saeed Sharafi; Ehsan Mostafavi

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자료유형: 학술저널

저자정보: Mahshid Nasehi (Ministry of Health and Medical Education) Abdolrazagh Hashemi-Shahraki (Pasteur Institute of Iran) Amin Doosti-Irani (Hamadan University of Medical Sciences) Saeed Sharafi (Ministry of Health and Medical Education) Ehsan Mostafavi (Pasteur Institute of Iran)

저널정보: 한국역학회 Epidemiology and Health Epidemiology and Health Vol.39

발행연도: 2017.1

수록면: 1 - 8 (8page)

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OBJECTIVES: The risk of transmission of Mycobacterium tuberculosis from patients to health care workers (HCWs) is a neglected problem in many countries, including Iran. The aim of this study was to estimate the prevalence of latent tuberculosis (TB) infection (LTBI) among TB laboratory staff in Iran, and to elucidate the risk factors associated with LTBI. METHODS: All TB laboratory staff (689 individuals) employed in the TB laboratories of 50 Iranian universities of medical sciences and a random sample consisting of 317 low-risk HCWs were included in this cross-sectional study. Participants with tuberculin skin test indurations of 10 mm or more were considered to have an LTBI. RESULTS: The prevalence of LTBI among TB laboratory staff and low-risk HCWs was 24.83% (95% confidence interval [CI], 21.31 to 27.74%) and 14.82% (95% CI, 11.31 to 19.20%), respectively. No active TB cases were found in either group. After adjusting for potential confounders, TB laboratory staff were more likely to have an LTBI than low-risk HCWs (prevalence odds ratio, 2.06; 95% CI, 1.35 to 3.17). CONCLUSIONS: This study showed that LTBI are an occupational health problem among TB laboratory staff in Iran. This study reinforces the need to design and implement simple, effective, and affordable TB infection control programs in TB laboratories in Iran.

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