Latent tuberculosis infection in rural China: baseline results of a population-based, multicentre, prospective cohort study
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recordid: | cdi_proquest_miscellaneous_1668267659 |
title: | Latent tuberculosis infection in rural China: baseline results of a population-based, multicentre, prospective cohort study |
format: | Article |
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ispartof: | The Lancet infectious diseases, 2015, Vol.15 (3), p.310-319 |
description: | Summary Background Prophylactic treatment of individuals with latent Mycobacterium tuberculosis infection is an essential component of tuberculosis control in some settings. In China, the prevalence of latent tuberculosis infection, and preventive interventions against this disease, have not been systematically studied. We aimed to assess the prevalence of latent tuberculosis and its associated risk factors in rural populations in China. Methods Between July 1, and Sept 30, 2013, we undertook a baseline survey of a population-based, multicentre, prospective cohort study of registered residents (≥5 years old) at four study sites in rural China. Eligible participants were identified by door-to-door survey with a household sampling design. We screened participants for active tuberculosis and history of tuberculosis then used a tuberculin skin test and an interferon-γ release assay (QuantiFERON [QFT]) to test for latent infection. We used odds ratios (ORs) and 95% CIs to assess variables associated with positivity of QFT and tuberculin skin tests. Findings 21 022 (90%) of 23 483 eligible participants completed a baseline survey. Age-standardised and sex-standardised rates of skin-test positivity (≥10 mm) ranged from 15% to 42%, and QFT positivity rates ranged from 13% to 20%. Rates of positivity for the tuberculin skin test and the QFT test were low in study participants younger than 20 years and gradually increased with age (p for trend |
language: | eng |
source: | Alma/SFX Local Collection |
identifier: | ISSN: 1473-3099 |
fulltext: | fulltext |
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