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04.05.2018 | Original Paper

Guards in Prisons: A Risk Group for Latent Tuberculosis Infection

Journal of Immigrant and Minority Health
Luisa Arroyave, Yoav Keynan, Deny Sanchez, Lucelly López, Diana Marin, Maryluz Posada, Zulma Vanessa Rueda


To determine the prevalence and incidence of LTBI among prison guards and to the risk factors associated with infection. Two male prisons in Medellín and Itaguí, Colombia. A cohort study was conducted in adult prison guards that consented to participate. Exclusion criteria included: previous or current active TB, or conditions that preclude TST administration. We screened 194 guards and completed 155 TST administrations. The prevalence of LTBI was 55.8% in prison one, and 39.1% in prison two. The risk factors associated with LTBI diagnosis included drug use at least once in a lifetime (PR: 1.75; 95% CI 1.42–2.15) and male sex (PR: 2.16; 95% CI 1.01–4.62). The cumulative incidence of TST conversion over 6 months was 3.2%. All conversions occurred in prison 1. Our findings suggest an occupational risk for LTBI prevalence and incidence among guards (different prevalence and incidence according to the prison they work).

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