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Prevalence of Latent Tuberculosis Infection among Spouses and First-Degree Relatives of Pulmonary Tuberculosis Cases in South India

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LTBI prevalence among household contacts was 58.1%, with spouses showing 64.2% versus 55.8% in first-degree relatives.
Significantly elevated risk (PRR: 1.42) was observed in spouses compared to first-degree relatives.
Cohort study assessed latent tuberculosis infection risk factors in household contacts of pulmonary TB patients.
Findings emphasize the importance of targeted screening for those with higher LTBI prevalence and associated risk factors.

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Cohort study finds 58.1% LTBI prevalence in household contacts, indicating risk factors highlight need for targeted screening.

Ezhumalai et al. (2025) studied this question.

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