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. 2015 May 22;2(2):ofv074. doi: 10.1093/ofid/ofv074

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© The Author 2015. Published by Oxford University Press on behalf of the Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.

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Figure 1. — Flowchart depiciting the breakdown of the study subjects. *Individuals with active pulmonary tuberculosis (TB), bacteriologically confirmed by sputum culture or molecular diagnostic analysis, that were not treated with anti-TB drugs for more than 7 days. **Patients were classified into the non-TB group based on negative sputum smear, culture (at least 3 times), and chest radiograph (read by pulmonologists) results. The healthy TB contacts exhibited a lack of clinical symptoms and a normal chest radiograph (read by pulmonologists), and they tested negative for the QuantiFERON-TB Gold-in-Tube test. Abbreviations: COPD, chronic obstructive pulmonary disease; MAC, Mycobacterium avium complex; MTB, Mycobacterium tuberculosis; RIF, rifampicin.