The Time of Positive Conversion of Interferon-γ Releasing Assay After Tuberculosis Exposure
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The aim is to evaluate the time of positive conversion after exposure to smear positive pulmonary tuberculosis (TB) in a platoon of Korean military, a closed communal setting.
Condition or disease
In a platoon where TB outbreak occurred, we performed low dose chest CT (LDCT), QuantiFERON-TB gold in tube (QFT) and two-step (0, 4weeks) TST for outbreak investigation. We perform QFT at 0, 2, 4, 8 and 12 weeks after initial investigation for soldiers with negative QFT results, and soldiers with positive QFT and normal LDCT took isoniazid and rifampin for 3 months as treatment of latent TB.
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Ages Eligible for Study:
Child, Adult, Senior
Sexes Eligible for Study:
Accepts Healthy Volunteers:
A military unit in South Korean Army
All soldiers who assigned to the military platoon where a tuberculosis outbreak occurred
Soldiers who could not complete study or refused the study protocol