Latent Tuberculosis Infection (LTBI) is most commonly treated with which single-drug regimen?
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Correct answer: Isoniazid for 6 to 9 months
Isoniazid monotherapy for 6 to 9 months is the traditional standard for latent tuberculosis infection and prevents progression to active disease. Shorter rifamycin-based regimens are now also widely used, but ethambutol and pyrazinamide are not given as single-drug treatment for latent infection.
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