Drug Malabsorption and Resistant Tuberculosis in HIV-Infected Patients

Abstract
Directly observed therapy for tuberculosis has been advocated as a way to improve compliance and control the emergence of drug resistance.1,2 We recently cared for two patients with human immunodeficiency virus (HIV) infection who were receiving therapy under direct observation when they relapsed with drug-resistant isolates of Mycobacterium tuberculosis, presumably due to subtherapeutic drug levels caused by malabsorption.

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