Figure 1From: USA’s expanded overseas tuberculosis screening program: a retrospective study in ChinaSummary of overseas tuberculosis screening algorithm based on the Technical Instructions for Tuberculosis Screening and Treatment Using Cultures and Directly Observed Therapy. AFB = acid-fast bacilli, IGRA = interferon-gamma release assays, MTB = Mycobacterium tuberculosis, PTB = pulmonary tuberculosis, TB = tuberculosis.Back to article page