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National shortage of tuberculin skin test antigens

Corresponding author: David Sotello Contact Information: David.sotello@ttuhsc.edu DOI: 10.12746/swrccc.v7i30.570 Adequate identification and treatment of patients with latent tuberculous infection (LTI) is a matter of high importance in public health. Persons with the highest risk factor(s) for LTI include close contacts with active tuberculosis cases, drug users, immigrants from certain areas, health care workers, immunocompromised patients, and patients with renal failure, etc.