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"Selection of Skin Test Antigens to Evaluate PPD Anergy."

Published in TB and Outbreaks Week, August 28th, 1995

According to the authors' abstract of an article published in Journal of Family Practice, "Background: A purified protein derivative (PPD) tuberculin skin test may be nonreactive because of cutaneous anergy, technical problems with the test, or absence of tuberculosis infection. This study investigated the sensitivity and specificity of five test agents in measuring cutaneous anergy when the PPD test is nonreactive. Agents evaluated include antigens for Candida, mumps, histoplasmin, tetanus, and Trichophyton. Methods: Delayed-type hypersensitivity skin test records were analyzed in 1113 patients admitted to the University of Texas Health Center at Tyler...

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