[Evaluation of tuberculin skin test conversion and interferon-gamma release assay in diagnosis of tuberculosis infection].

Abstract

OBJECTIVE To compare PPD conversion with γ-interferon release assay (IGRA) in determining the newly Mycobacterium tuberculosis (MTB) infection during a TB outbreak. METHODS The 505 subjects exposed to a TB outbreak were divided into 3 groups based upon the induration diameters of PPD before the outbreak. The changes of PPD induration diameters were… (More)

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