An In-House RD 1-Based Enzyme-Linked Immunospot – Gamma Interferon Assay Instead of the Tuberculin Skin Test for Diagnosis of Latent Mycobacterium tuberculosis Infection

An In-House RD1-Based Enzyme-Linked Immunospot–Gamma Interferon Assay Instead of the Tuberculin Skin Test for Diagnosis of Latent Mycobacterium tuberculosis Infection Luigi Codecasa, Paola Mantegani, Laura Galli, Adriano Lazzarin, Paolo Scarpellini, and Claudio Fortis* Villa Marelli Institute, Lombardy Regional Reference Centre for Tuberculosis, Niguarda Hospital, Milan, Italy; Clinic of Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy; and “Vita-Salute” San Raffaele University, Milan, Italy

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