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Workup including bronchoalveolar lavage (BAL) and induced sputum for gram stain, acid fast stain and bacterial culture were negative for<jats:italic>Pneumocystis jirovecii<\/jats:italic>pneumonia and other opportunistic infectious agents. However, BAL was positive for<jats:italic>Legionella pneumophila<\/jats:italic>via PCR that was confirmed by a positive urinary<jats:italic>Legionella<\/jats:italic>antigen. 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