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Acute Focal Myocarditis Secondary to Severe Legionella Infection: A Case Report and Review of the Literature

Legionnaire’s disease (LD) is a severe form of atypical pneumonia caused by any species of Legionella. LD can rarely involve the heart and present as myocarditis, pericarditis, or endocarditis. We report a case of focal myocarditis secondary to Legionella. A 49-year-old male was admitted to the hospital for shortness of breath and found to have Legionella pneumonia. An echocardiogram was done because of elevated troponin and shortness of breath, which revealed the new onset of systolic heart failure and focal hypokinesis. The patient received a total of 10 days of levofloxacin 750 mg, and he was discharged home with a cardiology follow-up. This case highlights that Legionella infection should be suspected in patients with unexplained myocardial damage/inflammation.