Acute myopericarditis due to human granulocytic anaplasmosis supplementary materials

We present a case of a 54-year-old gentleman with a history of hypertension and chronic HIV who
presented with fever and epigastric pain, found to have elevated troponin-I levels and diffuse STsegement
elevations on ECG without clinical evidence of ischemia concerning for myopericarditis. Initial
laboratory findings also included thrombocytopenia and elevated aminotransferases as well as computed
tomography imaging revealing splenic infarcts. Given plausible exposure to ticks, this led to the eventual
diagnosis of anaplasmosis confirmed on PCR assay. CardiacMRI images confirmed myocardial involvement,
which resolved with antibiotic treatment. While rare, cardiac involvement is possible sequelae of
anaplasmosis infection as illustrated by this case.