{Reference Type}: Case Reports {Title}: Human Monocytic Ehrlichiosis Associated With Myocarditis and Hemophagocytic Lymphohistiocytosis. {Author}: Dahm CN;Yang BQ;Clark DE;Armstrong WC;Stevenson LW; {Journal}: JACC Case Rep {Volume}: 2 {Issue}: 3 {Year}: Mar 2020 暂无{DOI}: 10.1016/j.jaccas.2019.12.042 {Abstract}: We present 3 cases at a single institution of human monocytic ehrlichiosis resulting in myocarditis and hemophagocytic lymphohistiocytosis. Contrary to previously published studies in which case fatalities were only as high as 1%, 2 of the 3 patients we discuss experienced a fulminant course resulting in death despite appropriate doxycycline treatment. Human monocytic ehrlichiosis is rarely a cause of myocarditis and hemophagocytic lymphohistiocytosis, but a high degree of suspicion is important because early empirical therapy may decrease morbidity and mortality. (Level of Difficulty: Intermediate.).