Here, we present the case of a 52-year-old patient who presented with fever, chills, and weight loss. Further workup revealed Bartonella endocarditis of the aortic valve. After six weeks of antibiotics, a follow-up transthoracic echocardiogram showed a decrease in the size of vegetation. Serologic testing based on epidemiologic history should be obtained for the workup of blood culture-negative endocarditis.
Keywords: aortic valve insufficiency; bartonella endocarditis; blood culture-negative endocarditis; immunofluorescence assays; mobile aortic vegetation.
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