A unique case of tri-valvular Serratia marcescens infective endocarditis complicated by innumerable emboli

Serratia marcescens (S. marcescens) is a gram negative bacterium rarely associated with cases of infective endocarditis (IE). Involvement of three cardiac valves, as evidenced by echocardiography, is uncommon as well. S. marcescens IE and tri-valvular endocarditis have been rarely described in literature.