Infective endocarditis caused by Pasteurella aerogenes possibly from a Dog

Abstract Background Pasteurella aerogenes is a gram-negative coccobacilli commensal in animals, rarely describe in human infection. We describe the first case of infective endocarditis caused by Pasteurella aerogenes, a rare pathogen in human infections that usually results from domestic animal bites. Case presentation This is a case of a 21-year old Taiwanese man who initially presented headache and intermittent fever without any specific neurologic sign. Investigations revealed a diagnosis of infective endocarditis with mitral valve involvement and blood culture growing P. aerogenes. He recovered well after surgical intervention with the completion of antibiotic therapy. Conclusion P. aerogenes cause human infection, mostly soft tissue infection by exposure to domestic animals and pets. Our case highlights that endocarditis should be considered in bacteremia with this pathogen.