Infective endocarditis caused by Pasteurella aerogenes possibly from a Dog

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.