A rare case of aerococcus urinae infective endocarditis

Abstract

Introduction: Aerococcus urinae is a rare cause of infective endocarditis. Aerococcus is a gram positive cocci that is easily misidentified as Staphylococci or Streptococci. The true incidence rate of this pathogen is likely underestimated. Recent advances in laboratory diagnostic methods with matrix-associated laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) have lead to increased recognition of this pathogen in the clinical microbiology lab, and awareness as a cause of infective endocarditis in the infectious disease community.Case reports:Aerococcus usually affects males with underlying urinary tract conditions. Herein, we report a case of prosthetic aortic valve endocarditis caused byAerococcus urinae.Discussion:Our patient was considered high risk for cardiac surgery and was treated successfully with intravenous antibiotics alone for six weeks.Conclusion:Infective endocarditis should be considered in all cases ofAerococcusbacteremia and appropriate diagnostic evaluations pursued.Abbreviations:AV: Aortic valve; IE: Infective endocarditis.