DOI: 10.12890/2025_005367

A case of infective endocarditis caused by beta-lactam resistant Streptococcus alactolyticus

Authors

  • Melina Ntoga Department of Infectious Diseases, Second University Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupoli, Greece
  • Vasileios Emmanouil Department of Medicine, School of Health Sciences, Democritus University of Thrace, Alexandroupoli, Greece
  • Eirini Terzi Department of Infectious Diseases, Second University Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupoli, Greece
  • Vasilios Petrakis Department of Infectious Diseases, Second University Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupoli, Greece
  • Periklis Panagopoulos Department of Infectious Diseases, Second University Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupoli, Greece
  • Dimitrios Papazoglou Department of Infectious Diseases, Second University Department of Internal Medicine, University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupoli, Greece

melinant22@gmail.com

Keywords

Infective endocarditis, Streptococcus alactolyticus

Abstract

Background: Streptococcus alactolyticus is a rare cause of human infections, with limited reports of infective endocarditis (IE).
Case report: We present a case of a 68-year-old male with severe aortic stenosis who developed S. alactolyticus associated IE resistant to beta-lactams. Initial treatment with vancomycin and gentamicin led to temporary improvement, but the patient later developed complications, including splenic infarction and an aortic root abscess. Despite intensified antimicrobial therapy, he ultimately succumbed to multiorgan failure.
Conclusion: This case underscores the importance of early identification of resistant pathogens, appropriate antibiotic selection, and vigilant monitoring for complications. The rising incidence of beta-lactam resistance in streptococcal infections highlights the need for ongoing epidemiological surveillance and research to optimize treatment strategies.

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References

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Published

2025-04-10

Issue

Vol. 12 No. 5 (2025)

Categories

How to Cite

1.
Ntoga M, Emmanouil V, Terzi E, Petrakis V, Panagopoulos P, Papazoglou D. A case of infective endocarditis caused by beta-lactam resistant Streptococcus alactolyticus. EJCRIM [Internet]. 2025 Apr. 10 [cited 2026 Nov. 3];12(5). Available from: https://ejcrim.com/index.php/ejcrim/article/view/5367

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