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Lactococcus garvieae Endocarditis on a Prosthetic Biological Aortic Valve.

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Lactococcus garvieae (LG) endocarditis is a rare human infection. A 76-year-old man developed LG endocarditis on a prosthetic aortic valve after consuming raw fish sushi.

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Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Lactococcus garvieae (LG) is an emerging zoonotic pathogen causing rare human infections.
  • LG endocarditis is exceptionally uncommon, with fewer than 20 cases reported globally.
  • Risk factors and clinical presentations of LG endocarditis are not well-established.

Observation:

  • A 76-year-old male presented with symptoms suggestive of endocarditis.
  • The patient reported consuming raw fish sushi two weeks prior to admission.
  • Cardiac imaging revealed vegetation on the prosthetic aortic valve, not a native valve.

Findings:

  • The patient was diagnosed with Lactococcus garvieae endocarditis.
  • This case represents a rare instance of LG endocarditis in an elderly male.
  • The infection involved a prosthetic aortic valve, differing from most previously reported cases.

Implications:

  • This case highlights raw fish consumption as a potential transmission route for LG.
  • Prosthetic valve endocarditis due to LG is a rare but serious complication.
  • Further research is needed to understand LG pathogenesis and optimize treatment strategies for this rare infection.