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Related Experiment Videos

Group-C beta-hemolytic streptococcal bacteremia.

J Berenguer1, I Sampedro, E Cercenado

  • 1Department of Clinical Microbiology, Gregorio, Marañón General Hospital, Madrid, Spain.

Diagnostic Microbiology and Infectious Disease
|February 1, 1992
PubMed
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Group-C beta-hemolytic streptococci (GCBHS) rarely causes bacteremia, often in adults with underlying conditions. Despite treatment, GCBHS bacteremia has a high mortality rate.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Clinical Medicine

Background:

  • Group-C beta-hemolytic streptococci (GCBHS) are an infrequent cause of bloodstream infections.
  • GCBHS represented 0.28% of positive blood cultures and 0.35% of documented bacteremias at the study hospital.

Purpose of the Study:

  • To investigate the clinical characteristics, outcomes, and species distribution of GCBHS bacteremia.
  • To determine the incidence and clinical significance of GCBHS bacteremia.

Main Methods:

  • Retrospective analysis of clinical data from 13 patients with GCBHS bacteremia over a 5-year period.
  • Identification of bacterial isolates to the species level.
  • Review of clinical syndromes, portals of entry, and patient outcomes.

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Main Results:

  • GCBHS bacteremia occurred in 10 adult patients with significant underlying diseases; seven episodes were community-acquired.
  • Common clinical presentations included primary bacteremia, pneumonia, and endocarditis.
  • Streptococcus equisimilis was the most common species identified; one isolate showed penicillin resistance, but no penicillin tolerance was observed.

Conclusions:

  • GCBHS bacteremia, though uncommon, is associated with significant morbidity and a high mortality rate (40%) even with appropriate antimicrobial therapy.
  • Underlying conditions and community acquisition are common features of GCBHS bacteremia.
  • Prompt diagnosis and effective treatment strategies are crucial for managing GCBHS infections.