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[Vancomycin resistant enterococci in Austria]

F Allerberger1, C Lass-Flörl, M P Dierich

  • 1Bundesstaatliche bakteriologisch-serologische Untersuchungsanstalt in Innsbruck, Universität Innsbruck.

Wiener Klinische Wochenschrift
|May 9, 1997
PubMed
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Oral vancomycin use in Austria is linked to vancomycin-resistant enterococci (VRE) outbreaks. This study analyzed VRE and vancomycin-sensitive enterococci (VSE) isolates, identifying VanA resistance and suggesting human vancomycin administration as a key factor.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Epidemiology

Context:

  • Vancomycin-resistant enterococci (VRE) pose a significant threat in healthcare settings.
  • Enterococci are common causes of hospital-acquired infections.
  • Previous studies have indicated a link between antibiotic use and resistance development.

Purpose:

  • To investigate the phenotypical and genotypical characteristics of vancomycin-resistant and sensitive enterococci isolates in Austria.
  • To determine the prevalence and genetic relatedness of VRE and VSE strains.
  • To explore potential sources and transmission routes of VRE in Austrian hospitals.

Summary:

  • Pheno- and genotypical analyses were performed on 9 VRE and 5 VSE isolates from Austrian hospitals.
  • VanA-type resistance was identified in VRE isolates, while one E. casseliflavus strain showed VanC-1 resistance.

Related Experiment Videos

  • Macro-restriction analysis revealed clonal spread among some VRE and VSE isolates.
  • Epidemiological investigations did not pinpoint a definitive transmission mode for VRE clusters.
  • The study suggests oral vancomycin administration in humans as a primary driver of VRE in Austrian hospitals.
  • The use of avoparcin as an animal feed supplement was also noted as a potential contributing factor, though its use was later prohibited.

    • Impact:

    • The findings highlight the critical role of antibiotic stewardship, particularly concerning vancomycin, in controlling VRE.
    • This research provides valuable data for public health interventions aimed at preventing and managing VRE infections in Austria and similar settings.
    • Understanding resistance mechanisms and transmission dynamics is crucial for developing effective treatment and control strategies against multidrug-resistant organisms.