Guide to Diagnostic Tests
Vancomycin-resistant Enterococcus (VRE)
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Organism
Vancomycin-resistant Enterococcus (VRE)
Emergence of VRE seen in both E. faecalis and E. faecium (most common) and at least 7 phenotypes (van A through van G).
VRE, especially E. faecium , usually demonstrates intrinsic resistance to cephalosporins, aminoglycosides, and β-lactam antibiotics.
Enterococci that acquire the van A gene are highly resistant to vancomycin and to teicoplanin. The location of this gene on a plasmid means that it can be spread between strains, and therefore identification of VRE may require contact isolation in the hospital by infection control.
Enterococci can also pass the van A gene cluster to S. aureus resulting in vancomycin-resistant S. aureus .
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Organism
Vancomycin-resistant Enterococcus (VRE)
Emergence of VRE seen in both E. faecalis and E. faecium (most common) and at least 7 phenotypes (van A through van G).
VRE, especially E. faecium , usually demonstrates intrinsic resistance to cephalosporins, aminoglycosides, and β-lactam antibiotics.
Enterococci that acquire the van A gene are highly resistant to vancomycin and to teicoplanin. The location of this gene on a plasmid means that it can be spread between strains, and therefore identification of VRE may require contact isolation in the hospital by infection control.
Enterococci can also pass the van A gene cluster to S. aureus resulting in vancomycin-resistant S. aureus .
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