Trends in susceptibility of vancomycin-resistant Enterococcus faecium to tigecycline, daptomycin, and linezolid and molecular epidemiology of the isolates: results from the Tigecycline In Vitro Surveillance in Taiwan (TIST) study, 2006 to 2010

Antimicrob Agents Chemother. 2012 Jun;56(6):3402-5. doi: 10.1128/AAC.00533-12. Epub 2012 Apr 9.

Abstract

Among the 219 vancomycin-resistant Enterococcus faecium isolates collected in 20 Taiwanese hospitals from 2006 to 2010, all were susceptible to linezolid and daptomycin, and 98.6% were susceptible to tigecycline. There was a shift toward higher tigecycline MIC values (MIC(90)s) from 2006-2007 (0.06 μg/ml) to 2008-2010 (0.12 μg/ml). The MIC(90)s of daptomycin and linezolid remained stationary. Although pulsotypes among the isolates from the 20 hospitals varied, intrahospital spreading of several clones was identified in 13 hospitals.

MeSH terms

  • Acetamides / pharmacology*
  • Anti-Bacterial Agents / pharmacology*
  • Daptomycin / pharmacology*
  • Electrophoresis, Gel, Pulsed-Field
  • Enterococcus faecium / drug effects*
  • Linezolid
  • Microbial Sensitivity Tests
  • Minocycline / analogs & derivatives*
  • Minocycline / pharmacology
  • Molecular Epidemiology / methods*
  • Oxazolidinones / pharmacology*
  • Taiwan
  • Tigecycline
  • Vancomycin Resistance / genetics

Substances

  • Acetamides
  • Anti-Bacterial Agents
  • Oxazolidinones
  • Tigecycline
  • Minocycline
  • Linezolid
  • Daptomycin