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Volume 11, Number 12—December 2005
Letter

Vancomycin-resistant Enterococcus faecium Clone in Swine, Europe

Carla Novais*, Teresa M. Coque†, Patrick Boerlin‡, Inmaculada Herrero§, Miguel A. Moreno§, Lucas Dominguez§, and Luísa Peixe*Comments to Author 
Author affiliations: *REQUIMTE at Universidade do Porto, Porto, Portugal; †Hospital Universitario Ramón y Cajal, Madrid, Spain; ‡University of Guelph, Ontario, Canada; §Universidad Complutense de Madrid, Madrid, Spain

Main Article

Table

Features of vancomycin-resistant Enterococcus faecium swine isolates from European countries*

Isolate PFGE purK Antimicrobial-drug susceptibility (mg/L)*†
 Resistance genes† Mating‡
VC TC AMP TET ER CP CL GM KM SM LIN DA NIT
Portugal§
7S4 A 9 >256 256 <2 64 32 <0,5 8 <256 1,000 <256 2 1 64 vanA
erm(B) 10–4
8S1 A3 ND >256 256 <2 32 >32 <0,5 16 <256 <256 <256 2 1 64 vanA
erm(B) 10–8
35S2 A4 ND >256 256 <2 64 >32 <0,5 8 <256 <256 <256 2 0.5 32 vanA
erm(B) ND
Spain¶
S1 A1 9 >256 128 <2 >64 >32 <0,25 8 <256 >2,000 >2,000 2 1 64 vanA
erm(B)
aphIII 10–5
S2 A2 ND >256 128 <2 64 >32 <0,25 8 <256 <256 <256 2 2 64 vanA
erm(B) 10–4
S8 A1' ND >256 128 <2 >64 >32 <0,25 8 <256 >2,000 2,000 2 0.5 64 vanA
erm(B)
aphIII 10–5
Switzerland#
4D A 9 >256 64 <2 64 >32 <0,25 <4 <256 <256 <256 2 4 64 vanA
erm(B) 10–5

*PFGE, pulsed-field gel electrophoresis; VC, vancomycin; TC, teicoplanin; AMP, ampicillin; TET, tetracycline; ER, erythromycin; CP, ciprofloxacin; CL, chloramphenicol; GM, high level of resistance to gentamicin; KM, high-level resistance to kanamycin; SM, high-level resistance to streptomycin; LIN, linezolid; DA, daptomycin; NIT, nitrofurantoin; ND, not done. All isolates were TN1546 type D.

†Antimicrobial resistance or resistance genes detected in transconjugants appear underlined.

‡Conjugation frequency is expressed as transconjugants per donors.

§First 2 isolates were collected in 1997; third in 1998.

¶S1 was isolated in 1998; S2, 1999; and S8, 2000.

#Isolate was collected in 1999.

Main Article

Page created: February 02, 2012
Page updated: February 02, 2012
Page reviewed: February 02, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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