Volume 11, Number 12—December 2005
Letter
Vancomycin-resistant Enterococcus faecium Clone in Swine, Europe
Table
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.
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