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Table 3 Geno- and phenotypic data of ESBL-E clusters during October 2011–May 2014

From: Characterisation of and risk factors for extended-spectrum β-lactamase producing Enterobacterales (ESBL-E) in an equine hospital with a special reference to an outbreak caused by Klebsiella pneumoniae ST307:CTX-M-1

Species

PFGEcluster

No. of isolates

MLST typea

 

Antibiogramc

bla geneb

AK

CN

AMC

CPD

SXT

ENR

DO

K. pneumoniae

A

40

ST 307

CTX-M-1, SHV, TEM

S

R

I/R

R

R

R

Rd

 

B

4

ST 107

CTX-M-1, SHV

S

R

I/R

R

R

S

R

E. coli

C

8

ST 167

CTX-M-9, TEM

S

R

S/R

R

R

R

Rd

E. coli

D

3

ST 167

CTX-M-1, TEM

S

R

R

R

R

R

R

E. coli

E

2

ST 141

SHV, TEM

S

R

I

R

R

S

R

E. coli

Fe

2

ST 8107

SHV, TEM

S

R

S

R

R

S

R

E. coli

G

2

Unidentified Type

CTX-M-1, TEM

S

R

I

R

R

I

S

E. cloacae

H

9

–

SHV, TEM

S

R

R

R

R

R

S/R

E. cloacae

I

6

–

SHV, TEM

S/I

R

R

R

R

S

R

E. cloacae

J

3

–

SHV, TEM

S

R

R

R

R

I

R

E. cloacae

K

2

–

SHV, TEM

S

R

R

R

R

S/R

R

E. cloacae

L

2

–

SHV, TEM

S

R

R

R

R

I/R

R

E. cloacae

M

2e

–

SHV, TEM, TEMf

S

R

R

R

R

S

R

K. oxytoca

N

4

–

CTX-M, TEM, SHV

S

R

S

R

R

S

R

K. oxytoca

O

2

–

CTX-M, TEM, SHVg

S

R

S

R

R

S

R

Citrobacter spp.

P

2

–

SHV, TEM

S

R

R

R

R

I

R

E. aerogenes

Q

2

–

SHV, TEM

S

R

R

R

R

S

R

  1. Geno- and phenotypic description of the extended-spectrum β-lactamase producing Enterobacterales (ESBL-E) clusters from the equine and environmental specimens obtained at the Equine Veterinary Teaching Hospital (EVTH) during the study period. Single type representatives are excluded
  2. aAltogether, 7 representative isolates of K. pneumoniae and 28 isolates of E. coli were investigated in MLST
  3. bIn addition to multiplex-PCR results, CTX-M gene group was determined by sequencing for representative isolates. TEM = wild-type TEM
  4. cAK amikacin, CN gentamicin, AMC amoxicillin/clavulanic acid, CPD cefpodoxime, SXT sulphamethoxazole/trimethoprim, ENR enrofloxacin, DO doxycycline, R resistant, I intermediate, S susceptible. Susceptibility annotated with a division sign indicates susceptibilities of different isolates
  5. dOne isolate was sensitive to doxycycline
  6. eIncludes two surface hygienic specimens
  7. fOne isolate carried blaTEM only
  8. gOne isolate carried blaSHV and blaTEM only
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Acta Veterinaria Scandinavica

ISSN: 1751-0147