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Table 4 Observed combinations of β-lactamase and PMQR genes according to bacterial species

From: Multiresistant extended-spectrum β-lactamase-producing Enterobacteriaceae from humans, companion animals and horses in central Hesse, Germany

Combination of resistance genesa

Outpatients

Inpatients

Dogs

Cats

Horses

 

% of bacterial species (no. of isolates)

 

EC

KP

KO

EN

OS b

EC

KP

KO

EN

OS b

EC

KP

KO

EN

OS b

EC

KP

KO

EN

OS b

EC

KP

KO

EN

OS b

TEM Pen /CTX-M

50 (24)

    

26.9 (25)

12 (3)

   

17.1 (6)

    

20 (1)

    

40.7 (35)

   

25 (1)

TEM Pen /CTX-M/PMQR

 

25 (1)

   

1.2 (1)

  

25 (1)

 

2.9 (1)

    

20 (1)

  

33.3 (1)

 

8.1 (7)

    

TEM Pen /CTX-M/OXA Pen

2.1 (1)

 

33.3 (1)

  

2.2 (2)

    

14.3 (5)

         

12.8 (11)

10 (1)

   

TEM Pen /CTX-M/OXA Pen /PMQR

4.2 (2)

25 (1)

   

8.6 (8)

8 (2)

   

8.6 (3)

18.2 (4)

100 (1)

12.5 (1)

 

20 (1)

    

1.2 (1)

40 (4)

   

TEM Pen /SHV Pen /CTX-M/OXA Pen /PMQR

      

4 (1)

    

9.1 (2)

         

20 (2)

   

TEM Pen /SHV Pen /CTX-M/OXA Pen /OXA Carba /PMQR

           

22.7 (5)

             

TEM Pen /CTX-M/OXA Pen /OXA Carba /PMQR

           

27.3 (6)

    

50 (1)

        

CTX-M/OXA Pen /PMQR

8.3 (4)

    

14 (13)

12 (3)

   

17.1 (6)

    

20 (1)

    

3.5 (3)

    

TEM Pen /SHV Pen /OXA Carba /PMQR

             

37.5 (3)

           

CTX-M/PMQR

     

2.2 (2)

 

20 (1)

  

5.7 (2)

  

12.5 (1)

    

33.3 (1)

      

CTX-M/OXA Pen

8.3 (4)

    

6.5 (6)

8 (2)

   

2.9 (1)

    

20 (1)

    

8.1 (7)

    

Other combinations

2.1 (1)

25 (1)

   

3.2 (3)

16 (4)

    

22.7 (5)

 

12.5 (1)

  

50 (1)

 

33.3 (1)

  

20 (2)

   

No resistance gene detected

4.2 (2)

    

14 (13)

12 (3)

 

50 (2)

 

8.6 (3)

  

12.5 (1)

100 (1)

     

2.3 (2)

    

Single resistance gene

20.8 (10)

25 (1)

66.7 (2)

  

21.5 (20)

28 (7)

80 (4)

25 (1)

100 (1)

22.9 (8)

  

12.5 (1)

 

20 (1)

   

1

23.3 (20)

10 (1)

  

75 (3)

Total no. of isolates

48

4

3

0

0

93

25

5

4

1

35

22

1

8

1

5

2

0

3

1

86

10

0

0

4

  1. EC, Escherichia coli; KP, Klebsiella pneumoniae; KO, Klebsiella oxytoca; EN, Enterobacter cloacae; OS, Other species.
  2. aTEMPen, TEM Penicillinase, OXAPen, OXA Pencillinase, OXACarba, OXA Carbapenemase, SHVPen, SHV Penicillinase.
  3. bOther species include Enterobacter intermedius (n = 2). Enterobacter gergoviae (n = 1), Citrobacter freundii (n = 1), and Proteus mirabilis (n = 1), Providencia stuartii (n = 1), Morganella morganii (n = 1).