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Table 5 Antimicrobial susceptibility (%) of S. pseudintermedius , S. aureus , beta haemolytic streptococci and enterococci in non-repeated samples

From: Characterisation of bacterial growth and antimicrobial susceptibility patterns in canine urinary tract infections

Antimicrobial

Staphylococcus pseudintermedius

Staphylococcus aureus

Beta-hemolytic streptococci

Enterococci

(n = 60)

(n = 10)

(n = 33)

(n = 55)

BP S

% S

BP S

% S

BP S

% S

BP S

% S

Penicillin

β-lacta

10.0

β-lact

30.0

≤ 0.12

100

≤ 8

NR

Ampicillin

β-lact

10.0

β-lact

30.0

≤ 0.25

NR

≤ 8

87.0

Amoxicillin/Clavulanic acid

≤ 8

96.7

≤ 8

100

≤ 8

100

≤ 8

82.6

Cephalothin

≤ 2

98.3

≤ 2

100

≤ 2

100

≤ 2

13.0

Oxacillin

≤ 0.25

NRb

≤ 2

100

-

-

-

-

Gentamicin

≤ 2

98.3

≤ 2

100

≤ 2

0.0

≤ 2

30.4

Erythromycin

≤ 0.5

86.7

≤ 0.5

100

≤ 0.25

NR

≤ 0.5

34.8

Enrofloxacin

≤ 0.5

98.3

≤ 0.5

100

≤ 0.5

15.2

≤ 0.5

47.8

Tetracycline

≤ 4

66.7

≤ 4

90.0

≤ 2

63.6

≤ 4

65.2

Trimethoprim/Sulphametoxazole

≤ 2/38

95.0

≤ 2/38

100

≤ 2/38

100

≤ 2/38

87.0

Nitrofurantoin

≤ 32

100

≤ 32

100

≤ 32

100

≤ 32

82.6

  1. Breakpoints for susceptibility (BP S) (mg/L) are indicated. The number of samples is shown inside brackets. Results from the susceptibility testing of one beta-haemolytic streptococcus isolate were lost and are not presented.
  2. aβ-lact = beta-lactamase production.
  3. bNR = not relevant since the BP is outside of the range of concentrations tested.