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Table 2 Antimicrobial susceptibilities and minimum inhibitory concentrations of 45 isolates of Streptococcus gallolyticus subsp. pasteurianus

From: Microbiological and clinical characteristics of Streptococcus gallolyticus subsp. pasteurianus infection in China

Antimicrobials

Breakpoint by CLSI

Susceptibility

MIC

  

S(%)

I(%)

R(%)

MIC50

(mg/l)

MIC90

(mg/l)

Range

(mg/l)

Penicillin

0.12/0.25–2/4

100

0

0

0.125

0.125

< 0.03–0.12

Amoxicillin

0.25/0.5–4/8

100

0

0

< 0.25

< 0.25

all < 0.25

Cefotaxime

1/2/4

100

0

0

< 0.5

< 0.5

all < 0.5

Erythromycin

0.25/0.5/1

11.1(5/45)

0

88.9(40/45)

> 4

> 4

0.0625- > 4

Clindamycin

0.25/0.5/1

11.1(5/45)

0

88.9(40/45)

> 4

> 4

0.0625~ > 4

Levofloxacin

2/4/8

73.3(33/45)

15.6(7/45)

11.1(5/45)

2

4

1~ > 4

Moxifloxacin

1/2/4

88.9(40/45)

2.2(1/45)

8.9(4/45)

0.5

1

≤0.25~ > 2

Tetracycline

2/4/8

4.4(2/45)

2.2(1/45)

93.3(42/45)

> 8

> 8

0.0625~ > 4

Linezolid

2

100

0

0

≤1

2

≤1~2

Meropenem

0.5

100

0

0

≤0.0625

≤0.0625

≤0.0625

Vancomycin

1

100

0

0

≤0.25

≤0.25

≤0.25–1

  1. MIC minimum inhibitory concentration, S susceptible, I intermediate, R resistant, MIC50 minimum inhibitory concentration at which 50% of isolates were inhibited, MIC90 minimum inhibitory concentration at which 90% of isolates were inhibited, MIC range range of minimum inhibitory concentration