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Table 1 Susceptibilities of S. typhi and S. paratyphi A to 12 antimicrobial agents

From: Genetic Diversity of Salmonella enteric serovar Typhi and Paratyphi in Shenzhen, China from 2002 through 2007

Antimicrobial agents

S. typhi(N = 25)

S. paratyphi A (N = 64)

 

R%

S%

MIC 50

(μg/mL)

MIC 90

(μg/mL)

R%

S%

MIC 50

(μg/mL)

MIC 90

(μg/mL)

Nalidixic acid

52

48

64

≥256

95.3

4.7

≥256

≥256

Norfloxacin

0

100

0.25

1

0

100

2

2

Ciprofloxacin

0

100

0.064

0.25

0

100

0.5

0.5

Levofloxacin

0

100

0.125

0.5

0

100

1

1

Gatifloxacin

0

100

0.064

0.25

0

100

0.5

1

Sparfloxacin*

-

-

0.125

1

-

-

1

2

Moxifloxacin*

-

-

0.125

0.5

-

-

1

1

Cefotaxime

0

100

0.064

0.064

1.6

98.4

0.125

0.5

Ceftriaxone

0

100

0.064

0.125

1.6

98.4

0.125

0.25

Ampicillin

4

96

1

4

1.6

98.4

2

4

Chloramphenicol

0

100

2

4

0

98.4

4

8

Trimethoprim/sulfamethoxazole

0

100

0.25

0.25

0

100

0.25

0.25

  1. * CLSI had no breakpoints for these agents
  2. R - Resistant
  3. S - Susceptible