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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