Table 3

Antibiotic susceptibility of the ceftriaxone-resistant isolates

Escherichia coli (n=83)
N (%)
Klebsiella (n=6)
N (%)
Others* (n=4)
N (%)
Total (n=93)
N (%)
Piperacillin-tazobactam73 (88.0)4 (66.7)1 (25.0)78 (83.9)
Cefepime35 (42.4)3 (50)2 (50.0)40 (43.0)
Aztreonam39 (47.0)2 (33.3)1 (25.0)42 (45.2)
Amikacin82 (98.8)5 (83.3)4 (100)91 (97.8)
Gentamicin75 (90.4)3 (50)2 (50.0)80 (86.0)
Nitrofurantoin73 (88.0)2 (33.3)1 (25.0)76 (81.7)
Sulfamethoxazole-trimethoprim32 (38.6)0 (0)0 (0)32 (34.4)
Ciprofloxacin48 (57.8)4 (66.7)1 (25.0)53 (57.0)
Fosfomycin63 (75.9)1 (16.7)0 (0)64 (68.8)
Ertapenem83 (100)6 (100)3 (75.0)92 (98.9)
Meropenem83 (100)6 (100)3 (75.0)92 (98.9)
  • *Others include Enterobacter species (2), Proteus mirabillis (1), Raoultella ornithinolyitca (1).