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Table 4 Antimicrobial susceptibility test of ESBL–producing E. coli

From: Characteristics of extended-spectrum β-lactamase–producing Escherichia coli isolated from fecal samples of piglets with diarrhea in central and southern Taiwan in 2015

  Chiayi, n = 23 (%) Tainan, n = 6 (%) Pingtung, n = 25 (%) Total, N = 54 (%)
Antibiotic discs used Sa Ib Rc S I R S I R S I R
Ampicillin 0 0 23 (100.0) 0 0 6 (100.0) 0 0 25 (100.0) 0 0 54 (100.0)
Amoxicillin/clavulanic acid 3 (13.0) 8 (34.8) 12 (52.2) 2 (33.3) 1 (16.7) 3 (50.0) 6 (24.0) 11 (44.0) 8 (32.0) 11 (20.4) 20 (37.0) 23 (42.6)
Cephalothin 0 0 23 (100.0) 0 0 6 (100.0) 0 0 25 (100.0) 0 0 54 (100.0)
Ceftiofur 0 0 23 (100.0) 0 0 6 (100.0) 0 0 25 (100.0) 0 0 54 (100.0)
Amikacin 15 (65.2) 8 (34.8) 0 5 (83.3) 1 (16.7) 0 11 (44.0) 3 (12.0) 11 (44.0) 31 (57.4) 12 (22.2) 11 (20.4)
Gentamicin 12 (52.2) 3 (13.0) 8 (34.8) 1 (16.7) 0 5 (83.3) 4 (16.0) 0 21 (84.0) 17 (31.5) 3 (5.6) 34 (62.9)
Streptomycin 0 1 (4.4) 22 (95.6) 0 0 6 (100.0) 0 1 (4.0) 24 (96.0) 0 2 (3.7) 52 (96.3)
Doxycycline 3 (13.0) 10 (43.5) 10 (43.5) 2 (33.3) 2 (33.3) 2 (33.3) 2 (8.0) 9 (36.0) 14 (56.0) 7 (13.0) 21 (38.9) 26 (48.1)
Tetracycline 0 0 23 (100.0) 0 0 6 (100.0) 0 0 25 (100.0) 0 0 54 (100.0)
Nalidixic acid 1 (4.4) 0 22 (95.6) 0 0 6 (100.0) 2 (8.0) 0 23 (92.0) 3 (5.6) 0 51 (94.4)
Ciprofloxacin 1 (4.4) 0 22 (95.6) 0 0 6 (100.0) 3 (12.0) 0 22 (88.0) 4 (7.4) 0 50 (92.6)
Enrofloxacin 0 0 23 (100.0) 0 0 6 (100.0) 0 0 25 (100.0) 0 0 54 (100.0)
Florfenicol 0 1 (4.4) 22 (95.6) 0 0 6 (100.0) 0 4 (16.0) 21 (84.0) 0 5 (9.3) 49 (90.7)
Co-trimoxazole 6 (26.1) 0 17 (73.9) 0 0 6 (100.0) 2 (8.0) 0 23 (92.0) 8 (14.8) 0 46 (85.2)
  1. a: susceptible; b: intermediate resistant; c: resistant