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Table 7 Frequency of virulence genes among antibiotic-resistant E. coli isolates

From: Phenotypic and molecular characterizations of multidrug-resistant diarrheagenic E. coli of calf origin

Antibiotic resistance (beef and dairy cattle) Beef cattle E. coli carry virulence genes
n (%) 		Dairy cattle E. coli carry virulence genes
n (%)
Irp2 fyuA Stx1 F41 hylA eaeA Irp2 fyuA F41 Stx1 eaeA K99 STa
PEN 28/43 27/43 10/43 7/43 1/43 1/43 6/27 6/27 4/27 1/27 1/27 1/27 1/27
(43) and (27) 65.1% 62.8% 23.3% 16.9% 0.02% 0.02% 22.2% 22.2% 14.8% 3.7% 3.7% 3.7% 3.7%
AMC 18/24 13/24 4/24 7/24 0/24 0/24 6/22 5/22 4/22 1/22 1/22 1/22 1/22
(24) and (22) 75% 54.2% 16.7% 25.9% 0% 0% 27.3% 22.7% 18.2% 0.05% 0.05% 0.05% 0.05%
AMP 25/38 22/38 7/38 7/38 1/38 1/38 6/26 5/26 4/26 1/22 1/22 1/22 1/22
(38) and (26) 65.8% 57.9% 18.4% 18.4% 0.03% 0.03% 23.1% 19.2% 15.4% 0.05% 0.05% 0.05% 0.05%
CFZ 17/21 11/21 3/21 7/21 0/21 0/21 4/19 4/19 4/19 1/22 1/22 1/22 1/22
(21) and (19) 80.9% 52.4% 14.3% 33.3% 0% 0% 21.1% 21.1% 21.1% 0.05% 0.05% 0.05% 0.05%
STR 16/22 12/22 4/22 7/20 0/18 0/18 4/18 4/18 4/18 1/22 1/22 1/22 1/22
(22) and (18) 72.7% 54.5% 18.2% 35% 0% 0% 22.2% 22.2% 22.2% 0.05% 0.05% 0.05% 0.05%
GEN 16/20 11/20 4/20 6/20 0/20 0/20 3/17 2/17 0/17 0/17 0/17 0/17 0/17
(20) and (17) 80% 55% 20% 30% 0% 0% 17.6% 11.8% 0% 0% 0% 0% 0%
KAN 14/19 11/19 4/19 6/19 0/19 0/19 2/12 2/12 3/12 0/12 0/12 1/22 1/22
(19) and (12) 73.7% 57.9% 21.1% 31.6% 0% 0% 16.7% 16.7% 25% 0% 0% 0.05% 0.05%
TET 22/31 17/31 7/31 7/31 1/31 1/31 6/21 5/21 4/21 1/21 1/21 1/21 1/21
(31) and (21) 70.9% 54.8% 22.6% 22.6% 0.03% 0.03% 28.6% 23.8% 19% 0.05% 0.05% 0.05% 0.05%
COM 18/26 14/26 4/26 7/26 0/26 0/26 5/21 5/21 4/21 1/21 1/21 1/21 1/21
(26) and (21) 69.2% 53.8% 15.9% 26.9% 0% 0% 23.8% 23.8% 19% 0.05% 0.05% 0.05% 0.05%
SULF 20/30 16/30 5/30 7/30 1/30 1/30 6/22 6/22 4/22 1/22 1/22 1/22 1/22
(30) and (22) 66.7% 53.3% 16.7% 23.3% 0.03% 0.03% 27.3% 27.3% 18.2% 0.05% 0.05% 0.05% 0.05%
CIP 18/22 12/22 4/22 6/22 0/22 0/22 4/18 3/18 4/18 0/18 1/18 1/18 1/18
(22) and (18) 81.8% 54.5% 18.2% 27.3% 0% 0% 22.2% 16.7% 22.2% 0% 0.06% 0.06% 0.06%
ENR 18/23 12/23 4/23 7/23 0/23 0/23 4/17 3/17 3/17 1/17 0/17 1/17 1/17
(23) and (17) 78.3% 52.1% 17.4% 30.4% 0% 0% 23.5% 17.6% 17.6% 0.06% 0% 0.06% 0.06%
OFX 17/19 13/19 4/19 6/19 0/19 0/19 3/17 3/17 3/17 0/17 0/17 0/17 0/17
(19) and (17) 89.5% 68.4% 21.1% 31.6% 0% 0% 17.6% 17.6% 17.6% 0% 0% 0% 0%
FFC 12/17 7/17 2/17 7/17 0/17 0/17 2/9 2/9 1/9 1/9 1/9 0/9 0/9
(17) and (9) 70.6% 41.2% 11.8% 41.2% 0% 0% 22.2% 22.2% 11.1% 11.1% 11.1% 0% 0%
PB 0/1 1/1 0/1 0/1 0/1 0/1 0/0 0/0 0/0 0/0 0/0 0/0 0/0
(1) and (0) 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%
  1. Note: β-lactams: penicillin (PEN), amoxicillin (AMC), ampicillin (AMP), and cefazolin (CFZ); aminoglycosides: streptomycin (STR), gentamicin (GEN), and kanamycin (KAN); tetracyclines: tetracycline (TET); sulfonamides: compound sulfamethoxydiazine (SULF); fluoroquinolones: ciprofloxacin (CIP), enrofloxacin (ENR), and ofloxacin (OFX); chloramphenicol: florfenico (FFC); polypeptides: polymyxin B (PB)
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Animal Diseases

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