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Table 3 Distribution of resistance phenotypes and antimicrobial resistance genes detected in InPEC and ExPEC isolates

From: Genetic diversity and multidrug resistance of phylogenic groups B2 and D in InPEC and ExPEC isolated from chickens in Central China

Antimicrobial classes

Antimicrobial agents

APEC(n = 58)

Resistance genes

InPEC

InPEC

(n = 58)

(n = 48)

(n = 10)

 

β-lactamases

Cefepime

4 (8.33)

1 (10.00)

TEM(1, 1.72%)

SHV(24, 41.38%)

OXA(3, 5.17%)

CTX-M(33,56.9%)

Cefotaxime

12 (25.00)

3 (30.00)

Ceftazidime

8 (16.67)

2 (20.00)

cephalothin

12 (25.00)

4 (40.00)

cefuroxime

11 (22.92)

3 (30.00)

piperacillin

13 (27.08)

4 (40.00)

Cefoxitin

3 (6.25)

1 (10.00)

Aztreonam

7 (14.58)

2 (20.00)

Aminoglycosides

Amikacin

2 (4.17)

0 (0.00)

strA(48, 82.76%)

strB(31, 53.45%)

aadA (1, 1.72%)

Kanamycin

16 (33.33)

5 (50.00)

Streptomycin

42 (87.50)

7 (70.00)

Gentamicin

9 (18.75)

6 (60.00)

Spectinomycin

6 (12.50)

2 (20.00)

Fluoroquinolones/Quinolones

Ciprofloxacin

13 (27.08)

3 (30.00)

gyrA(S83L)

(36, 62.06%)

gyrA(D87N)

(17, 29.31%)

Enrofloxacin

12 (25.00)

3 (30.00)

Nalidixic acid

30 (62.50)

8 (80.00)