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Table 2 Antibiogram profiles of the recovered E. coli isolates (n = 19)

From: Virulence determinant and antimicrobial resistance traits of Emerging MDR Shiga toxigenic E. coli in diarrheic dogs

Antimicrobial classes

Antimicrobial agents

Sensitive

Intermediate

Resistant

n

%

n

%

n

%

Penicillins

Amoxicillin (AMX)

3

15.8

0

0

16

84.2

Amoxicillin-Clavulanic acid (AMC)

1

5.2

5

26.3

13

68.4

Cephalosporins

Cefotaxime (CTX)

2

10.5

9

47.3

8

42.1

Ceftazidime (CAZ)

0

0

11

57.9

8

42.1

Carbapenems

Meropenem (MEM)

15

78.94

1

5.26

3

15.8

Sulfonamide

Trimethoprim-Sulfamethoxazole (SXT)

0

0

0

0

19

100

Aminoglycoside

Amikacin (AK)

3

15.8

13

68.4

3

15.7

Glycylcycline

Tigecycline (TCG)

12

63.2

7

36.8

0

0

Fluroquinolones

Levofloxacin (LEV)

12

63.2

0

0

7

36.8

Monobactam

Aztreonam (ATM)

11

57.9

8

42.1

0

0

Tetracycline

Tetracycline (TE)

0

0

0

0

19

100

Polymyxins

Colistin sulfate (CT)

9

47.3

2

10.5

8

42.1

p value

p < 0.0001*

p < 0.0001*

p < 0.0001*

Chi square

62.235

54.143

58.231

  1. *Significant differences were noticed between AMX and TCG: X2 = 7.6842, p = 0.02145, AMX and ATM: X2 = 7.6842, p = 0.02145, AMX and SXT: X2 = 7.6842, p = 0.02145, AMX and TE: X2 = 7.6842, p = 0.02145, AMX and LEV: X2 = 6.107, p = 0.047, CTX and CAZ: X2 = 15.119, p < 0.0001, CAZ and CT: X2 = 15.119, p < 0.0001, MEM and TCG: X2 = 8.8947, p = 0.00286, MEM and ATM: X2 = 8.8947, p = 0.00286, MEM and TE: X2 = 8.8947, p = 0.00286, MEM and SXT: X2 = 8.8947, p = 0.00286, MEM and AK: X2 = 12.223, p < 0.0001, SXT and AK: X2 = 8.8947, p = 0.00286, TE and AK: X2 = 8.8947, p = 0.00286, AK and ATM: X2 = 8.8947, p = 0.00286, AK and TCG: X2 = 8.8947, p = 0.00286