Table 4 Distribution of phenotypic multidrug resistance patterns and antimicrobial resistance genes among the retrieved A. hydrophila isolates.

From: Prevalence, multidrug resistance patterns, virulence and antimicrobial resistance genes of emerging MDR Aeromonas hydrophila strains retrieved from subclinical bovine mastitis

No. of Isolates

%

Type of resistance

Phenotypic resistance

Resistance genes

MAR

20

28.2

XDR

AMX, AMC, SXT, TE, CRO, GM, E, and C

blaTEM, blaCTX−M−1, blaOXA−1, tetA, aadA1, and sul1

0.89

11

15.5

MDR

AMX, AMC, SXT, TE, CRO, and E

blaTEM, blaCTX−M−1, blaOXA−1, tetA, and sul1

0.67

10

14.1

MDR

AMX, AMC, SXT, TE, and CRO

blaTEM, blaCTX−M−1, blaOXA−1, tetA, and sul1

0.56

6

8.4

XDR

AMX, AMC, SXT, TE, CRO, GM, and C

blaTEM, blaCTX−M−1, blaOXA−1, tetA, aadA1, and sul1

0.78

5

7

MDR

AMX, TE, CRO, GM, E, and C

blaTEM, blaCTX−M−1, tetA, and aadA1

0.67

5

7

MDR

AMX, AMC, SXT, TE, E, and C

blaTEM, blaOXA−1, tetA, and sul1

0.67

4

5.6

MDR

AMX, AMC, SXT, CRO, GM, and E

blaTEM, blaCTX−M−1, blaOXA−1, aadA1, and sul1

0.67

4

5.6

MDR

AMX, AMC, TE, and E

blaTEM, blaOXA−1, and tetA

0.44

3

4.2

MDR

AMX, SXT, TE, CRO, GM, and E

blaTEM, blaCTX−M−1, tetA, aadA1, and sul1

0.67

2

2.8

Resistant

AMX and E

blaTEM

0.22

1

1.4

MDR

AMX, AMC, and SXT

blaTEM, blaOXA−1, and sul1

0.33

  1. Amoxicillin (AMX), amoxicillin/clavulanic acid (AMC), ceftriaxone (CRO), tetracycline (TE), erythromycin (E), chloramphenicol (C), gentamycin (GM), and sulfamethoxazole/trimethoprim (SXT).