Table 5. Antibiotic resistance genotype profiles of L. monocytogenes recovered from milk and milk products.
Strain no | Antibiotic resistance genes | No of resistance genes | |||
Cheese | |||||
1 | blaTEM-aph (3)-IIa (aphA2)a-TEM | 3 | |||
2 | tetA-tetK-sul1-sul2-blaTEM-SHV | 6 | |||
3 | bla TEM | 1 | |||
4 | - | - | |||
5 | sul1-sul2 | 2 | |||
6 | tetA-tetK-sul2 | 3 | |||
7 | - | - | |||
8 | tetM-sul2 | 2 | |||
9 | sul2 | 1 | |||
10 | SHV | 1 | |||
11 | sul2-blaTEM | 2 | |||
12 | - | ||||
Fresh milk | |||||
1 | - | - | |||
2 | - | - | |||
3 | tetD | 1 | |||
4 | sul2 | 1 | |||
5 | tetK-tetG-sul1 | 3 | |||
6 | tetK | 1 | |||
7 | tetA-blaZ | 2 | |||
Raw milk | |||||
1 | - | - | |||
2 | sul1-sul2 | 2 | |||
Genotypic resistance patterns of L. monocytogenes isolates | |||||
S/N | Genotypic resistance patterns | No of resistance genes | Cheese | Fresh milk | Raw milk |
1 | tetD | 1 | 1 | ||
2 | tetK | 1 | 1 | ||
3 | sul1 | 1 | |||
4 | sul2 | 1 | 1 | 1 | |
5 | SHV | 1 | 1 | ||
6 | bla TEM | 1 | 1 | ||
7 | sul1-sul2 | 2 | 1 | 1 | |
8 | tetA-blaZ | 2 | 1 | ||
9 | tetA-strA | 2 | |||
10 | tetA-sul1 | 2 | |||
11 | tetM-sul2 | 2 | 1 | ||
12 | sul2-blaTEM | 2 | 1 | ||
13 | blaTEM-SHV | 2 | |||
14 | blaTEM-TEM | 2 | |||
15 | tetK-tetG-sul1 | 3 | 1 | ||
16 | tetA-tetK-sul2 | 3 | 1 | ||
17 | tetA-tetK-sul1-sul2-blaTEM-SHV | 6 | 1 | ||
18 | blaTEM-aph (3)-IIa (aphA2)a-TEM | 3 | 1 |