Table 5.
Distribution of antibiotic resistance genes in STEC serogroups isolated from fermented dairy products in Iran
| STEC serotypes |
Antibiotic resistance genes |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| aadA1 | tetA | tetB | dfrA1 | qnr | aac ( 3 )- IV | Sul1 | blaSHV | CITM | ereA | cat1 | cmlA | |
| O157 (13) |
4 |
9 |
11 |
1 |
1 |
5 |
2 |
6 |
6 |
4 |
3 |
3 |
| O145 (3) |
2 |
3 |
2 |
1 |
1 |
1 |
1 |
3 |
2 |
1 |
1 |
1 |
| O128 (4) |
1 |
4 |
4 |
- |
1 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
| O121 (2) |
- |
2 |
2 |
- |
- |
- |
1 |
2 |
- |
- |
1 |
1 |
| O113 (3) |
- |
2 |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| O111 (3) |
- |
1 |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| O103 (3) |
- |
1 |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| O91 (2) |
- |
1 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| O45 (2) |
- |
2 |
1 |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
| O26 (6) |
2 |
5 |
6 |
1 |
1 |
2 |
1 |
3 |
2 |
1 |
1 |
1 |
| Non detected (9) |
6 |
8 |
6 |
2 |
2 |
6 |
3 |
4 |
6 |
2 |
4 |
5 |
| Total (50) | 15 (30) | 38 (76) | 35 (70) | 5 (10) | 6 (12) | 16 (32) | 9 (18) | 19 (38) | 18 (36) | 9 (18) | 11 (22) | 12 (24) |