TABLE 3.
Correlation of plasmid profiles and tetracycline (Tet) resistance determinants among 216 OTC-resistant and 97 OTC-sensitive Aeromonas isolates and the association of tetracycline resistance determinants with self-transferable plasmids, as established in filter mating assays with E. coli recipients
| Characterization of sample | No. of isolates that
are
|
||||
|---|---|---|---|---|---|
| OTC resistant
|
Sensitive | ||||
| TetA | TetD | TetE | NCb | ||
| Plasmid profile Aa | 13 | 2 | 5 | 20 | 10 |
| Plasmid profiles B, C, and D | 1 | 3 | 18 | 68 | 29 |
| No plasmids | 5 | 1 | 16 | 64 | 58 |
| Total | 19 | 6 | 39 | 152 | 97 |
| Donor | 13 | 2 | 5 | 20 | |
| Transconjugant | 11 | 1 | 0 | 5 | |
a
Profile A, one or several large plasmids (>30 kb); and profiles B, C, and D, small to medium-sized plasmids (2.3 to 25 kb).
b
NC, resistance determinant, not classified.