TABLE 4.
Prevalence of tet genes among Aeromonas isolates
| Sample type or species | No. of isolates | % (no.) of isolates with tetracycline gene(s) |
||
|---|---|---|---|---|
| tetA | tetEa | tetA and tetE | ||
| River | 35 | 11.4 (4) | 91.4 (32) | 5.7 (2) |
| Postchlorinated | 24 | 25.0 (6) | 83.3 (20) | 8.3 (2) |
| A. caviae | 1 | 0 (0) | 100 (1) | 0 (0) |
| A. media | 1 | 0 (0) | 100 (1) | 0 (0) |
| A. hydrophila | 8 | 12.5 (1) | 87.5 (7) | 0 (0) |
| A. veronii group | 25 | 24 (6) | 76 (19) | 8.0 (2) |
| Total | 59 | 16.9 (10) | 88.1 (52) | 6.8 (4) |
a
Statistical analysis comparing prevalence of tetE to that of tetA indicated significant differences (P < 0.005).