TABLE 4.
Virulence for rainbow trout and mice of several A. hydrophila AH-3 (serogroup O34)
| Strain (main characteristic) | LD50a for:
|
|
|---|---|---|
| Rainbow trout | Mice | |
| AH-3 (wild type) | 105.3 | 107.4 |
| AH-405 (AH-3 rifampin-resistant mutant) | 105.4 | 107.6 |
| AH-2767 (gne insertion mutant from AH-405) | 107.2 | 108.6 |
| AH-2767(pACYC-GNE) (gne mutant complemented with the single gne gene) | 105.6 | 107.7 |
| AH-2767(pACYC184) (gne mutant with plasmid vector alone) | 107.3 | 109.0 |
a
The values are the averages of three independent experiments, and the maximum deviation was always <100.3.