Table 1 Lethality of the fliY- mutant and the wild-type strain in infected guinea pigs.
Strain | Challenge dosage (×108 per animal) | Animal (n) | Dead/surviving (n/n) | Death rate (%) |
|---|---|---|---|---|
Wild-type Mutant | 6 | 10 | 10/0 | 100 |
| Â | 6 | 10 | 0/10 | 0 |
| Â | 12 | 10 | 0/10 | 0 |
| Â | 30 | 10 | 0/10 | 0 |
| Â | 60 | 10 | 6/4 | 60 |