TABLE 3.
Infectivity rates and median no. of CFU per gram of kidney from animals with positive kidney cultures
| Strain | Phenotype | Infectivity ratea | Median no. of CFU/g of kidney |
|---|---|---|---|
| CFT073 | TonB+ | 7/9 | 5.2 × 103 |
| CFT073-TB | TonB− | 2/10 | 0b |
| CFT073-TB(pYUK1) | TonB+ | 7/8 | 1.3 × 104 |
Number of animals with positive kidney cultures/number of animals inoculated.
P = 0.01 in comparison with CFT073 and CFT073-TB(pYUK1), as determined by the Mann-Whitney test.