Table 1.
Results of bacteriological examination of tissue and cloacal swab samples (frequency of challenge strain 'positive' samples per animal and challenge strain ‘positive’ cloacal swabs per day post-challenge).
| Group | N | Min. | Max. | Median | 95 % CI* | Mean | SD | P** | |
|---|---|---|---|---|---|---|---|---|---|
| Tissue samples | |||||||||
| 1 (Vaccination) | 20 | 0 | 5 | 3 | 2.0 | 3.0 | 2.7 | 1.34 | 0.0240 |
| 2 (Control) | 20 | 1 | 5 | 4 | 3.0 | 4.0 | 3.6 | 1.23 | |
| Cloacal swab samples | |||||||||
| 1 (Vaccination) | 20 | 0 | 4 | 1 | 1.0 | 2.0 | 1.6 | 1.10 | <0.0001 |
| 2 (Control) | 20 | 1 | 5 | 3 | 3.0 | 4.0 | 3.2 | 1.20 | |
| Positive cloacal swab samples per group and day post-challenge | ||||||
|---|---|---|---|---|---|---|
| Group | 0 dpc | 3 dpc | 5 dpc | 7 dpc | 10 dpc | 14 dpc |
| 1 (Vaccination) | 0 | 16 | 8 | 4 | 2 | 1 |
| 2 (Control) | 0 | 18 | 18 | 16 | 7 | 4 |
*CI: confidence interval of the median.
**P: p-value, Wilcoxon Mann-Whitney test (level of significance p ≤ 0.05).