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Number of samples negative to Brucella spp. tested by microbiological isolation and PCR in different stages of the trial.
| Animals (n) | Stage of the Trial | Matrices | Samples (n) |
|---|---|---|---|
| 4 | Post vaccination (dead animals) | lymph nodes | 31 |
| spleen | 4 | ||
| udder | 3 | ||
| other organs | 14 | ||
| 29 | Calving | cotiledons | 28 |
| colostrum | 27 | ||
| vaginal swabs | 29 | ||
| 29 | Lactation | milk | 733 |
| vaginal swabs | 369 | ||
| 29 | End of trial (slaughtered animals) | lymph nodes | 92 |
| spleen | 22 | ||
| udder | 21 | ||
| other organs | 5 |
