Table 1.
Results of efficacy testing of vaccine batches in accordance with the EP Monograph on C. perfringens vaccines
| Batch number | Efficacy in IU β‐anti‐toxin ml−1 rabbit serum | |
| Mean value | Confidence interval | |
| 50 05 92 | 17.14 | 13.87–24.95 |
| 51 04 93 | 45.17 | 41.65–53.59 |
| 52 06 93 | 98.23 | 85.84–128.87 |