Table 1.
Calf mortality, reactor animals, incidence rates (IR%) and efficacy of vaccine (EV%) in BCG-vaccinated and control animals per dairy herd.
| Herd ID | Vaccination Status | N° Dead Calves (%) * | N° Positives/Total (% Positives) | IR% | EV% | ||
|---|---|---|---|---|---|---|---|
| 6 M | 12 M | 18 M | |||||
| H1 | BCG | 11 (6.5) | 10/159 (6.3) | 6/147 (4.1) | 7/120 (5.8) | 0.9 | 42.2 |
| Control | 14 (8.8) | 14/146 (9.6) | 9/128 (7.0) | 11/97 (11.3) | 1.5 | ||
| H2 | BCG | 15 (9.7) | 11/140 (7.9) | 16/126 (12.7) | 28/96 (29.2) | 2.7 | 24.5 |
| Control | 15 (10.3) | 15/130 (11.5) | 19/115 (16.5) | 30/81 (37) | 3.6 | ||
| H3 | BCG | 10 (11.2) | 35/79 (44.3) | 15/41 (36.6) | 8/21 (38.1) | 8.6 | 8.5 |
| Control | 11 (12.6) | 38/76 (50) | 13/35 (37.1) | 5/16 (31.3) | 9.4 | ||
| H4 | BCG | 15 (28.3) | 9/38 (23.7) | 3/22 (13.6) | 5/16 (31.3) | 4.1 | 7.8 |
| Control | 15 (33.3) | 10/30 (33.3) | 4/19 (21.1) | 0/10 (0) | 4.5 | ||
| H5 | BCG | 0 (0) | 2/34 (5.9) | 6/32 (18.8) | 2/20 (10) | 2.1 | 25.9 |
| Control | 2 (8) | 5/23 (21.7) | 2/18 (11.1) | 1/11 (9.1) | 2.8 | ||
| H6 | BCG | 14 (33.3) | 2/28 (7.1) | 1/24 (4.2) | 1/20 (5) | 1.0 | 17.1 |
| Control | 10 (30.3) | 0/23 (0) | 2/21 (9.5) | 2/16 (12.5) | 1.2 | ||
| H7 | BCG | 9 (28.1) | 2/23 (8.7) | 1/15 (6.7) | 1/6 (16.7) | 1.6 | 0 |
| Control | 6 (31.6) | 2/13 (15.4) | 0/7 (0) | 0/2 (0) | 1.6 | ||
* Dead animals between vaccination and 6 months post-vaccination time points.