Table 3.
Information on the AI station and herds containing BHV-1 antibody-positive animals
| Herd (station) | Type of production | Apprx nr animals | Nr seropos. animals | Year herd detected | Epidemiol. connection to | Type of contact | Cause of detection |
| A | AI station | 30 | 10 | 1970 | abroad | import1 | Clinical suspicion |
| B | Dairy and beef | 450 | 79 | 1990 | A | s2 | Clinical suspicion |
| C | Dairy | 25 | 1 | 1991 | B | p, a3 | Contact herd of B |
| D | Dairy | 50 | 6 | 1990 | E | a4 | BTM antibody pos. |
| E | Beef, calf rearing | 55 | 2 | 1991 | A, D | s | Contact herd of D |
| F | Dairy | 15 | 2 | 1990 | A | s | BTM antibody pos. |
1: see text for details
2: possibly contaminated semen
3: same cattle tender working both in B and C; animal
4: animal