Table 2 Serological results vaccinated vs. non-vaccinated (Flock B and E). Comparison of cELISA positive (above cutoff) vaccinated and naturally exposed sheep with frequency, respective proportion (%), median titers and titer range.
Flock (n) | Parameter | Spring 2005 | Autumn 2005 | Spring 2006 | Autum 2006 |
|---|---|---|---|---|---|
B1 | No. positive | 6 | 3 | 2 | 2 |
14 sheep | Prop. Pos. (%) | 43 | 22 | 14 | 43 |
| Â | Median titer | 62.9 | 61.3 | 58.7 | 64.5 |
|  | Titer range | 61.3 – 64.2 | 55.1 – 66.3 | 56.4 – 61.0 | 55.3 – 77.5 |
B2 | No. positive | 2 | 1 | 0 | 2 |
12 sheep | Prop. Pos. (%) | 17 | 8 | 0 | 17 |
| Â | Median titer | 71.1 | 68.1 | - | 62.2 |
|  | Titer range | 69.4 – 72.8 | - | - | 55.9 – 68.5 |
E1 | No. positive | 1 | 0 | 0 | 1 |
13 sheep | Prop. Pos. (%) | 8 | 0 | 0 | 8 |
| Â | Median titer | 61.4 | - | - | 73.2 |
| Â | Titer range | - | - | - | - |
E2 | No. positive | 25 | 24 | 19 | 23 |
50 sheep | Prop. Pos. (%) | 50 | 48 | 38 | 46 |
| Â | Median titer | 76.3 | 81.2 | 80.4 | 82.2 |
|  | Titer range | 57.4 – 94.7 | 56.5 – 96.3 | 55.2 – 97.6 | 56.0 – 98.7 |