Table 2.
Serological results from animals in herds with outbreak of respiratory disease
| Herd size | Herd no. | Mean age of sampled animals | BRSV infection No. pos/sampled | BPIV3 infection No. pos/sampled | BCoV infection No. pos/sampled | Serological detection |
|---|---|---|---|---|---|---|
| 13 |
20 |
3.9 yrs |
5/5 |
0/5 |
0/5 |
BRSV |
| 20 |
1 |
2.3 yrs |
1/2 |
0/2 |
0/2 |
BRSV |
| 24 |
21 |
3.5 yrs |
3/3 |
0/3 |
0/3 |
BRSV |
| 27 |
16 |
3.0 mo |
4/5 |
0/5 |
0/5 |
BRSV |
| 51 |
6 |
2.2 mo |
1/5 |
0/5 |
0/5 |
BRSV |
| 55 |
4 |
1.2 yrs |
7/7 |
0/7 |
0/7 |
BRSV |
| 71 |
7 |
1.2 yrs |
6/7 |
0/7 |
0/7 |
BRSV |
| 74 |
3 |
1.7 mo |
0/4 |
0/4 |
4/4 |
BCoV |
| 83 |
11 |
7.3 mo |
3/5 |
0/5 |
0/5 |
BRSV |
| 95 |
14 |
3.8 mo |
1/3 |
0/3 |
0/3 |
BRSV |
| 136 |
13 |
4.8 mo |
3/3 |
0/3 |
1/3 |
BRSV/BCoV |
| 171 |
8 |
10.5 mo |
6/6 |
0/6 |
0/6 |
BRSV |
| 193 |
18 |
7.1 mo |
4/5 |
4/5 |
2/5 |
BRSV/BPIV3/BCoV |
| 210 |
10 |
5.5 mo |
5/5 |
0/5 |
0/5 |
BRSV |
| 210 |
15 |
3.7 mo |
5/5 |
0/5 |
1/5 |
BRSV/BCoV |
| 220 |
19 |
2.7 mo |
0/5 |
0/5 |
1/5 |
BCoV |
| 250 |
12 |
5.7 mo |
0/3 |
2/3 |
0/3 |
BPIV3 |
| 256 |
5 |
1.4 mo |
0/5 |
0/5 |
0/5 |
- |
| 265 |
17 |
4.7 mo |
5/6 |
2/6 |
5/6 |
BRSV/BPIV3/BCoV |
| 300 |
9 |
1.6 yrs |
5/5 |
3/5 |
1/5 |
BRSV/BPIV3/BCoV |
| Total | 64/94 | 11/94 | 15/94 |
The herds are listed according to size, i. e. the number of animals in the herds at first sampling. The ratio of animals with acute antibody response against BRSV, BPIV3 and/or BCoV out of investigated animals is shown.
The results are based on detection of antibodies in paired serum samples. Animals were defined as positive for infection if they seroconverted or if the antibody titre increased ≥ 70%. The mean age is at first sampling.