Table 6 Prevalence of nasal discharge of virus-positive and -negative animals
Week 1 | Week 3 | Week 5 | Total | |
|---|---|---|---|---|
Herd 1 | ||||
Virus positive | 23% (3/13) | 30.1% (4/13) | 0% (0/3) | 36.8% (7/19) |
Virus negative | 12.5% (8/64) | 47.3% (26/55) | 50.8% (30/59) | 35.9% (64/178) |
P-value | 0.58 | 0.43 | 0.26 | 0.861 |
Herd 2 | ||||
Virus positive | 100% (6/6) | 70% (7/10) | 83.3% (10/12) | 82.1% (23/28) |
Virus negative | 44% (26/59) | 32.7% (17/52) | 34% (16/47) | 37.3% (59/158) |
P-value | 0.03 | 0.062 | 0.006 | < 0.0001 |
Herd 3 | ||||
Virus positive | 77.8% (21/27) | 91.3% (21/23) | 78.6% (22/28) | 82% (64/78) |
Virus negative | 62.7% (32/51) | 81.8% (45/55) | 86% (43/50) | 76.9% (120/156) |
P-value | 0.26 | 0.47 | 0.6 | 0.46 |