Table 1.
Prevalence of PBV in LTS and Non-LTS flocks.
| Age | LTS (% positive) | Non-LTS (% positive) |
|---|---|---|
| 2 week | 15/20 (75) | 3/10 (30) |
| 3 week | 20/20 (100) | 5/10 (50) |
| 5 week | 2/20 (10) | 10/10 (100) |
| 8 week | 2/20 (10) | 5/10 (50) |
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