Table 3. Numbers of persistently infected (PI) cattle to identify and remove from infected herds in the regional survey.
| Factor detected | No. of positive farms | No. of farms with PI cattle | No. of PI cattle |
||
|---|---|---|---|---|---|
| Total | Cows | Calves | |||
| Viral RNA | 3 | 3 | 4 | 3 | 1 |
| Antibody | 10 | 1 | 3 | 0 | 3 |
| Total | 13 | 4 | 7 | 3 | 4 |
RNA=ribonucleic acid.