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Examination for PRRSV in liveborn piglets delivered by sows infected with PRRSV on day 90 of gestation
| Experimental group | Sow ID | Age of piglets |
|||
| At birtha | 2 weeksb | 4 weeksb | 6 weeksb | ||
| Infected | 97 | 9/9c | 8/8 | ||
| 208 | 14/14 | 13/14 | 7/14 | 0/6 | |
| Total | 23/23 | 21/22 | 7/14 | 0/6 | |
| Controls | 199 | 0/16 | 0/14 | 0/14 | 0/9 |
| 303 | 0/13 | 0/13 | 0/6 | ||
| Total | 0/29 | 0/27 | 0/20 | 0/9 | |
Precolostral samples.
Serum samples.
Number of positive piglets/number of piglets examined.
