An octavalent vaccine provides pregnant gilts protection against a highly virulent porcine parvovirus strain

All pigs were artificially inseminated 4 weeks after the second vaccination. They were challenged during early gestation with PPV27a, a virulent cluster D strain, and euthanized to collect their offspring by hysterectomy around day 90 in pregnancy. Antibody responses against PPV in gilts were measured, and the presence of PPV in progeny was also determined.