Additional file 1 of A single recall vaccination lapse in sows triggers PRRSV resurgence and boosts viral genetic diversity

Additional file 1. Pseudorabies-antibody levels of three-week-old piglets as determined by ELISA (S/P ratios). Distribution of S/P ratios for the offspring of the fourteen sows present in batches 1 and 3. Each triangle represents an individual. S/P ratios ≥ 0.4 are considered positive. ns = non-significant.