Figure 2.

Overview of the presence of antibodies against PRRSV (left) and antibodies against PCV2 (right) in a selection of sixty piglets, originating from either routinely PRRSV vaccinated seropositive sows (E+ piglets; n = 30) or routinely PRRSV vaccinated seronegative or slightly seropositive sows (E− piglets; n = 30). In each group, twenty-four piglets were included in the experimental trial, represented by green (E+ piglets) or red (E− piglets) dots. The cut-off value for seropositivity in each ELISA test is visualized by a dotted line. The mean S/p values ± standard error of the mean (SEM) are presented by error bars.