Figure 4. S. suis spread within a simulated hypothetical stable compartment under different weaning scenarios.

Course of percentage of S. suis positive pigs over time after relocation of pigs at weaning for two simulated situations based on a hypothetical conventional pig farm setting. In scenario A, 10 litters of 10 pigs each were introduced in a stable compartment and kept spatially separated. In scenario B, 10 litters were mixed to form two groups of 50 pigs. In both scenarios it was assumed that that at relocation one of the 100 pigs was infected with S. suis and that direct contact between pigs in different pens was impossible. Per scenario 10.000 iterations were performed. The solid lines represent the median values, and the dashed lines the 2.5^th and 97.5^th percentiles of these simulations. The black lines represent scenario A, and the grey lines scenario B.