Figure 3

HEV serology results on individual sera samples from HEV/PRRSV co-infected animals and contact pigs. Optical density (450 nm) values of ELISA test HEV 0.4v per animal at different days post infection. For each group, inoculated animals are indicated in black (n = 3), contact pigs in light grey (n = 3) and negative control in dark grey (n = 2). The cut off value is indicated by a dashed grey line.