Figure 1

Viremia and viral shedding in the inoculated and contact animals of groups 1–3. Viral titers in each clinical sample are depicted by polygonal line graphs with dark colors (serum, red; whole blood, orange; oral swab, blue; nasal swab, green; and rectal swab, purple). AUC of polygonal line graphs are colored with the same light colors. The red line represents the detection limit of virus titration for each clinical sample. Pigs in group 3 were euthanized at 5 dpi because they were moribund [17].