Figure 2

Viremia and viral shedding in the animals of groups 4 and 5. Viral titers in the clinical samples, neutralizing antibody titers (NT) of the serum samples, and those standard deviation values are depicted by polygonal line graphs with dark colors (serum, red; whole blood, orange; oral swab, blue; nasal swab, green; rectal swab, purple; and NT, black). AUC of polygonal line graphs for viral titers are colored with the same light colors. The red line represents the detection limit of virus titration for each clinical sample. As two of three hybrids in group 4 died 19 and 17 dpi, respectively [18], the polygonal line graphs between 21 and 28 dpi are depicted using viral titers of the one remaining hybrid only.