Figure 4

ZJ-SW19 pathogenicity in vivo. A Viral titers in organs in the group of 10^6.0 EID₅₀ identified using the TCID₅₀ assay. B Daily weight loss and survival rate in six mice in each experimental group infected with 50 µL of viruses at 10^5.0 or 10^6.0 EID₅₀ over 14 dpi.