These pathways are mainly involved in immunity (T cell receptor/IL-17/Th17 cell differentiation signalling pathway), inflammation (TNF/toll-like receptor (TLR) signalling pathway), signal transduction (MAPK signalling pathway, etc.), cell apoptosis (apoptosis signalling pathway), and other pathways involved in influenza A, B, and C viral hepatitis. The gene discussed is TNF; the disease is animal viral hepatitis.