RPL9 and infection: It is an acute, highly contagious, and highly fatal disease characterized by sudden death, vascular damage and subsequent internal bleeding, lymphoid organ lesions, mucosal damage to the digestive tract, severe diarrhea, and parenchymal organ degeneration [3] The UL6 gene has the conserved region of the α-herpetic virus UL6 homologous gene, which provides the basis for the establishment of molecular biological diagnostic methods suitable for recessive infection DEV [4].