What does pev mean?

PEV generally refers to porcine encephalomyelitis virus. Porcine encephalomyelitis virus (PEV) is an enterovirus belonging to MicroRNA family. There are two subtypes, Czech Jie Shen virus and British Taifa virus. In addition to America and Asia, many countries in the world have found it. The main lesion is central nervous gray matter necrosis, and the mortality rate is 90 ~ 100%. Inactivated vaccine has certain effect, but it can't completely control the disease.