EBV, the herpes virus, can be asymptomatic or clinically severe after infection. Most EBV infections have no clinically significant symptoms, and some EBV infections show mild symptoms similar to the flu and fever, such as fever and sore throat, and most people heal on their own after 3-5 days. In some people, EBV infection is associated with an increase in mononuclear cells, fever, sore throat, and enlarged lymph nodes, liver, and spleen. In some people, EBV infection is followed by a more severe form of hemophilia, which is characterized by trance, fever, liver and spleen necrosis, and a very poor healing process. Therefore, for EBV infection, the progression of the disease needs to be judged relative to the treatment plan.