EBV is a human herpes virus. Children infected with herpes virus may initially experience high fever, sore throat, nausea and vomiting, and skin rash. 1. High fever: Herpes virus invades the human body and causes the cells to secrete special toxins and affects the temperature control center in the brain, resulting in a persistent fever. 2. Sore throat: Children infected with herpes virus will have a sore throat. This is mainly because the mucous membrane in the throat is affected by the virus. 3. Nausea and vomiting: The herpes virus may irritate the digestive system of children, causing nausea and vomiting, abdominal pain and other symptoms. 4. Rash: Rash caused by herpes virus infection is a relatively common disease, which is a symptom associated with the process of infection and may be closely related to allergic reactions. Herpes virus infection is acute, and children’s physical quality is poor, so the initial symptoms are more intense, it is recommended to consult a doctor as soon as possible, and follow the doctor’s instructions for targeted treatment.