EBV infection without fever is considered to be recovering, if the fever is reduced by antipyretic drugs, the condition is not yet fully controlled. EBV infection may cause fever, hepatosplenomegaly, liver function abnormalities, etc. The fever caused by EBV is generally accompanied by the entire course of the disease, so the fever is not indicated that the disease is basically under control, and the disease is gradually recovering, and the subsequent damage to liver function, hepatosplenomegaly, etc. can be gradually recovered, and the disease can be cured after a few days in general. However, the use of antipyretics during the fever process can bring the body temperature down to normal within a certain period of time. Therefore, if the fever does not develop because of the effect of antipyretic drugs, it is not certain whether or not the one disease viral infection has recovered, and it is still necessary to continue to observe the treatment.