There is no basis for the claim that people who do not have a fever for a long time are prone to serious illness.
Fever is a pathological state, long-term non-fever suggests that the body is relatively healthy during this period of time; there is no correlation between non-fever and disease; fever is the only thing that needs to be alerted to the occurrence of disease.
Fever is a pathological state produced after the body is stimulated by viruses, bacteria, tumor secretion and other heat-causing sources. Fever is helpful for the recovery of infectious diseases and can improve the ability of white blood cells to kill bacteria, but prolonged high fever may cause damage to the body. Prolonged absence of fever suggests that the body’s defense function is good and relatively healthy during this period of time.
At present, there is no documented relationship between prolonged absence of fever and disease, but prolonged fever suggests that pathological changes such as tuberculosis and other infectious diseases, tumors, autoimmune diseases such as systemic lupus erythematosus, etc., may have occurred, and requires a high degree of attention, and it is recommended to go to the hospital in time to consult a doctor when fever occurs.