The dispatch doctor of the Dispatching Command Center of the Beijing Emergency Center often receives calls claiming that "the patient feels aches all over his body and shivers". "Did the patient have a fever?" The dispatch doctor often asked like this. "He feels very cold. Is that fever?" There was always a hint of surprise in the caller's voice.

Exactly, the beginning of the change in the body temperature regulation center is the reduction of heat dissipation and the increase of heat generation on the body surface. Before a fever, the patient will feel cold due to reduced heat dissipation on the body surface. At this time, it is recommended to drink more water and perform physical cooling. When the body temperature is too high, it is necessary to follow the doctor's advice to take antipyretic drugs.

At the alternation period of summer and autumn, due to the large temperature difference in the morning and evening, untimely adding clothes or improper diet, children and the elderly with weaker immune system will catch colds and fevers. It is recommended to keep warm in the morning and night. It is best to add a blanket or thin quilt at night. It is necessary to pay more attention to the diet, ensuring adequate water and eating fruits and foods that are beneficial for the lungs. During the epidemic, people working in a relatively closed environment should also pay attention to ventilation, wash hands frequently, and take personal protective measures.