Liu Can Diao sends text messages?

Yes, if you go to a high-risk area recently, the traffic control will send you a text message asking you to be isolated.

Extended data:

Epidemiological investigation refers to the investigation and study conducted by epidemiological methods. It is mainly used to study the distribution and determinants of diseases, health and health events. Through these studies, reasonable preventive health care measures and health service measures are put forward, and the effects of these measures and measures are evaluated.

The purpose of flow tune is to understand the activities, people and events of key people in a period of time. For the health status of patients or close contacts, we should know their contacts, contacts, activities and medical conditions. To find clues about the source and route of infection and clarify the chain of transmission, so as to provide basis for determining close contacts, taking isolation measures and delineating disinfection scope. Therefore, immigration is also to protect others from infection and control the spread of diseases.