How is the scope of the investigation determined? Wu Fan: All are judged according to the trajectory of the epidemiological investigation

The Paper's reporter Li Jiawei

At 20:00 on January 13 (Thursday), Shanghai held a press conference on the prevention and control of the new crown pneumonia epidemic, inviting the relevant responsible persons of the Municipal Health Commission, the Civil Affairs Bureau, Jing'an District and relevant experts to introduce the situation.

A reporter asked, we are concerned that in the past few days, there are many places in the investigation and investigation, such as Jiuguang Department Store, Central No. 1 and residential commercial places, as well as schools, etc., why is the scope of investigation so wide?

Wu Fan, a member of the Shanghai Municipal Public Health Expert Group on Epidemic Prevention and Control and vice president of the Shanghai Medical College of Fudan University, said that all citizens are very concerned about this issue and would like to give you a little response here. Each time we investigate and cooperate, we are judged according to the trajectory of the epidemiological investigation, which is divided into three levels: close connection, close connection (sub-close connection), and risk groups involved in the periphery. The size of the investigation mainly depends on the work characteristics of the case itself, the social scope, as well as the size of the life circle and life trajectory, and the degree of social activity. Secondly, it is also related to megacities, megacities in the prevention and control of infectious diseases, there is one of the biggest characteristics, we usually call the fragility of the prevention and control of infectious diseases in megacities, that is, the population density is large, the mobility is particularly large, and the exchange of personnel is very frequent. Whether it is traveling, working, or in the usual scope of work, the exchange is very large.

The public does not need to be too entangled and nervous, and these ranges are all dotted. These dots exist for two reasons just mentioned. In fact, the degree of these places involved in the investigation process is also different, and everyone does not have to be nervous. When encountering such a situation, first, first, treat it with a normal mentality; second, closely cooperate with the work to be done in prevention and control; third, arrange your own itinerary, we will give you feedback on the results of the investigation at the first time, and take different follow-up control measures for different places.

Editor-in-Charge: Gao Wen

Proofreader: Ding Xiao