Today (August 25), Shanghai held a press conference on the prevention and control of the new crown pneumonia epidemic, a reporter asked a question, saw the investigation notice mentioned the close connection, the close connection and related screening personnel, how did the disease control department delineate and judge? Can you elaborate?
Wu Fan, a member of the municipal public health expert group for epidemic prevention and control and vice president of Shanghai Medical College of Fudan University, said that with the progress of the epidemic, everyone has become more and more professional and understands this situation very well. In general, after the outbreak of the epidemic, the CDC will start the circulation at the first time, as long as the hospital reports an abnormality, we will immediately start the circulation work. This is immediately immediate, without any delay. Our work rhythm is measured in hours, not in days, and will immediately combine the big data information provided by relevant departments to trace the source and the close connection as quickly as possible. The importance of this work I can use in one word is "one hundred thousand urgent". The faster the speed of the touch, the sooner the person is determined, the first time to fix the person, even if you are negative, we can slowly touch, slowly detect, the first time to fix the person do not move again, can minimize his influence and involvement in the scope, so the speed is very important.
In the process of mapping, there are some principles, according to the relevant provisions of the state and the city. For the determination of close contact, the national norms require that those who have a common living with the case, work in the same closed environment, eat together and entertain, and have not taken effective protection are judged to be close contact. Either there is contact or close contact, medical staff contact every day is not close contact, because there is effective protection, if there is no effective protection and close contact can be judged as close contact. For those who have close contact with close contacts and have not taken effective protection, they are judged to be close contacts. This is the general principle.
Of course, there are many scenes in life, and the specific situation is also very different, so I will give you two examples. Generally we take a plane, everyone is more worried, the plane can not move when sitting on it, what if there is a confirmed case? In general, all passengers on the aircraft who are seated in the same row and three rows in front of and behind the confirmed case seat, as well as flight attendants who provide cabin service in the above-mentioned areas, act as close contacts.
The situation of the train is different, the train is relative to a car can move freely. The train is a carriage with a confirmed case, and the entire carriage is judged as a close connection. There are also some long-distance buses that are sealed air-conditioned vehicles, and if there is a confirmed case on these fully sealed air-conditioned vehicles, the entire car is judged as a close connection. Of course, there are many more in this scene life, dinner, friends, shopping, different situations are based on the specific conditions of the scene, the way of personnel contact, whether to take the protective situation to judge.
The close connection and the close connection I just mentioned, once these two types of people are defined, they must implement 14 days of isolation observation and corresponding stages of nucleic acid testing. There is a confirmed case diagnosed by investigation, the original close connection has been upgraded, it has become a close connection, and then need to do the close connection, the close connection has become a close connection, and then to check the close connection he is involved in, a round of outward, the scope should be expanded a little, this is what the disease control department will do if it finds a confirmed case under normal circumstances.
Among them, we also found that not only the close connection and the close connection of you manage, but also manage a lot of high-risk groups. Generally speaking, after the disease control department finds a confirmed case, it will go to the scene of the place where the confirmed case has visited to do investigation and circulation, and these confirmed cases and close contacts involve relevant places such as work and residence, after these investigations, we will determine a larger range, a circle of people, we call these people high-risk groups. According to the relevant regulations of the state, it is not enough to close the close connection, but it is not excluded that because he has been exposed or stayed in these environments, we call these people high-risk groups, and we are currently screening these groups, testing them and implementing relevant health management measures.
We around 1 confirmed case, the first control circle is close contact, the second control circle is the close connection, the third control circle is all involved in the place and can not be judged as the close connection of the high-risk group, after the three circles are defined, people to implement control, the place to carry out comprehensive disinfection, we even if there is a close connection in the back like today to become a confirmed case, do not worry, because his close connection of the close connection is already in our control, this firewall is a three-layer firewall, We have built it in the first time, we must understand, do not worry about the subsequent occurrence of confirmed cases in close contact. We say in a word, he is in a closed circle that is still controlled on the chain of communication, and if he can't run out of this circle, we don't worry.
The provisions of the state are good, the city's relevant close connection judgment and close connection judgment rules are a guide and principle, the people of the disease control department should be based on different places, the way of personnel contact, and finally the specific situation of the specific analysis, the level of risk, and finally determine whether this person is a close connection or a close connection, to be honest, this is really a technical work, not a random judgment. Shanghai can persist to this day, scientific precision, what does our precision mean? We are not unlimited expansion, our precision refers to more than one do not, less one can not, to do this requires us to have a very professional, very dedicated high-quality personnel of the disease control department, to ensure the implementation and implementation of this precision.
Through the first time of discovery, the first time of the flow, the first time of detection and screening, the first time of control, we are racing against the virus, the risk of virus spread to the minimum, to the greatest extent to ensure the normal operation and safety of the city, but also please understand and support the disease control department, if it involves yourself, I hope that everyone more understanding and support, active cooperation, can help the disease control personnel to complete the prevention and control of the new crown virus pneumonia, but also to block the further spread of the epidemic at the first time.
Author: Li Chenyan
Editor: Chu Shuting
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