Is it necessary to isolate a person who has been in contact with a person who has been in contact with a person who has been in contact with a person who has been in close contact with a person?

The close contact of the close contact referred to as the second close contact, this kind of crowd refers to the close contact with the close contact with the *** with the living life, the same confined environment, work, meals and entertainment, and other close contact but did not take effective protection of the people. Among them, family members and coworkers who have frequent contact with close contacts are the key population.

According to the relevant provisions, the second close contact first implemented 7 days of centralized isolation for medical observation, if the first 7 days of the new coronavirus nucleic acid test results are negative, and its contact with the close contacts of the new coronavirus nucleic acid test is also negative, then lifted centralized isolation for medical observation. If the first two nucleic acid tests of close contacts have positive results, their close contacts of close contacts in accordance with the management of close contacts.

Close contacts:

Suspected cases and confirmed cases 4 days before the emergence of symptoms, or asymptomatic infected person specimens 4 days before the sampling, and its close contact but did not take effective protection, epidemiological investigation professionals based on the results of epidemiological investigations, combined with the relevant departments to provide information on the big data, will be judged as a close contact.

For example, in the same room *** with family members living, in the office, workshop, team, elevator, cafeteria, classroom and so on with a scene of all the people in close contact, in a closed environment *** meal, *** with entertainment and provide catering and recreational services to the staff and so on. In this regard, CDC experts cited examples, such as high-speed rail the entire carriage, the front and rear of the airplane three rows of passengers, all belong to this category.

According to the relevant provisions of the new coronavirus pneumonia prevention and control program (eighth edition), close contacts are placed under intensive medical observation in isolation for 14 days, during which a nucleic acid test is carried out on the first, fourth, seventh and fourteenth days, respectively, and a daily health monitoring is carried out for seven days after the isolation is lifted, and a nucleic acid test is carried out on the second and seventh days, respectively.

Daily health monitoring must reduce mobility during the period, go out and do a good job of personal protection, do not participate in meetings, exhibitions, tours, dinners and other gatherings of activities, in principle, in the end of the daily health monitoring does not leave the county (city, district).