What do you mean by sub-secret connection?

Sub-close contact refers to close contact.

The first contact between close contacts and cases or asymptomatic infected persons (from 2 days before the onset of cases or 2 days before the sampling of asymptomatic infected persons to the time before the isolation management, the first contact between close contacts and cases or asymptomatic infected persons) to the time before the close contacts are isolated and managed.

People who have close contact with close contacts, such as living together, working in the same closed environment, eating and entertaining, have not taken effective protection, among which family members and colleagues who have frequent contact with close contacts are the key points.

The significance of close contact:

People who have close contact with suspected cases and confirmed cases but have not taken effective protection since 2 days before symptoms appear, or 2 days before sampling asymptomatic infected people.

According to the epidemiological investigation results and big data information provided by relevant departments, epidemiological investigation professionals determine close contacts according to the following principles:

(1) Family members living in the same room.

(two) the direct caregivers or providers of medical care services.

(three) medical personnel who carry out medical activities that may produce aerosols in the same space.

(four) in the office, workshop, team, elevator, canteen, classroom and other places with close contact with staff.

(five) people who eat together, entertain together and provide catering and entertainment services in a closed environment.

(6) Visiting medical personnel, family members or other close contacts.

(7) People who take the same vehicle and have close contact (within the range of 1 meter), including caregivers and nursing staff on the vehicle and their companions (family, colleagues, friends, etc.). ).

(8) Persons exposed to the environment and articles contaminated by cases or asymptomatic infected persons.

(nine) other personnel who meet the criteria for judging close contacts by the on-site investigators.