What do you mean by a second-level secret contact?

The second-level confidential personnel are the second-level confidential personnel. You can use a, b, c and d for analogy. If A is a confirmed case, B and A live, work and eat together and are close contacts. C and B have a similar relationship, that is, close contact, and then C is the second close contact. D has crossed with A and B, but it has never been in close contact.

People who have had close contact with close contacts, such as living together, working in the same closed environment, having dinner, having fun, etc., but have not taken effective protection, come into contact with asymptomatic infected people for the first time from two days before the onset of the case or two days before specimen sampling.

Objects related to sub-secret personnel

1, close contact

This kind of people started two days before the symptoms of suspected cases and confirmed cases appeared, or two days before the samples of asymptomatic infected people were collected, and they had close contact with them but did not take effective protection.

2. General contact person

Such people have had contact with suspected cases, confirmed cases and asymptomatic infected people on the same means of transportation, such as flying, trains and ships, living, studying, working and treating together, but they do not meet the principle of judging close contacts.