What do close connections and sub-close connections mean and what are the criteria for determining them?

In order to control the epidemic faster, people with confirmed cases are often traced to their origins, and close and sub-close contacts of confirmed cases are also quarantined and observed. So, what do close connections and sub-close connections mean? What are the criteria for judging these two types of people? Many people still have many questions about the epidemic. Close contacts and sub-close contacts are also the most common in epidemic reports from various places. Let’s take a look at the introduction.

What do close contacts and sub-close contacts mean?

“You can use A, B, C, and D as an analogy. If A is a confirmed case, B and A have lived together, Work, eating, etc. are close contacts. And C and B also have a similar relationship, that is, close contacts of close contacts, then C is a sub-close contact, but D has interacted with A and B. Those who have not had close contact. "In the circulation investigation, the secondary close contacts are mainly investigated for the close contacts, which is the first contact between the close contacts and the case or the asymptomatic infected person (2 days before the onset of illness) to the close contact. Before being quarantined and managed, those who had close contact with close contacts, such as living in the same place, working in the same closed environment, having dinner and entertainment, etc. but not taking effective protection, were included in the investigation as family members and colleagues who had frequent contact with close contacts. Focus on other people.

The above is an introduction to the meaning of close contact and sub-close contact. After reading this, everyone should have an understanding of these two situations. For more epidemic information, please pay attention to this site.