1, the contact with close contacts belongs to sub-close contacts, and the health code of sub-close contacts will also change color, but whether it becomes yellow code or red code depends on the situation. If it is a close contact, it belongs to a close contact. At this time, the health code becomes red team, because the principles for judging red team are people with positive nucleic acid test, confirmed cases, asymptomatic infected people, suspected cases, close contacts, close contacts, and people who lived in high-risk areas in China in the past 14 days.
2. People who have had contact with close contacts belong to sub-close contacts, and the health code of sub-close contacts will also turn into red code, because the possible situations in which the health code turns into red code are: people with positive nucleic acid test, confirmed cases, asymptomatic infected people, suspected cases, close contacts, close contacts of close contacts, people who have lived in high-risk areas in China in the past 14 days, etc. Other high-risk personnel who need emergency tracking and isolation management during the emergency treatment of epidemic situation.