Implement "7-day centralized isolation +3-day home health monitoring" for close contacts and direct flights to Beijing;
7-day home isolation for close contacts;
Carry out "three days and two inspections", and do a good job of health monitoring for those who have contacted the epidemic spot and those who have lived in the county where the land border port is located within 7 days.
Requirements of nucleic acid detection and antigen detection during isolation of sub-close contacts
Close contacts: Nasopharyngeal swabs were collected for nucleic acid detection on days 1, 4 and 7 after home isolation, and antigen self-examination was carried out on days 2 and 5. All the close contacts in the first four days of the isolation medical observation period were negative, or the antigen test was positive, but the nucleic acid reexamination of nasopharyngeal swab was negative, and the isolation medical observation could be lifted on the seventh day; If close contacts have positive results in the first 4 days, they will be managed.