Low-risk areas need to provide 48 negative reports of small nucleic acids. Health code, green code and travel code, temperature measurement goes hand in hand.
The report should be provided within 12 hours in the middle risk area, with yellow health code, community health management 14 days and corresponding nucleic acid detection frequency.
High-risk areas need to provide reports within 12 hours, with red team's health code, centralized isolation within 14 days, and corresponding nucleic acid detection frequency.