Coding rules of "health code": 1, "code red". Diagnosed patients, suspected patients, asymptomatic infected persons and their close contacts; Persons living abroad in recent 14 days; Persons who need centralized isolation or home medical observation according to regulations; Other personnel who must be included in the management of red team.
2. "yellow code". People with fever symptoms; Persons who have lived in medium-risk and high-risk areas and need to receive nucleic acid testing in COVID-19 according to regulations; Other personnel who must be included in the "yellow code" management.
3. "green code". People outside of "red team" and "Code Yellow".