1. For people who have lived in high-risk areas for 7 days, centralized isolation medical observation was taken for 7 days, and nucleic acid (oropharynx) was detected on 1, 2, 3, 5 and 7 days respectively.
2. For those who have lived in the middle-risk area for 7 days, they were observed in isolation at home for 7 days, and the 1, 4, and 7-day medical observers were tested for nucleic acid (oropharynx). Those who do not have the conditions for home isolation medical observation shall adopt centralized isolation medical observation, and the management period shall start from leaving the risk area.
3. For those who have lived in low-risk areas for 7 days, they should complete two nucleic acid tests within 3 days and do a good job in health monitoring.