2. Middle-high risk area: centralized isolation 14 days, and nucleic acid detection was carried out on 1 4, 7 and 14 days respectively.
3. There is an intersection with the activity track of the infected person: centralized isolation 14 days, and nucleic acid detection was carried out on 1 4 days, 4 days, 7 days and 14 days respectively.
4. Implement "7+7" (home isolation, home health monitoring) measures for those who come (return) to the counties (districts) where the medium and high-risk areas are located.
5. Personnel from other counties (districts) in the city where the middle and high risk areas are located will be monitored at home for 7 days, and the nucleic acid will be tested twice within 3 days. At the end of health monitoring, 1 nucleic acid will be tested.
6. Low-risk areas outside the province: with negative nucleic acid test certificate within 48 hours, at least 1 nucleic acid test shall be conducted upon arrival.