2. For those who have lived in the county (street or town of municipality directly under the Central Government) where the high-risk area is located within 7 days, the whole chain closed-loop management measures of "landing nucleic acid+point-to-point transport+accurate coding+isolation control" will be strictly implemented, and the "7+7+5" control measures will be implemented, that is, red team will be assigned to conduct centralized isolation medical observation at No.65438 for 7 days respectively. When the isolation period expires and the results of nucleic acid test are all negative, it will be changed to green code, and family health monitoring will be continued for 7 days, and 10 and 14 days respectively. At the same time, the investigation time is backdated for 7 days from the date of local risk level modulation.
3. For those who have reported cases within 7 days but haven't adjusted their risk levels, they should take nucleic acid detection samples at the first landing point, and then put them into community management after point-to-point transport, assign yellow codes, and carry out health monitoring at home (health clinic) for 7 days, and carry out 1 nucleic acid detection on 1, 3 and 7 days respectively. At the same time, the investigation time was backdated for 7 days from the date of local case report.