How long do close contacts in Anqing need to be isolated?

Centralized isolation of close contacts 14 days +3 times of nucleic acid detection; Sub-close contacts were isolated for 14 days and nucleic acid was detected twice; Centralized isolation 14 days +2 nucleic acid tests were carried out for people from high-risk areas; Conduct 14-day home isolation +2 nucleic acid tests for people coming to Iraq in the middle-risk area; Centralized isolation at the place of entry 14 days+centralized isolation at the place of residence for 7 days+home isolation at the place of residence for 7 days+three times of nucleic acid detection at the place of residence shall be implemented for returned overseas personnel.