Second, those who have lived in the middle-risk area for 7 days were observed at home for 7 days, and their nucleic acids were detected at 1, 4 and 7 days respectively. The management period will start from leaving the risk area.
Three, for people who have lived in low-risk areas for 7 days, complete two nucleic acid tests within 3 days, and do a good job in health monitoring.