How many days do students need to be isolated in Jinan before they can have direct contact?

Eight days. According to the epidemic information in Jinan, it is known that students who have positive contact in Jinan need to be isolated for 8 days. For close contacts, the management measures of "7-day centralized isolation +3-day home health monitoring" will be adjusted to "5-day centralized isolation +3-day home isolation", during which code management will be implemented and they are not allowed to go out. On 1, 2, 3 and 5 days, medical observation was concentrated and 1 nucleic acid was detected respectively. On 1 and 3 days, medical observation was isolated at home and 1 nucleic acid was detected respectively.