Medium-high risk area: "14+7" health management, 14 day centralized isolation observation +7 days home health observation, during centralized isolation observation, nucleic acid detection was carried out on 1 3, 7 and 14 days, and during home health observation, nucleic acid detection was carried out on the 2nd and 7th days respectively.
Other personnel in the counties (cities, districts) where the epidemic situation is high-risk in China: "3+ 1 1" health management measures (except "14+7" health management measures), 3-day home health observation+1 1 day regular health monitoring.