The lockdown can be lifted if these conditions are met. There are no new cases or asymptomatic infections in the area in the past 14 days. The last close contact in the area has been exposed for more than 14 days and the nucleic acid test is negative. Two days before the control was lifted, all personnel in the area completed a round of nucleic acid screening and all were negative.
From 2 days before the onset of the case or 2 days before the positive test of the asymptomatic infection to the isolation management, if it has a certain risk of transmission to people in the workplace, activity areas and other areas, and its close contacts, close contacts It is difficult to determine the close contact tracking of the epidemic, and the relevant areas are classified as control areas. The control area can be accurately divided into communities (natural village groups), buildings, units, etc., and "people are not allowed to leave the area and gatherings are strictly prohibited." Anyone found to have a positive nucleic acid test in the control area will be immediately transferred to a closed control area.