2. Key control area: The specific area is shown in the following figure. All companies entering and leaving the key control area were isolated until the company's entry and exit reached 14 days, including 4 nucleic acid tests.
3. Key areas of concern (except key control areas): The specific areas are as follows. In key areas of concern, it is required to provide negative reports of nucleic acid detection within 48 hours. If there is no report, nucleic acid testing is needed at the first time.
Legal basis: The Notice on Strengthening the Prevention and Control Measures of Epidemic Situation at Current Social Level requires expanding the scope of nucleic acid detection. From other provinces and cities outside Liaoning province, it is necessary to provide negative proof of nucleic acid test within 48 hours. If they can't provide it, they should conduct 1 nucleic acid test within 24 hours after arrival and provide it to communities, units and hotels for inspection. Medical institutions have opened a green channel for nucleic acid detection. Before the nucleic acid test results come out, rest at the station, don't go in and out of public places, and don't take public transportation. It is suggested that the above-mentioned personnel conduct another 1 nucleic acid test within 1 week after their arrival.