Shenzhen cancelled the bayonet nucleic acid detection. According to the relevant information, as of February 11, 2122, all checkpoints no longer require the time and place code for nucleic acid detection. When 11 mixed 1 nucleic acid test is positive, 11 people will be quarantined at home for 5 days, and the home quarantine personnel will go to the hospital for testing themselves if the monitoring is abnormal. When there is a positive person, the building where he is located is isolated at home, and there is no requirement for other buildings.