1. Sampling time: Monday to Friday: 14:00- 18:00 Saturday: 7: 30-11:00: 03-16: 30.
Two. Sampling location There are 79 fixed nucleic acid detection sampling points in various towns and streets of Yanji City (see annex for details).
Third, the sampling population:
1. Key population: expressway bayonet and service area staff, express delivery, take-away, bus drivers, taxi drivers, service industry employees, sanitation workers and other key service industry staff, and carry out 1 nucleic acid testing every two days.
2. Residents: At least 1 person in each household completes the nucleic acid test every week. The public can choose the nearest fixed sampling point for nucleic acid detection according to their needs.