People who come to cities in low-risk areas should report to the village after returning home and check the negative certificate of nucleic acid test within 7 days. There is no need for isolation, but it is recommended to stay at home as much as possible for 7- 14 days, do not gather, do not have dinner, and do personal protection.
Further reading
What are the characteristics of nucleic acid detection, antibody detection and antigen detection?
Nucleic acid detection: It has high requirements for laboratory environment, testers and instruments, high detection sensitivity and good specificity, and the results can be obtained in 2-3 hours.
Antibody detection: the operation is simple and convenient, and it is suitable for the detection of a large number of suspected cases and asymptomatic infected persons, and the results can be obtained within 15 minutes at the earliest.
Antigen detection: it has low requirements for laboratories, can be used for early screening and early diagnosis, and is suitable for large-scale screening in primary hospitals, and the results can be obtained within 15 minutes at the earliest.
At present, nucleic acid detection is widely used, and the sensitivity and specificity of antibody/antigen detection reagents are still limited. Nucleic acid/antibody/antigen detection has its own emphasis and cannot replace each other. The combined application of multiple detection methods can effectively shorten the detection window and improve the positive detection rate.