1. During the period when novel coronavirus antigen or Nucleic acid test is positive.
2. During the period of fever, sore throat, cough, runny nose, muscle ache, fatigue and other suspected symptoms of novel coronavirus infection.
3. When Disease cluster occurs in the community and school where people live, work or study.
4. When seeking medical treatment, accompanying, accompanying, or visiting medical institutions.
5. When outsiders enter places where vulnerable populations are concentrated, such as elderly care institutions and social welfare institutions.
During the working period of medical, catering, cleaning, security and other public service personnel in key institutions such as elderly care institutions, social welfare institutions, daycare institutions, schools, and off campus training institutions.