2. Medium risk area: within 14 days, newly confirmed cases were found in COVID-19, and the cumulative confirmed cases in COVID-19 were less than 50; * * * More than 50 cases were diagnosed, and no clustering epidemic occurred within 14 days.
3. Low-risk areas: COVID-19 cases have not been diagnosed, or COVID-19 cases have not been newly diagnosed for 14 days.
Legal basis: Article 53 of the Constitution of People's Republic of China (PRC). People's Republic of China (PRC) citizens must abide by the Constitution and laws, keep state secrets, cherish public property, observe labor discipline, observe public order and respect social morality.