What procedures do people who come back from other places need?

Legal analysis: 1. People entering Zhengzhou in low-risk areas: they need to show the green code of health code, and there is no need for isolation and nucleic acid detection. 2. People entering Zhengzhou from the middle and high-risk areas in China: it needs to be quarantined for 14 days (during which nucleic acid test is conducted twice and serum test is conducted 1 time). For those who arrive in Zhengzhou within 0/4 days before the horizontal modulation risk is medium and high, continue to implement the measures of "home medical observation until leaving the place/0/4 days after kloc, and carry out nucleic acid detection (serum antibody detection if necessary)".

Legal basis: People's Republic of China (PRC) Law on the Prevention and Control of Infectious Diseases.

Article 42 In the event of an outbreak or epidemic of infectious diseases, the local people's governments at or above the county level shall immediately organize forces to carry out prevention and control in accordance with the prevention and control plan and cut off the transmission route of infectious diseases. When necessary, the following emergency measures can be taken and announced after being approved by the people's government at the next higher level: (1) restricting or stopping performances in markets, theaters or other places where people gather; (2) suspension of work, business or classes; (three) closed or sealed public drinking water sources, food and related items contaminated by infectious disease pathogens; (4) controlling or culling wild animals, domestic animals and poultry infected with the epidemic; (five) closed places that may cause the spread of infectious diseases.

Article 45 In the event of an outbreak or epidemic of infectious diseases, the State Council has the right to urgently mobilize personnel or reserve materials and temporarily requisition houses, vehicles and related facilities and equipment throughout the country or across provinces, autonomous regions and municipalities directly under the Central Government.