Legal analysis: At present, the epidemic situation in China does not need to be isolated from low-risk areas to low-risk areas. Generally, just show the green code.

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

Article 13 People's governments at all levels organize mass health activities, carry out health education on the prevention of infectious diseases, advocate a civilized and healthy lifestyle, improve the public's awareness and ability to cope with infectious diseases, strengthen environmental sanitation construction, and eliminate the harm of rodents, mosquitoes, flies and other vectors.

the administrative departments of agriculture, water conservancy and forestry of the people's governments at all levels are responsible for guiding and organizing the elimination of rodent and schistosomiasis hazards in farmland, lakes, rivers, pastures and forest areas, as well as the hazards of other animals and vectors that spread infectious diseases.

the administrative departments of railways, transportation and civil aviation are responsible for organizing the elimination of rodents, mosquitoes, flies and other vectors in vehicles and related places.

Article 3 When disease prevention and control institutions, medical institutions, blood collection and supply institutions and their personnel performing their duties discover the epidemic situation of infectious diseases as stipulated in this Law or other outbreaks, epidemics and sudden infectious diseases with unknown causes, they shall follow the principle of territorial management of epidemic situation reporting and report according to the contents, procedures, methods and time limits as stipulated by the State Council or the health administrative department of the State Council.

when military medical institutions provide medical services to the public and discover the epidemic situation of infectious diseases specified in the preceding paragraph, they shall report it according to the regulations of the health administrative department of the State Council.

Article 39 When a medical institution discovers a Class A infectious disease, it shall take the following measures in time:

(1) Patients and pathogen carriers shall be treated in isolation, and the isolation period shall be determined according to the results of medical examination;

(2) For suspected patients, they should be treated separately in designated places before diagnosis;

(3) Carry out medical observation and take other necessary preventive measures at designated places for patients, pathogen carriers and close contacts of suspected patients in medical institutions.

if a person refuses isolation treatment or leaves isolation treatment before the expiration of the isolation period, the public security organ may assist the medical institution to take compulsory isolation treatment measures.

when medical institutions find patients with class b or class c infectious diseases, they should take necessary treatment and transmission control measures according to their illness.

medical institutions must disinfect and dispose of the places, articles and medical wastes contaminated by infectious disease pathogens in their own units in accordance with the provisions of laws and regulations.