According to the relevant requirements of novel coronavirus Prevention and Control Plan (Ninth Edition) and Notice on Strictly Implementing the Nine Prohibitions in COVID-19 Epidemic Prevention and Control (No.253 [2122] of Joint Prevention and Control Mechanism), the relevant policies in our province are now adjusted as follows:

1. Control measures for various risk groups

(1) Entry personnel. The control measures were adjusted to 7 days of centralized isolation medical observation +3 days of home health monitoring. A nucleic acid test was carried out on the 1 th, 2 nd, 3 rd, 5 th and 7 th day of centralized isolation medical observation, and a nucleic acid test was carried out on the 3 rd day of home health monitoring.

(2) close contacts. The control measures were adjusted to 7 days of centralized isolation medical observation +3 days of home health monitoring. A nucleic acid test was carried out on the 1 th, 2 nd, 3 rd, 5 th and 7 th day of centralized isolation medical observation, and a nucleic acid test was carried out on the 3 rd day of home health monitoring. The period of isolation control shall be counted from the last exposure, and it shall be returned to the place of residence in a "point-to-point" closed loop after the centralized isolation is lifted.

(3) Close contacts of close contacts. The control measures were adjusted to 7-day home isolation medical observation, and the body temperature and symptoms were monitored every day, and nucleic acid detection was carried out on the 1 th, 4 th and 7 th days respectively. If the previous two nucleic acid tests of close contacts have positive results, the close contacts of close contacts (hereinafter referred to as close contacts) will be adjusted to close contacts and managed according to close contacts.

(4) persons exposed in epidemic-related places. Those who are exposed to crowded and closed places such as wedding (funeral) banquets, restaurants, supermarkets, shopping malls and farmers' markets with suspected cases, confirmed cases and asymptomatic infected persons, but do not meet the principle of close contact and close contact, the control measures are to carry out a nucleic acid test on the 1 th and 3 rd days after the judgment.

(5) people who have lived in high-risk areas for 7 days. The control measures were adjusted to 7 days of centralized isolation medical observation, and nucleic acid detection was carried out on the 1 th, 2 nd, 3 rd, 5 th and 7 th days respectively. The management period starts from leaving the risk area.

(6) Persons who have lived in a medium-risk area for 7 days. The control measures were adjusted to 7 days of home isolation medical observation, and nucleic acid detection was carried out on the 1 th, 4 th and 7 th days respectively. The management period starts from leaving the risk area.

(7) people who have lived in low-risk areas for 7 days. The control measures are adjusted to complete nucleic acid detection twice within 3 days and do a good job in health monitoring.

(8) employees in high-risk positions. Closed-loop management measures should be strictly implemented for those who need closed-loop management in high-risk positions such as cold storage at the first station, international flights and centralized isolation places, which are in direct contact with entry personnel, imported cold-chain goods and the environment. After leaving their jobs, the control measures should be adjusted to 7 days of centralized isolation medical observation, and nucleic acid testing should be carried out on the 1 th, 4 th and 7 th days respectively. When positive articles for nucleic acid detection are found in the circulation and sales of imported cold chain foods, the relevant articles are temporarily sealed and disinfected, and the work area is disinfected. The control measures for employees who come into contact with positive articles and the same batch of articles are two consecutive nucleic acid tests (sampling time is at least 24 hours apart), among which employees with high contact frequency take home health monitoring for 7 days, and carry out nucleic acid testing on the 1 th, 4 th and 7 th days respectively.

(9) Urban migrants at land border ports. People leaving the land border port city must hold a 48-hour negative nucleic acid test certificate. When a local epidemic occurs, people leaving the land border port city should not only hold a 48-hour negative nucleic acid test certificate, but also have relevant certificates issued by the community or unit. Other areas should check the relevant certificates for the urban influxes at land border ports.

(11) COVID-19 discharged (cabin) infected persons included in community management. The control measures were adjusted as follows: COVID-19 discharged infected persons and their residents were monitored at home for 7 days after discharge, and nucleic acid detection was carried out on the 3rd and 7th days respectively.

(11) asymptomatic infected persons. Centralized isolation medical observation was conducted in Fangcang Hospital (or designated hospital or sub-designated hospital) for 7 days. Nasopharyngeal swabs were collected on the 6th and 7th days for nucleic acid detection (the sampling time was at least 24 hours apart). For example, the Ct values of N gene and ORF gene were both ≥35 (the limit value of fluorescence quantitative PCR detection method was 41, the same below), or the detection was negative (the limit value of fluorescence quantitative PCR detection method was lower than 35, the same below). If the above conditions are not met, they will continue to be isolated in the shelter hospital until they meet the criteria for leaving the cabin. During the period of centralized isolation medical observation, the patient's condition should be monitored well, and after meeting the diagnostic criteria of confirmed cases, it should be corrected as confirmed cases in time. After the centralized isolation medical observation is released, home health monitoring should continue for 7 days.

ii. delineation and prevention of risk areas

the delineation standards and control measures of intact control areas, control areas and prevention areas are cancelled, and the delineation standards and control measures of high, medium and low risk areas are uniformly adjusted to:

(1) high risk areas. The areas where cases and asymptomatic infected people live, as well as workplaces and activities with frequent activities and high risk of epidemic spread, are designated as high-risk areas. In principle, residential communities (villages) are designated as units, and sealing and control measures such as "staying at home and providing on-site services" are adopted. The high-risk area was reduced to the medium-risk area for 7 consecutive days, and the medium-risk area was reduced to the low-risk area for 3 consecutive days.

(2) medium risk area. Areas such as workplaces and activities where cases and asymptomatic infected people stay and move for a certain period of time, which may have the risk of epidemic spread, are classified as medium-risk areas. The scope of risk areas is defined according to the results of flow investigation and judgment, and control measures such as "people don't leave the area, taking things at the wrong peak" are adopted, and no new infected people are reduced to low-risk areas for 7 consecutive days.

(3) low-risk areas. Other areas in the county (city, district) where the middle-high risk area is located are low-risk areas, and preventive measures such as "personal protection and avoiding aggregation" should be taken. People in low-risk areas should hold negative certificates of nucleic acid testing for 48 hours when leaving their cities.

after all the medium and high risk areas are removed, the whole county (city, district) will implement normalized prevention and control measures. After the outbreak of local epidemic, the high, medium and low risk areas shall be designated by the municipal epidemic prevention and control headquarters in accordance with the relevant provisions of the novel coronavirus Prevention and Control Plan (Ninth Edition), and experts shall be organized according to the spread risk of the epidemic, and the provincial epidemic prevention and control headquarters shall give professional guidance and support.

III. Nucleic acid detection

(1) Confirmed cases, asymptomatic infected persons, entry personnel, close contacts and close contacts

During hospitalization, isolated medical observation or health monitoring, the individual samples should be collected separately, and a single tube should be used for nucleic acid detection, and mixed sampling and mixed detection are not allowed. Medical and health institutions, third-party testing institutions, etc. shall feed back the laboratory test results within 12 hours.

(II) Personnel in key posts or places

People who are inspected every day: drivers, cleaners and maintenance personnel of cross-border vehicles, porters of imported goods at ports, front-line personnel of imported cold-chain food storage and processing enterprises, staff of centralized isolation places, staff of designated medical institutions, medical staff related to fever clinics in general medical institutions, and other front-line personnel who are in direct contact with entry personnel and goods, such as customs and immigration management departments.

check the crowd twice a week: express delivery, take-away, hotel services, decoration and loading and unloading services, port management service personnel, transportation services, shopping malls, supermarkets and agricultural (market) workers, etc., and the staff of general medical institutions except fever clinics. If there are 1 or more local positive infections in the jurisdiction, the frequency of nucleic acid detection should be appropriately increased according to the risk of epidemic spread and the local epidemic prevention and control requirements.

key places and institutions: schools, kindergartens, training institutions, service institutions in the field of old-age care and child welfare, psychiatric hospitals, supervision places, production workshops, construction sites and other key places. If there are 1 or more local positive infected people in the jurisdiction, they should organize to complete 1 times of nucleic acid detection in time, and then carry out nucleic acid detection according to the detection results and the risk of epidemic spread according to the sampling ratio of at least 21% per day or the local epidemic prevention and control requirements.

(3) In the middle and high-risk areas

, three consecutive tests were carried out in the first three days after the closure or control was implemented, two nucleic acid tests were completed on the 1 th and 3 rd days, and one antigen test was carried out on the second day. The frequency of subsequent tests can be determined according to the test results; Within 24 hours before the closure or control is lifted, a full-time nucleic acid test in the area should be completed. In high-risk areas, buildings and courtyards where positive infected people have been found can be tested for antigen first, and then for nucleic acid in an orderly manner after negative.

(4) Low-risk areas

According to the risk assessment results of epidemic spread and the management of risk personnel, scientifically determine the range and frequency of people in low-risk areas to carry out nucleic acid testing. When carrying out nucleic acid detection, sampling points will be set up nearby and will be activated after being evaluated by professionals.

(V) Regional nucleic acid detection strategy

1. After the outbreak in Shenyang and Dalian

, it was found that the transmission chain was unclear, there were many risk sites and risk personnel, and the risk personnel were highly mobile, and there was a risk of spread of the epidemic, all the people in the epidemic area were tested once a day. After three consecutive nucleic acid tests, all the people were tested again every three days, and there was no social aspect.

In other areas where infected people have frequent activities and stay for a long time, a certain area can be designated to carry out nucleic acid testing for all employees based on the flow survey. In principle, carry out a full-time nucleic acid test every day, and stop the full-time nucleic acid test if there is no social infection after three consecutive nucleic acid tests.

In case of widespread community transmission across regions, the command should be upgraded, and the provincial epidemic prevention and control headquarters will decide whether to carry out full-scale nucleic acid testing in the whole city.

2. After the epidemic in other cities

, it is judged through investigation that the transmission chain is unclear, there are many risk sites and risk personnel, and the risk personnel are highly mobile, and there is a risk of spread of the epidemic, all the people in the city where the epidemic is located will be tested once a day. After three consecutive nucleic acid tests without social infection, all the people will be tested again every three days, and all the people without social infection can be stopped.

in areas outside the city, based on the flow survey, a certain area is designated to carry out all-staff nucleic acid testing. In principle, carry out a full-time nucleic acid test every day, and stop the full-time nucleic acid test if there is no social infection after three consecutive nucleic acid tests.

3. In rural areas

After the outbreak, it is judged by flow investigation that the transmission chain is unclear, there are many risk sites and risk personnel, and the risk personnel are highly mobile. When there is a risk of spread of the epidemic, the natural villages involved in the epidemic, the township government and the county where the epidemic is located, all the nucleic acids will be tested once a day. After three consecutive nucleic acid tests, all the nucleic acids will be tested once every three days, and all the nucleic acids will be stopped if there are no social infected people.

when the epidemic spread to several towns and villages, we should expand the scope to carry out all-staff nucleic acid testing based on the flow investigation and judgment. In principle, carry out a full-time nucleic acid test every day, and stop the full-time nucleic acid test if there is no social infection after three consecutive nucleic acid tests.

(VI) Normalized nucleic acid detection

All cities should make overall planning, rationally arrange nucleic acid sampling points in the main urban area of the city and key parts such as public transportation stations, densely populated residential areas, enterprise gathering areas, schools, supermarkets, and places with large population flow in rural areas, and adopt the combination of "fixed sampling points+convenient sampling points+mobile sampling points" to build a city walk 15. According to the actual situation, each city will determine the frequency of nucleic acid testing for all employees after the judgment.

IV. Prevention and control of key places, key institutions and key populations

(1) Key places

Places with dense people and closed space, which are prone to cluster epidemics, such as stations, ports, airports, docks, public transport vehicles (cars, trains, planes and subways), logistics parks and nucleic acid detection points. Farmers' (bazaars) markets, hotels, shopping malls and supermarkets, fitness and entertainment places, hairdressing and bathing places, theaters, sports venues, libraries, museums, art galleries, chess and cards rooms, closed cruise ships, script killing, moon center, commodity exhibition and after-sales service places, conference centers, religious activities places, etc. should implement the main responsibility of the places.

during the prevention and control of normalized epidemic situation, it is necessary to register the health status of the staff, and check the temperature and health code of the staff and customers who enter the place. Only those with normal temperature and health code can enter. Staff wear medical surgical masks, N95/KN95 particulate protective masks or above, and disposable gloves during the whole work. Passengers or customers wear disposable medical masks, medical surgical masks or above. For the target population over 18 years old who meet the vaccination conditions in Covid-19, 1 doses of hypohomologous booster immunization or sequential booster immunization were carried out.

after the local epidemic, strictly monitor the health of permanent staff and temporary employees, and implement the system of "daily report" and "zero report". If there are suspicious symptoms, you must seek medical advice in time, and you are not allowed to go to work with illness. Strictly control the number of people entering the place, and the density of people can be controlled according to the standard of 51% of normal passenger flow. In the office, the staff should be arranged to sit in separate positions, and measures such as home office and decentralized office should be taken if conditions permit. Strictly check the temperature, health code and nucleic acid test results of the staff and customers who enter the place, and only those who are not abnormal can enter.

(II) Key institutions

Institutions that maintain the normal operation of society or are prone to cluster epidemics, including party and government organs, enterprises and institutions, medical institutions, service institutions in the field of child welfare, nursing homes, nursing homes, supervision places, institutions of higher learning, primary and secondary schools, child care institutions, training institutions, labor-intensive enterprises and construction sites, etc., should strictly implement the main responsibilities of the units.

during the prevention and control of the normalized epidemic situation, the health of the staff should be monitored every day, and a health account should be established. If there are symptoms such as fever, dry cough, fatigue, sore throat, etc., they should seek medical attention in time. Check the temperature of the staff at the entrance of the unit, check the temperature of the visitors, check the health code and register, and only those who are normal can enter. The staff shall wear medical surgical masks, N95/KN95 particulate protective masks or above, and disposable gloves in combination with the nature of their jobs and risk levels. For the target population over 18 years old who meet the vaccination conditions in Covid-19, 1 doses of hypohomologous booster immunization or sequential booster immunization were carried out.

after the local epidemic, strictly monitor the health of permanent staff and temporary employees, and implement the system of "daily report" and "zero report". If there are suspicious symptoms, you must seek medical advice in time, and you are not allowed to take up your post with illness. Strictly check the body temperature, health code and nucleic acid test results of the staff who enter the institution, and only those who have no abnormalities can enter. Medical institutions should strengthen the management of fever clinics, strictly pre-check and triage, control the number of patients through appointments, and implement closed management in inpatient areas. Nursing homes, nursing homes, service agencies and supervision places in the field of child welfare should implement measures such as closed management and video visits, and do not hold gathering activities. Colleges and universities should adopt closed management, strengthen the examination and approval management of all kinds of gathering activities, refrain from organizing large-scale gathering activities unless necessary, restrict meals in class, strengthen the ventilation of classrooms and dormitories, and reasonably set up express delivery points. Primary and secondary schools and child care institutions can stop offline teaching. Party and government organs, enterprises and institutions should take measures such as commuting at wrong time, flexible working system or home office, and not providing meals in class.

(3) key groups

staff in key places and institutions, people with high risk of infection or low resistance, including medical personnel, and the frontline of immigration, customs and market supervision systems.