Be alert to the clustered epidemic of nucleic acid testing sites!
Samples were taken at the same site before the diagnosis of multiple cases
In the recent local epidemic, Nanjing, Yangzhou, Zhangjiajie, Yantai, Zhengzhou and other places have carried out multiple rounds of large-scale nucleic acid testing.
The risk of a cluster of detection points has caused concern.
At present, the clustered epidemic situation at the nucleic acid testing site in Lianhe Village, Wantou Town, Yangzhou has caused at least 25 infections, of which 3 people are staff at the testing site.
In Nanjing’s previously announced trajectory of confirmed cases, there were residents who had close conversations with confirmed cases while queuing for nucleic acid testing.
In addition, the 5 newly confirmed cases in Zhangjiajie City on August 8 were all subjected to nucleic acid sampling at the centralized sampling point on the evening of August 5.
On February 5, 2021, the State Council's Joint Prevention and Control Mechanism Comprehensive Group issued the "Notice on Further Improving New Coronavirus Nucleic Acid Testing Services", clearly requesting to strengthen the safety management of sampling and testing, and to guide the masses to wear masks correctly and keep them above 1 meter Space, pay attention to cough etiquette, leave the scene as soon as possible after sampling, to minimize the risk of cross-infection.
Nucleic acid test site of Zhuji Workers' Cultural Palace, Shifeng District, Zhuzhou City, Hunan Province.
The picture comes from the WeChat public account of "Shifeng Publishing"
Detection point clustered epidemic emerges
According to previous reports by The Paper (www.thepaper.cn), as of 24:00 on August 7, 25 people had been infected with COVID-19 after having been to the nucleic acid test site in Lianhe Village, Wantou Town, Yangzhou on July 29. Among them, 3 were the test sites. The staff, 22 were residents who participated in the sampling, and they all contacted Wang Qiang, a staff member of the Financial Settlement Center of Wantou Town, the confirmed case.
On August 8th, the Yangzhou Municipal Commission for Discipline Inspection and Supervision issued the “Notice on Accountability for Typical Issues of Formalism and Bureaucracy in Epidemic Prevention and Control”. The notification showed that the nucleic acid testing sites in Lianhe Village, Wantou Town, Guangling District were not set up properly and organized on-site. The chaos caused many people who were in close contact with Wang Qiang at the test site to be infected, causing adverse social effects.
Wang Qiang has been investigated and suspended for serious violations of the law.
In addition, the confirmed case No. 197 announced in Nanjing had been in close contact with the confirmed case while queuing for nucleic acid testing.
Case 197 is a 2-year-old boy.
On July 21, he and his family lined up for a nucleic acid test at Lukou Sunny Plaza. During this period, the family had close conversations with neighbors (contact with confirmed cases).
On the evening of July 23, he accompanied his family and talked with another neighbor in the backyard at home (contact with confirmed cases).
On July 31, the boy was transferred to the Nanjing Public Health Center due to a positive nucleic acid test and was diagnosed as a confirmed case that day.
According to the WeChat public account "Zhangjiajie in the palm of your hand", from 0-24 o'clock on August 8, 10 newly diagnosed cases of local new coronary pneumonia in Zhangjiajie City, Hunan Province, 5 of which were residents of Qianshe Community, Yanghuping Street, Yongding District. Nucleic acid sampling was carried out at the centralized sampling point on the evening of August 5. No one went out the day before the sampling, and the diagnosis was confirmed 3 days after the sampling.
One of the confirmed cases developed symptoms of worsening fever two days after sampling. The ambulance took him from the isolation hotel to the new district (Shadi) of the Municipal People's Hospital for diagnosis and treatment.
When all employees are tested: more than 3 rounds in multiple locations
Nucleic acid testing is an important method for the prevention and control of new coronavirus infections.
On February 7, 2021, the Comprehensive Group of the Joint Prevention and Control Mechanism of the State Council issued the "Guidelines for the Implementation of New Coronavirus Nucleic Acid Testing Organizations for All Staff" (hereinafter referred to as the "Guidelines"), requiring cities with a population of less than 5 million to complete the inspection within 2 days. Nucleic acid screening and testing tasks for employees, if necessary, can be ensured through overall planning within the province (autonomous region, municipality).
Cities with a population of more than 5 million should complete the task of nucleic acid screening and testing for all staff within 3-5 days, and can apply for national support when necessary.
The guidelines require that the first round of testing can all use 10 mixed 1 testing techniques to screen out infected persons as quickly as possible.
Subsequent full-staff nucleic acid testing and screening can be carried out in accordance with the plan of single-collection testing for key populations and high-risk areas, and mixed-collection testing for low- and medium-risk areas.
Mixed mining detection can adopt 10 mixed 1 or 5 mixed 1 mixed mining detection technology.
According to the comprehensive research and judgment of the screening results, the screening and testing rounds are determined. If necessary, multiple rounds of screening and testing can be adopted for local areas and key populations.
Public information shows that a number of epidemic-related cities in my country are currently undergoing multiple rounds of large-scale nucleic acid testing.
Yangzhou, where the epidemic situation is tight, has entered the fifth round of nucleic acid testing.
According to the "Yangzhou Release" WeChat official account, at 6:30 am on August 9th, Yangzhou City has launched the fifth round of large-scale nucleic acid testing in the main urban area.
As of 24:00 on August 8, the fourth round of large-scale nucleic acid testing in the main urban area of Yangzhou has been basically completed.
On August 8th, Nanjing, which was the first "zero addition", ushered in the sixth round of nucleic acid testing.
At present, Nanjing City has carried out five rounds of nucleic acid testing. The first three rounds are full-staff nucleic acid testing, and the fourth and fifth rounds are nucleic acid testing in some areas.
From August 8th to 9th, 21 streets (towns) in Nanjing carried out the sixth round of nucleic acid testing.
According to the "Nanjing Release" WeChat official account, the expert group comprehensively analyzed the time and space distribution of positive cases, traceability intergenerational relationship, activity trajectory area and other epidemiology based on the previous five rounds of test results and the traceability of each positive case. Situation, the area of the sixth round of nucleic acid testing was determined.
On August 5, Zhangjiajie began the fourth round of full-scale nucleic acid testing for all employees. The first three rounds of nucleic acid testing totaled 1,212,274 people.
At 16:00 on August 8, Wulingyuan District, Zhangjiajie launched the fifth round of full-area nucleic acid testing. This time there are 56 sites for nucleic acid testing. In strict accordance with the principles of fragmentation, point-by-point, and time-by-time, residents are organized to conduct nucleic acid testing. sampling.
Nucleic acid sampling safety regulations: keep 1 meter line
On August 7, the Zhangjiajie City New Coronavirus Pneumonia Epidemic Prevention and Control Work Headquarters issued the "Zhangjiajie City New Coronavirus Pneumonia Epidemic Prevention and Control Technical Specifications", which clearly stipulates the "Staffing and Protection Standards for Temporary Sampling Sites for Nucleic Acid Testing of All Staff" , Each sampling station is equipped with a disinfectant, disinfect the hands of the sampling personnel, the sampling tables and chairs and the sampling environment at any time, and hand over with the sample transfer personnel; the sampling and disinfection personnel wear protective clothing, hats, latex gloves, and face screens. N95 medical protective mask.
In fact, as early as the beginning of this year, the State Council's Joint Prevention and Control Mechanism Comprehensive Group had issued relevant notices.
On February 5, the State Council’s Joint Prevention and Control Mechanism Comprehensive Group issued the “Notice on Further Improving the Nucleic Acid Testing Services for the Novel Coronavirus” (hereinafter referred to as the “Notice”), requiring the strengthening of safety management of sampling and testing, and instructing the masses to wear masks correctly and maintain At a distance of more than 1 meter, pay attention to cough etiquette and leave the scene as soon as possible after sampling to minimize the risk of cross-infection.
The notice also requires nucleic acid testing agencies to implement scheduled sampling, interval sampling time, strengthen ventilation and environmental cleaning and disinfection measures; medical personnel engaged in sampling should take personal protection and implement hand hygiene in accordance with standards and regulations.
In addition, the "Guidelines for the Implementation of New Coronavirus Nucleic Acid Testing Organizations for All Staff" also put forward requirements for the "work preparation" of relevant departments: all localities should use public security household registration and census data as the basis, and use information technology to pre-register to find out the jurisdiction. Population size and distribution, accurately grasp the situation of special populations, testing agency capabilities, nucleic acid testing material reserves, regional sampling and testing teams, sample transport personnel, and vehicle requirements, etc., establish work accounts, and formulate clear timetables and roadmaps. According to the amount of nucleic acid testing tasks, compared with the existing reserves, timely check for omissions and fill vacancies to ensure that nucleic acid testing for all employees can be carried out in time in the event of a sudden epidemic.
The guidelines also require that the sampling point should be an independent space, with ventilation conditions, internally divided into corresponding clean and contaminated areas, and equipped with hand hygiene facilities or devices; the sampling point should be set up with clear guidelines and signs, and the sampling process and precautions should be clarified; set up An independent waiting area ensures one-way flow of personnel.
Flow chart of on-site sampling for large-scale population nucleic acid testing in Nan'an, Fujian.
The picture comes from the WeChat public account of "Fengzhou Town People's Government, Nan'an City" "Prosperous State".
At present, including Nanjing and Yangzhou, many large-scale nucleic acid tests have partially adopted mixed inspections (including 1:5 mixed inspections and 1:10 mixed inspections) to improve detection efficiency.
On August 17, 2020, the Medical Treatment Team of the Joint Prevention and Control Mechanism of the State Council issued the "Technical Specifications for 10-in-1 Mixed Collection and Detection of New Coronavirus Nucleic Acids."
The specification puts forward requirements for "collection locations": select an open and well-ventilated site as a centralized collection site for large-scale crowd screening; according to the original site conditions, it is divided into waiting areas, collection areas, buffer zones and temporary isolation areas, effectively decentralized The density of people to be inspected; among them, the waiting area should be set up with pedestrian passages, and at the same time, a meter line should be set up to ensure the protection and safety of waiting personnel.
Recently, disease control departments in many places have issued nucleic acid detection and protection reminders.
"Henan Disease Control" WeChat public account issued a document on August 1 stating that in order to avoid cross-infection, nucleic acid testing can be carried out in an orderly manner on a community basis, divided into communities, divided buildings, and divided time periods to prevent crowds in a short period of time. A large number of gatherings; in addition, detection instructions can be issued through micro-neighborhoods, cell broadcasts, etc. to remind personal protection.
"Jiangsu Disease Control" WeChat public account issued a document on July 29 that in order to avoid cross-infection during nucleic acid testing, you must keep a safe distance when you arrive at the sampling point and wear a mask throughout the process. Do not talk with people. Use tissues or hands when you cough. Cover your elbows to avoid the risk of droplet transmission, and conduct sampling in an orderly manner with the guidance of the on-site staff; in addition, it is best to prepare a mask, or you can carry disposable disinfectant or alcohol with you, and you can give it to your hands in time after sampling disinfect.
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