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During the Winter Olympics
As the Beijing 2022 Winter Olympics are about to be held, epidemic prevention and control cannot be relaxed at all
.
In addition to the detection of people and objects, how to detect the new coronavirus in the environment inside and outside the Olympic venues?
"Compared with conventional methods such as throat swabs, it is very difficult to quickly detect the new coronavirus in the air.
The new coronavirus is
transmitted through aerosols in the air, and there has been no good method for aerosol collection
.
The content of the virus is much lower than that in the human body, and the new coronavirus is an RNA virus with poor stability.
In addition, the air is always flowing.
In order to solve the problem of aerosol detection, in accordance with the deployment of the Beijing Municipal Party Committee and the Municipal Government, with the strong support of the Beijing Municipal Science and Technology Commission and the Zhongguancun Administrative Committee, Liu Peng from the School of Medicine of Tsinghua University, Wang Jianbin from the School of Life Sciences, and Bai Jingwei from the School of Pharmacy have joined forces with Peking University to achieve prosperity and harmony.
Huang Yanyi, Ren Lili of the Institute of Pathogen Biology of the Chinese Academy of Medical Sciences, Changping Laboratory and other units have carried out emergency research in response to the new trends and challenges of the development of the new crown epidemic.
After 8 months of hard work, they have developed and completed the public space bioaerosol new crown Viral nucleic acid monitoring system
.
In the bioaerosol detection laboratory in Changping, Beijing, Li Bao, a master's student in the Department of Biomedical Engineering of Tsinghua University School of Medicine, is operating a virus nucleic acid detection instrument
.
I saw him take out 1 ml of the sample to be tested, put it into the detection chip, and then put the chip into the testing instrument
It is understood that Liu Peng and his team tested the aerosol nucleic acid detection system in Ditan Hospital in April 2021, carried out on-site collection of new coronavirus samples, and actually verified the system
.
At that time, the researchers collected nasopharyngeal swabs, saliva, exhaled gas and aerosol samples in the ward of the patients, and divided the samples into two, and performed aerosol testing and routine testing simultaneously
In order to further promote the application of this technology in the Beijing Winter Olympics, the Beijing Municipal Science and Technology Commission and the Zhongguancun Administrative Committee took the lead, together with Beijing Municipal Disease Control, Municipal Drug Administration, Market Supervision Administration, Municipal Metrology Institute and other units and experts from various fields Scholars have clarified the market access conditions of this technology and the safety issues in its use
.
From August to September 2021, the R&D team will complete the third-party testing and testing of two products, the bioaerosol sampler and the automated fully integrated high-sensitivity nucleic acid detection system (environmental samples), by the Beijing Institute of Metrology and Testing Sciences as instructed.
From October to December of the same year, with the support of the Changping Laboratory, the research team successively signed contracts with the Capital Gymnasium, the National Speed Skating Stadium, the Ice Cube, the Wukesong Ice Center, the National Stadium, the main media center, and the five Olympic venues.
The hotel conducts aerosol sampling and testing
.
A total of 348 specimens were collected and tested during the test competition, and the test success rate was 100%
According to reports, during the Winter Olympics, aerosol samples will be collected at various competition venues, and then transferred to the testing station for testing.
The results will be fed back to the epidemic prevention department within 4 hours to assist them in taking further actions based on the results.
measures
.
It is worth mentioning that, according to Liu Peng, this system does not "pick" virus strains, and even the newly mutated Omicron strain cannot escape its detection
"In the epidemic prevention and control measures, air environment detection is one of the important parts of the overall epidemic prevention system
.
Our technical application is equivalent to a part of the competition epidemic prevention system, which plays a supplementary and early warning role
