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Tianjin, January 20 (Xinhua) -- Nucleic acid sampling is in full swing, and testing experiments are speeding up... In the face of the menacing Aomi Kerong, some key areas of Tianjin have carried out several rounds of nucleic acid screening.
Where does the "big sieve" come from? Behind the rapidly updated nucleic acid test report, there is such a group of "behind-the-scenes heroes" who test samples 24 hours a day.
In the early morning of January 8, after Tianjin Jinnan Hospital reported that two personnel had a positive nucleic acid test for the new crown virus, the Tianjin Jinnan District Center for Disease Control and Prevention responded quickly and immediately carried out relevant disposal work. After receiving the notice, 16 inspectors immediately arrived at the post to review and confirm the positive samples of the initial screening.
Inspectors from the Tianjin Jinnan District Center for Disease Control and Prevention are conducting inspection work. (Photo taken on January 14, courtesy of the interviewee)
Soon, batches of samples were sent to the laboratory one after another - for ten days, 16 "warriors" in the microbiological laboratory department and several experts from the Chinese Center for Disease Control and Prevention and the Tianjin Municipal Center for Disease Control and Prevention work "worked in two shifts" for 24 hours, always sticking to the front line of inspection and testing.
From getting the sample to getting the result, the process of testing is delicate and complex, and a set of experiments often takes seven or eight hours.
"Our work is like 'looking for pathogens with a magnifying glass', the laboratory is the position of the 'epidemic', and the experimental equipment is our 'weapon'." Liu Jianling, director of the Microbiological Laboratory Department of the Tianjin Jinnan District Center for Disease Control and Prevention, said, "After the sample is sent, we must first concuse the oral epithelial cells on the throat swab into the preservation solution, extract the nucleic acid and amplify it by the thermal cycler, analyze the amplification curve and review and confirm it before we can get the results." ”
Liu Jianling said that the time for inspectors to test a single sample is generally about two hours, but if the number of samples increases significantly, while ensuring the accuracy of the experiment, it is also necessary to spend a lot of time checking the sample information and avoiding the results being "Zhang Guan Li Dai", and the experimental time will also increase.
The speed of Omicron's spread has accelerated significantly, and the "warriors" who test the positions must race against the virus every second. However, dozens of batches of samples are continuously sent every day, and the surge in sample size has become a problem for inspectors.
Optimize the inspection process, test samples in batches, redeploy the division of labor... In order to improve work efficiency, the team members brainstormed and figured out a number of methods. "We tested more than 30,000 samples throughout last year, and in the ten days from the 8th to the 17th, we have tested more than 20,000 samples." Liu Jianling said.
Due to the strict requirements of laboratory prevention and control and the prohibition of casual entry and exit, after the start of the experiment, the inspectors often have to eat or drink, and work continuously for several hours in the suffocating protective clothing. "Missing meals and breaks is a common occurrence, and people sometimes sleep for two or three hours during shift changes." Liu Jianling said.
Detection should be fast, accurate, and more secure. As one of the "vanguards" of the inspection and testing institutions in Tianjin, the Tianjin Jinnan District Center for Disease Control and Prevention undertakes the review of positive samples of the "big sieve" and the sample inspection of the isolated personnel at the isolation point and the high-risk population in the sealing area, which is only "one step away" from the invisible virus.
"While doing a good job in inspection, we also pay great attention to self-protection, environmental disinfection and biosecurity, eliminate personnel infection, and strictly prevent experimental pollution and external environmental pollution." Liu Jianling said, "The results are faster, the patient can be treated as soon as possible, the source of infection can be controlled as soon as possible, and the transmission route can be blocked as soon as possible." ”
Some are old party members who rush to the front line with illness, and some are young mothers with parents and "two children" at the bottom... In the face of the huge pressure of "day and night", the inspectors have built a strong and reliable epidemic prevention front.
Inspectors of the Tianjin Jinnan District Center for Disease Control and Prevention took a group photo in the center. (Photo taken on January 14, courtesy of the interviewee)
"In all aspects of flow tuning, sampling, transfer, and killing, inspection and testing is the last step, playing an important role in 'hammering the tone'." The slightest mistake will affect the direction of the entire epidemiological investigation and the accuracy of control, and there is absolutely no room for sloppiness. Liu Jianling said, "At the moment of the epidemic, we will definitely do our best to ensure everyone's life safety and social stability." ”
It was late at night, and the lights were still bright in the laboratory.