The recent epidemic prevention and control situation is severe and complicated. As more people make nucleic acids, the question comes. Why do we have to do it even if there are no infected people here? With so many people working together, how can I protect myself? The answer is here!
We have no infected people here, so why do we also do nucleic acid test for ?
nucleic acid test for new coronavirus in the population is of great significance to early diagnosis and treatment, epidemic prevention and control, and resumption of work and production. Nucleic acid testing in , close contacts with , and the public, will help detect infected people early, especially those who have been infected with the virus but have not yet shown symptoms, so as to take early isolation and treatment measures, which can not only avoid infecting others but also reduce the risk of developing severe diseases.
nucleic acid sampling tube, why separate single tube and mixed tube?
Single tube means a sampling tube is a sampling tube that only contains one person's samples, and a mixing tube means a sample of multiple people is placed in a sampling tube for testing. There are 5-mix 1, 10-mix 1 and 20-mix 1 sampling tubes. Single tubes should be used at isolation points and key groups. In order to improve detection efficiency, during large-scale nucleic acid testing, a 10-mix or 20-mix sampling tube is generally used.
Why do some places often need to do many rounds of nucleic acid screening?
nucleic acid detection is a "progressive" detection. Through real-time fluorescent polymerase chain reaction, a specific nucleic acid sequence in the viral genome is detected, thereby determining whether the person being tested is infected with the virus at this moment. In other words, nucleic acid testing can only detect whether you are healthy when sampling. Whether the
Omickron strain can be detected may be related to the disease development stage, sampling and vaccination. If the virus concentration in the body is not sufficient during nucleic acid testing and is lower than the lower limit of the detection, false negatives may occur; a small number of infected people may have interstitial detoxification. If the collection is not in the detoxification period, false negatives may also occur; if the sampling is not standardized and the virus cannot be collected, then missed testing may also occur; after a period of vaccination, even if the virus is infected, the antibodies produced by the human body will neutralize and remove the virus, resulting in a significant reduction in the detection rate of the virus. If the test is performed during the inhibition period, the viral load is low, which may also lead to inability to detect it.
Therefore, when an epidemic occurs in a place, in order to detect pathogens more accurately, detect infected people as soon as possible, and cut off the virus transmission chain, multiple rounds of testing should be carried out in a timely manner. Moreover, judging from the implementation of nucleic acid testing for all employees in many cities in China, timely and quickly adopting multiple rounds of nucleic acid testing for all employees is not only effective, but also very necessary for epidemic prevention and control work.
Based on the above reasons, multiple rounds of nucleic acid testing are needed for key areas and key personnel in order to quickly and accurately detect potential infected people, so as to take targeted control measures in a timely manner to block the spread of the epidemic and control the spread of the epidemic. What are the precautions for
nucleic acid testing?
Regular nucleic acid sampling and testing is an important measure to prevent the spread of the epidemic. At present, the epidemic situation is complex and severe, with multiple points, widespread and frequent occurrence. The demand for nucleic acid testing has increased, and many communities and units have set up nucleic acid sampling points. So, what things should we pay attention to before and after sampling?
1. Understand the working hours of the local nucleic acid sampling points in advance and whether you need to make an appointment in advance. Take your ID card (children carry their household registration book) and mobile phone (health code/travel code) to the nucleic acid sampling point in an orderly manner within the specified time.
2. To avoid vomiting during sampling, try not to eat 2 hours before sampling. To avoid affecting the test results, please do not smoke, drink, or chew betel nut and chewing gum 30 minutes before sampling.
3. To avoid cross infection, wear masks correctly and standardized before and after sampling, do not expose your mouth and nose, and do not remove masks at will in the middle.
4. Consciously abide by the on-site order, keep a one-meter distance when queuing, do not gather, or talk.
5. Actively scan the code and register your personal information truthfully according to the staff’s prompts. If you encounter a yellow code person, the staff should guide you to a sampling point specially set up by the yellow code person for collection.
6. Try not to touch the sampling personnel's clothing when sampling, do not place any items (ID card, key, mobile phone, bag, etc.) you carry with you on the sampling table, and do not touch the sampling table with your hands.
7. During the nucleic acid sampling process, when the current personnel have just finished the collection, the sampled personnel should not rush to sit down, and they should not take off their masks immediately. They should maintain a safe distance. After the doctor has finished the previous sampling, completed the disinfection of his hand, and took out a new cotton swab, then quickly go forward and sit down. When the doctor stretched out the cotton swab, he quickly took off the mask, and immediately put on the mask after cooperating with the doctor to take the sample.
8. After sampling is completed, you should pay attention to hand hygiene. Those with conditions should use disinfectant tissues and hand-free disinfectant to wipe their hands, wear a spare mask, and put the discarded mask into the designated medical garbage bag. Leave the sampling point immediately after completing the sampling point to avoid spitting and vomiting around the sampling point
