In early July, Zhang Boli, an academician of the Chinese Academy of Engineering, was interviewed and answered questions related to the BA.5 strain. In addition, academician Zhang Boli made five suggestions on the preventive measures for the new strain of BA.5 of the new crown virus, of which the rapid detection of new crown nucleic acid is the focus of the work:.
First, BA.5 strain close contacts take Chinese medicine for prevention as early as possible, and should give full play to the advantages of accessibility of Chinese medicine in the prevention and control of neo-crown pneumonia. Chinese medicine should be fully utilized in the prevention and control of the NCC epidemic, and it is of great value for the population of close contacts and those with high-risk factors to take advantage of Chinese medicine's "treating the untreated" to build a second line of defense against the NCC epidemic and provide another layer of protection for the public in addition to the vaccine.
Second, it is recommended to popularize nucleic acid antigen testing to deal with the spread of new strains. New mutant strains are highly infectious, and in some grassroots areas that do not have rapid nucleic acid testing capabilities for new crown, or for some people at relatively high risk of infection, antigen testing is used to detect results in a shorter period of time. Save a lot of time and manpower for subsequent accurate prevention and control. However, antigen testing cannot replace rapid nucleic acid testing for new coronary artery disease, and rapid nucleic acid testing for new coronary artery disease is still the "gold standard" for confirming the diagnosis of patients with new coronary artery disease.
BA.5 has a strong ability to break through infection, and the protective barrier effect of whole vaccination is weakened, but it still has a definite effect of reducing the rate of serious illness and mortality. Vaccination with whole vaccine is effective in preventing serious illness and death.
Fourth, strengthen the efforts to trace the source of transmission. Respond to changes, control rapidity with rapidity, carry out traceability and flow investigation more closely, strive for faster and more accurate traceability, ensure that no one is missed in close and sub-close contacts, focus control on high-risk groups, achieve early detection and isolation and early treatment, and interrupt further spread of the epidemic.
Fifth, the public is advised not to travel to medium and high-risk areas.
The movement of people is also an important way for the spread of the new coronavirus. Blocking the frequency of movement of people in high-risk areas can effectively reduce the risk of transmission.
No matter how the epidemic changes, rapid nucleic acid testing for neo-coronavirus is the fundamental constant! The Nucleic Acid Rapid Test is a sophisticated and sensitive test. It targets specific fragments on the genetic material (rna) of the virus. The target sequence of the nucleic acid test (RT-PCR) is selected from two genes: the ORF1ab gene and the N gene as two targets for detection, which can prevent missed and false detection to a certain extent.
Due to its rigorous nature, the experiment takes a long time and requires four steps to complete the whole experiment, including "sample collection, sample pre-treatment, nucleic acid extraction and pcr amplification".
In addition, the efficiency of New Crown Nucleic Acid Rapid Test is also improving due to the continuous progress of technology. At present, New Crown Nucleic Acid Rapid Test System can complete the pcr amplification process within 30 minutes, and the portable design can shorten the time spent on sample transfer and produce accurate results quickly. It can serve for fever clinic, airport customs and many other scenarios.
