Is the Omicron variant highly harmful? How did the Omicron variant come about

Recently, the Omicron variant has attracted global attention. As of now, it has appeared in 19 countries and regions including Australia, Austria, Canada, Czech Republic, Denmark, and Germany. How severe is the Omicron variant? How did it come about specifically? What virus is it? 1、 How severe is the Omicron variant? The infectivity of Omikron virus strain is 3

7.5% higher than that of Deltavirus. Although its infectivity is higher than that of Deltavirus, it belongs to COVID-19, and it cannot completely break through the immune barrier, because our human body has T cell immunity in addition to antibody immunity. In addition to the current inactivated vaccine, adenovirus vaccine, booster needle vaccine, etc. in China, as well as the subsequent development of second-generation vaccine, it can respond well to the Omikron virus strain. According to the epidemiological report of COVID-19 recently released by WHO, it is pointed out that the current global epidemic is still Delta virus, which accounts for 9.8% of the total, while the proportion of Omikjon virus is less than 0.1%, so don't panic. According to statistics, 19 countries and regions, including Australia, Austria, Belgium, Botswana, Canada, the Czech Republic, Denmark, Germany, Israel, Italy, the Netherlands, Portugal, South Africa, Spain, the United Kingdom, Sweden, Japan, and Hong Kong, China, have seen the Omicron virus strain. 2、 How did the Omicron variant specifically come about? The Omikjon virus strain carries a series of unusual mutations, so it may be the variation of a chronic patient with a confirmed case of low immunity during infection, or it may be from an untreated AIDS patient. The Omicron variant was first discovered in South Africa on November 9, 2021, and cases of this variant are increasing in almost all provinces of South Africa. 3、 What is the Omicron variant virus? The Omikjon virus strain is a variant of COVID-19 B.

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1.529. Like Delta virus, it still belongs to COVID-19, but its amino acid has accumulated mutations. The Omicron variant has important amino acid mutation sites in the VOC variant Alpha, Beta, Gamma, and Delta spike proteins, including mutation sites that enhance cell receptor affinity and virus replication ability. At the same time, there are triple mutations of "K417N, E484A, and N501Y". According to research, if the S protein of COVID-19 has K417N, E484A, or N501Y mutations, it means that the immune escape ability is enhanced. However, the immune escape ability of Omikron against existing vaccines needs further monitoring and research. Conclusion: The infectivity of the Omikron virus strain is 3

7.5% higher than that of Deltavirus. Because it carries a series of unusual mutations, it may come from the mutation of an untreated AIDS patient or a chronic patient during infection, but it still belongs to COVID-19, so even if it is more severe, it is impossible to completely break the immune barrier.