Original title: The province’s disease control experts in response to the mutation of the new crown virus bring you a comprehensive strategy for vaccination
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New Coronavirus FrequencyComplicatedMutations
Face Alpha, Beta, Gamma,
Delta, Lambda
What can we do?
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Disease control experts tell you:
Vaccination is still effective
Mass vaccination effectively forms a population immune barrier
Is the most effective means of epidemic prevention and control
Wear a mask, wash your hands frequently, ventilate more, and gather less
These personal protective measures must still be maintained
The new coronavirus we care about
In addition to “Delta”, what else?
All viruses, including the new coronavirus, will change over time. Most changes have little effect on the characteristics of the virus. However, some changes may affect the characteristics of the virus, such as how easy it is to spread, the severity of related diseases, or vaccines, therapeutic drugs, etc. Since 2020, the names of various new coronavirus mutant strains have been constantly appearing in our field of vision, such as the British mutant Alpha, the South American mutant Gamma, and the Indian mutant “Delta” Delta.
The World Health Organization and its related experts have classified the new coronavirus mutant strains based on the characteristics of changes in virus infectivity, changes in virulence, public health and social measures, or the effectiveness of available diagnostic methods, vaccines, and treatment methods. The most important ones are There are two categories:
1. Variant of concern (VOC)
At present, the new crown mutants that have the greatest impact on the epidemic and also the greatest threat to us are 4 VOC variants, namely Alpha, Beta, Gamma and Delta.
2. Variant of interest (VOI)
In addition to the 4 VOCs, the latest 4 VOIs are Eta (B.1.525), Iota (B.1.526), Kappa (B.1.617.1) and Lambda (C.37).
VOC has the greatest impact on the global new crown epidemic, while VOI has an impact but has not yet reached the level of VOC. But VOI should not be underestimated. Under certain conditions, it may become the next VOC.
The virus variants in VOC and VOI are not static. When a variant strain has an increasing impact on the epidemic, it may be “upgraded”. Conversely, some mutant strains will also be “downgraded” because of their reduced threat. The World Health Organization will conduct an assessment based on the monitoring results to make corresponding adjustments.
The vaccine in the human body is
How does it work?
After being vaccinated, the human body will produce protective antibodies, and some vaccines will also allow the human body to produce cellular immunity and form a corresponding immune memory. In this way, the human body has immunity against diseases. Once a new coronavirus invades the human body, the antibodies produced by the vaccine and the cytokines released by cellular immunity can recognize, neutralize or kill the virus, and immune memory will quickly mobilize the immune system to function, preventing the virus from continuing to multiply in the body, thereby To achieve the purpose of disease prevention.
Current new coronavirus vaccine
Is it effective against mutant strains?
Vaccination against the new coronavirus can reduce the risk of infection and disease in the population, reduce the transmission of infected persons, and effectively reduce the incidence of severe illness and mortality after infection. At present, the delta variant strain has been circulating in 148 countries and regions around the world. The latest scientific research data shows that in people aged 18 and above, the entire domestically-made new crown inactivated vaccination is completed (14 days after the second vaccination, two vaccination The vaccine protection rate for mild and common patients with delta variant strain of new coronary pneumonia is about 78% and 70%, and the vaccine protection rate for severe patients is 100%.
Our province is currently
What new coronavirus vaccine is used?
What is the vaccination procedure?
At present, there are two types of new coronavirus vaccines used in our province: one is the inactivated new coronavirus vaccine (Vero cell), which is produced by Sinopharm China Bio-Beijing Institute of Biological Products Co., Ltd. (Beijing Institute, Changchun Institute) and Beijing Kexingzhong Produced by Wei Biotechnology Co., Ltd. Inoculate 2 doses. The recommended interval between the 2 doses is ≥3 weeks, and the second dose should be completed as soon as possible within 8 weeks. The second is the recombinant new coronavirus vaccine (CHO cell), produced by Anhui Zhifeilongkoma Biopharmaceutical Co., Ltd. Inoculate 3 doses; the recommended interval between two adjacent doses is ≥4 weeks. The second dose should be completed within 8 weeks after the first dose, and the third dose should be completed within 6 months after the first dose.
Finally, we remind residents who have not yet received the new crown vaccine to go to the vaccination clinic near their place of residence as soon as possible to build a national immune barrier, protect themselves and others.
Editor: Baiyun
Review: Zhang Lijie Zhang Libing
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