What are the benefits of COVID-19 vaccine? With the popularization of vaccines in COVID-19 and vaccination in all parts of the country, there are still a few people who are worried about whether the vaccines will affect them. Even if it is harmful, the advantages outweigh the disadvantages. Let me look at the benefits of COVID-19 vaccine with you.
What are the benefits of COVID-19 vaccine? 1 what are the benefits of COVID-19 vaccine?
COVID-19 will be the resident virus of the future, and it will exist forever. For everyone, the reason for vaccination is simple: if I get infected in the future, I will be fine. The protection rate of our inactivated vaccine against weight gain is above 90%, and the protection rate against death is close to 100%. Therefore, vaccination is to block transmission at the national level, not at the personal level.
How many kinds of vaccines are there in COVID-19?
1, the first type: live attenuated vaccine.
Attenuated live vaccine is a vaccine that attenuates pathogens in the laboratory, weakens or even eliminates their pathogenicity, but retains their growth or replication ability and causes immunity. Commonly used live attenuated vaccines include BCG, measles vaccine, oral polio vaccine and varicella vaccine. The pathogens in live vaccine can reproduce in vivo, with good immune effect and long immune protection time, but there may be potential pathogenic risks to immunocompromised people.
2. The second type: inactivated vaccine
Inactivated vaccine is a vaccine that first cultivates pathogens and then inactivates them by physical or chemical methods. Inactivated vaccine, also known as "dead vaccine", does not have the ability to cause disease and reproduce. Common inactivated vaccines include DTP vaccine, Japanese encephalitis inactivated vaccine, hepatitis A inactivated vaccine and influenza inactivated vaccine. Inactivated vaccines usually need multiple vaccinations to obtain better immune effect and lasting immunity. Inactivated vaccines have high requirements for biological safety and other production conditions, and the production cost is also high.
3. The third type: protein subunit vaccine.
Subunit vaccine refers to a vaccine made by extracting or synthesizing a part of pathogen shell to make it have a characteristic protein structure that coincides with recombination vaccines. Because only a part of the structures that can cause immune response are selected, the risk of adverse reactions caused by vaccines can be reduced theoretically, and the safety is better.
4. The fourth kind: genetically engineered vaccine.
Genetic engineering vaccines are vaccines prepared by recombining antigen genes with other cells, viruses and plasmids through genetic engineering, or directly synthesizing gene sequences through technical platforms, including virus vector vaccines, nucleic acid vaccines (DNA vaccines and mRNA vaccines) and so on.
Generally speaking, people who have been vaccinated with COVID-19 vaccine will not regret it. Finally, through the follow-up of patients who were vaccinated with COVID-19 vaccine, most patients showed no adverse symptoms after vaccination.
What are the benefits of COVID-19 vaccine? What are the benefits of vaccination?
At present, the epidemic situation in COVID-19 in China is different from that in foreign countries, and the vaccine use strategy is also different, which should be considered in combination with the domestic epidemic situation and prevention and control objectives. A few days ago, China CDC released "Questions and Answers on Vaccination in COVID-19" (hereinafter referred to as "Questions and Answers"), in response to public concern about vaccination.
The infectivity of different infectious diseases is different, and the immune level of people who block the epidemic of infectious diseases is also different. The question and answer pointed out that, generally speaking, the more infectious an infectious disease is, the higher the immunity of the people who need it. Population immunity is directly proportional to vaccine protection efficacy and vaccination rate. Therefore, to achieve sufficient population immunity, it is necessary to have a high enough vaccination rate, that is, the vast majority of people have been vaccinated. On the other hand, if many people don't vaccinate or most people don't want to vaccinate, they can't form a solid immune barrier, and when there is a source of infection, it is easy to spread diseases. At present, the vaccination of key populations in China can protect these populations on the one hand, and it is conducive to "external defense investment and internal defense rebound" on the other hand, which is conducive to the overall epidemic prevention and control in China.
The existing research shows that almost all people in China have no immunity to COVID-19, and they are generally susceptible to COVID-19 infection. After the onset of infection, some people will develop into critical illness and even lead to death. Not long ago, the first COVID-19 vaccine in China was officially listed. "Q&A" pointed out that after vaccination, on the one hand, most people can gain immunity; On the other hand, through the orderly inoculation of COVID-19 vaccine, we can gradually establish an immune barrier in the population and block the COVID-19 epidemic.
Ceng Yixin, deputy director of National Health Commission and head of the vaccine research and development class of the State Council Joint Prevention and Control Mechanism, said that at present, China's expert advisory committee on immunization planning has formulated a unified vaccination plan, which will enable all eligible people to "get what they need" and gradually build an immune barrier in the whole population, thus blocking the spread of COVID-19 and completely controlling the COVID-19 epidemic.