Does COVID-19 Vaccine Need to be Boosted?

At present, there is no plan to vaccinate the fourth dose of COVID-19 vaccine, so it is not necessary to carry out annual booster injections in the future.

The fourth dose of COVID-19 vaccine is only in the theoretical stage, and there is no detailed vaccination data and vaccination plan, so the epidemic prevention personnel do not know how to fight against COVID-19 vaccine. It is said that the urgent task of vaccination now is to get the third shot. After the third injection, antibodies will be produced in the body, which will produce more effective resistance to the virus. As long as three doses of inactivated vaccine are fully inoculated, COVID-19 can be effectively resisted.

At present, the domestic COVID-19 vaccine is still in the third injection stage. As long as the third injection is strengthened, the body's immunity will be enhanced. As for the fourth point, there is no specific plan at present, and relevant departments are also discussing and studying it. The detailed data depends on the results of the later research. Some professionals said that the second-generation vaccine against the mysterious Crohn's disease may be injected as the fourth dose of COVID-19 vaccine to enhance its effect, which is better than the previous vaccine, and it is a symptomatic drug.

After the introduction of the fourth dose of COVID-19 vaccine, it is not necessary to achieve full vaccination. Older people over 60 years old with immunodeficiency can be given priority. Their bodies are relatively weak against viruses. After giving priority to the fourth dose, more antibodies can appear in the body, which can effectively resist Omicron and prevent infection by this virus. Other ordinary people can determine whether a fourth injection is needed by detecting the antibody level in the body.

From the latest information released by relevant departments, it can be seen that it is unrealistic to have a booster shot every year in the future. Step-by-step injection may develop like the current flu vaccine. People with low immunity and immunodeficiency can take the initiative to receive the booster injection of COVID-19 vaccine, while other ordinary people will receive the booster injection on a voluntary basis. Unnecessary people don't need to get a booster vaccine every year. However, how to vaccinate the fourth batch of COVID-19 vaccine depends on the specific situation of epidemic development and virus variation.