Xinhua News Agency, Beijing, July 23 (Reporter Feng Yujing) As the delta strain of the mutated new crown virus is raging around the world, most parts of the world are still shrouded in the shadow of the epidemic.
Why do you need a booster shot? This is because the protective effect of certain vaccines may be weakened over time.
Another reason people may need to get a booster shot of the new crown vaccine is virus mutation
There is also a view that booster shots may be beneficial to the elderly or people with weakened immune systems, because their bodies may not have a strong enough immune response after the earlier vaccination, but there is still evidence to prove that they are given to these people.
Pfizer Pharmaceuticals Co.
The statement said that preliminary data from the trial of the third dose of the vaccine showed that the human body injected the third dose 6 months after the second dose, the body's level of neutralizing antibodies against the new coronavirus and mutant virus beta strains was higher than that of the two doses.
According to the statement, data from a recent paper published in the British journal Nature showed that the test found that the human body had a higher level of neutralizing antibodies to the Delta strain after the second dose of Pfizer vaccine
According to data previously released by the Israeli Ministry of Health, the protective effect of Pfizer vaccine has declined 6 months after vaccination, but it still has a significant effect in preventing severe illness
With the increase in the number of people who have completed the two doses of vaccination, the British government has also begun to consider implementing the third dose booster plan as soon as possible
Committee member But the British Ministry of Health also said that with the ongoing data analysis, the committee will be final recommendations are subject to change
Committee member A preprinted paper published by the US "Social Science Research Network" not long ago stated that Oxford University researchers used AstraZeneca vaccine as the research object and found that the third dose of the vaccine can greatly enhance the immune response
The World Health Organization also stated that there is currently insufficient evidence to show that a third dose of vaccine is needed
Jay Butler, deputy director of the US Centers for Disease Control and Prevention in charge of infectious disease prevention, believes that for those who have been fully vaccinated, the third dose of the vaccine may bring a higher risk of adverse reactions
The U.
Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said on July 11, “Given the data and information we currently have, we don’t need to vaccinate the people with the third dose (new crown vaccine).
Focus on the new crown pneumonia epidemic
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