Euronet, February 26, according to the Euronet News Agency, in the past month, at least four top journals have published research reports showing that test subjects who have been vaccinated with the new crown vaccine have the ability of the immune system to destroy the new coronavirus. Can last for many months or even more than a year. The study shows that people do not need to be vaccinated every few months to maintain immunity.
Research finds that vaccine antibodies are effective for more than one year.
One of the studies showed that the Pfizer-BioNTech, Moderna, Johnson & Johnson and Novavax vaccines work against the Omicron variant, the New York Times reported. The ability of the strain (Omicron), and its resistance to Omicron is 80% that of other variants. Since the degree of the Omicron variant is much higher than previous variants, experts believe that the immune T cells generated by these four vaccines have great ability to deal with future mutant strains.
A recent study released recently shows that the third booster dose of the mRNA vaccine produced by Pfizer-BioNTech and Moderna can cause B cells, another type of immune cell in the body, to produce a large number of different antibodies, making any new coronavirus variant virus more susceptible to infection. strains are difficult to avoid.
John Wherry, director of the Institute of Immunology at the University of Pennsylvania, said that there is increasing evidence that boosters have an increasingly low return rate, although older people may be at higher risk. A fourth shot would be beneficial in groups, but most other people may not need it.
Research shows that three doses, or even just two, are enough to protect most people from severe illness and death over the long term. Wheely said that while people over 65 or at higher risk for the disease may benefit from a fourth dose, it may not be necessary for most people.
White House chief medical adviser Anthony Fauci (Anthony Fauci) said the government is unlikely to recommend a fourth dose of the vaccine before the fall. The Omicron variant evades the antibodies produced by both doses of the vaccine, immune molecules that prevent the virus from infecting cells. Studies have shown that the antibodies produced by the third dose of the Pfizer-BioNTech or Moderna vaccines are difficult for any virus variant to evade.
Research shows that the various antibodies produced should be able to protect people against new variants, even those that are significantly different from the original version of the virus. For most people, a fourth dose of the COVID-19 vaccine is clearly not necessary. (Ying Yongfeng)
