(Geneva Composite Electric) A large -scale study led by the World Health Organization shows that those who have been infected with crown diseases and vaccinated vaccines are sufficient to protect them from severity and admission treatment for a long time.
This international study analyzed more than 20 studies from January 2020 to June 2022 to understand how much protection can be provided by the antibodies produced by infection and vaccination, and how much antibodies produced by infection.
According to the analysis report published on Wednesday (January 18) in an authoritative medical journal -published by infectious diseases, infected and vaccinated vaccines, that is, "hybrid immanty", can prevent more than 97%of those who can prevent more than 97%Severe diseases or hospitalization; from the recent dye or vaccination time point, the protection period can be up to 12 months; the additional six months of protection can be provided.
However, for those who only take two doses of vaccine, after their infection, the effectiveness of antibodies produced by infection will drop to nearly 42%after a year.After inoculating the additional inoculation, after six months, the effect was still more than 46%.
As for those who have not been vaccinated, the antibodies that they produce after the infection of the crown disease are relatively high in preventing the protection of severe illnesses and hospitalization after one year.It will weaken to less than 25%.
WHO issued a statement: "Analysis report shows that mixed immunization provides better protection, which proves that it is good for vaccination even after infection."
TheReport pointed out that these findings can be used to formulate the guidance principles such as the number of times and interval time for the formulation of coronary vaccines."People with hybrid immunity are the most strong and most long -lasting. Compared with those who have never been infected with crown disease, they may be longer in vaccination."
TheReport believes that for those who have been infected with crown disease and complete two -dose vaccination, the time to vaccinate the additional additional dose is delayed to the "may be reasonable" after six months of infection or vaccination.
Experts have previously held different views on the interval between vaccine vaccination and whether all age groups are necessary.
The US Food and Drug Administration (FDA) will meet with a set of external consultants next Thursday (January 26) to discuss whether the vaccination policy should be revised according to the development of the crown disease.
FDA said in the announcement of this meeting: "Since the authorization of the crown disease, we have learned that the vaccine protection will weaken over time, especially the virus will rapidly mutate, and new variants and Asia will appear.Type -type strains ... Therefore, it is important to continue discussing the best combination of coronary vaccine and additional additions, as well as the best interval time for additives. "
