Official website screenshot
Official website screenshot Recently, the "Lancet" published a study online that pointed out that even for the delta variant, the existing new crown vaccine has a high vaccine efficacy against severe COVID-19, and it is not recommended for the general population to receive a booster shot of the new crown vaccine
It is reported that the study was completed by an international team of scientists (some members come from the WHO and the US Food and Drug Administration)
The unanimous conclusion reached in observational studies is that the vaccine is still highly effective against severe cases of new coronary disease, including those caused by all major virus variants
Researchers pointed out that although vaccines are not as effective in preventing asymptomatic infection and virus transmission as preventing severe new coronary disease, even in people with high vaccine coverage, the few people who have not been vaccinated are still the main factor in virus transmission, and they He also faces the highest risk of suffering from the severe disease of the new crown
The corresponding author of this article and Dr.
The article also pointed out that over time, even if the vaccinator's antibody level declines, it will not necessarily weaken the vaccine's protective efficacy against severe new coronary disease
In addition, the existing vaccines can induce antibody responses against the current variant strains, indicating that the existing variant strains have not evolved to the extent that they may escape the memory immune response induced by the vaccine
The researchers said that although new virus variants that can escape existing vaccines are evolving, they are most likely to come from strains that are already widespread
For example, influenza vaccines use a similar strategy.
Dr.
Related paper information: https://doi.
https://doi.
org/10.
1016/S0140-6736(21)02046-8
This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only.
This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of
the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed
description of the concern or complaint, to
service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content
will be removed immediately.
![9-[1,1'-biphenyl]-4-yl-3,3'-Bi-9H-carbazole](https://file.echemi.com/fileManage/upload/category/ac71ac0d-8ef6-11ec-89e5-fa163ed06441.png)
