打了疫苗的人对变种更易感,病情也会更严重,机理原文如下: Original antigenic sin Speculation that vaccines could paradoxically increase the risk of infections possibly originated following the 2009 influenza A (H1N1pdm09) pandemic, when four Canadian studies suggested that getting the seasonal influenza vaccine increased the risk of laboratory-confirmed infections. This led to five additional studies, each of which substantiated these initial findings. One proposed mechanism for this phenomenon is called original antigenic sin. It was first used to describe how one’s first exposure to the influenza virus shapes the outcome of subsequent exposures to antigenically related strains. (The antigen is the part of the object that provokes the immune response – like the novel coronavirus’s spike protein.) This specific immune phenomenon explains the failure of the immune system to generate an immune response against related antigens. When an individual is infected by an evolved strain with a new dominant antigen, slightly different from the original strain against which the person has been vaccinated, the immune system produces antibodies against the original strain. This happens through high-affinity memory B-cells that inhibit activation of naïve B-cells, resulting in a weak immune response against the newer strain. So the risk of infection paradoxically increased in vaccinated individuals compared to unvaccinated individuals.
一切皆未知 We should not dismiss this phenomenon as being related only to unsafe or inappropriate behaviour, even if both factors lead to complementary outcomes. Instead, we should make every effort to investigate whether our vaccines have this effect, focusing some of our efforts on developing multi-strain vaccines, and ensure adherence to COVID-appropriate behaviour
楼主没读自己发的文章吗? The susceptibility to infections appears to be particularly high immediately after vaccination (either due to lower immunity or due to unsafe behaviour) 还有Moderna争对变种的第三针booster shot 已经实验证明mRNA疫苗对变种有效,可见没有免疫原罪的问题。印度目前只有两种疫苗可以打,印度自主研发的的灭活疫苗Covaxin,和印度帮AZ生产的牛津疫苗Covishield。
http://science.thewire.in/the-sciences/how-novel-coronavirus-variants-could-complicate-our-covid-19-vaccination-drive/
The susceptibility to infections appears to be particularly high immediately after vaccination and an advocacy campaign on the need to remain vigilant will help mitigate this risk.
看知乎上说印度是打疫苗的排一个队,边上紧挨着的就是测核酸的队,经常有人排到了才发现排错队了。不知道这个现象有多普遍,如果都这么搞的话,考虑到印度现在去测核酸的至少四分之一都在不停地往外喷病毒,我觉得刚打完疫苗的人更容易中招真的是可以想象的事情。。。
还有Moderna争对变种的第三针booster shot 已经实验证明mRNA疫苗对变种有效,可见没有免疫原罪的问题。印度目前只有两种疫苗可以打,印度自主研发的的灭活疫苗Covaxin,和印度帮AZ生产的牛津疫苗Covishield。
六樓七樓的出來說說了,樓主反駁一下吧?
还有印度哭着闹着要美国放弃mRNA知识产权,原来是想要毁灭印度。