Maybe now some people will believe when I talk about cross reactive immunity. There are many redundancies in the immune system. It takes a lot for a whole world to be taken by surprise like it happened with COVID. Which is why we don’t have a new pandemic every year.
https://twitter.com/ct_bergstrom/status/1358934389422313472
I wrote this thread about vaccines. But it also holds true for natural infections. The dose of exposure and presence or absence of repeated exposure determines durability and robustness of the immune response.
https://twitter.com/vincentrk/status/1353772202076868608
And why I’m confident that vaccines specifically designed to combat COVID 19 will be effective in preventing serious disease against new mutant variants.
The mutations have to be severe enough to make SARS CoV-2 into a new virus altogether to reduce protection significantly.
The mutations have to be severe enough to make SARS CoV-2 into a new virus altogether to reduce protection significantly.
And even then as you can see there is cross reactivity between current vaccine response and original SARS virus. So total surprise of the immune system to a variant resulting in an IFR of 0.5-1% is unlikely.
• • •
Missing some Tweet in this thread? You can try to
force a refresh
