I don’t know Zvi’s reasoning, but you’d be able to get such a booster upon news of that variant, which might be better than getting it several months before the variant. (But perhaps worse than “long enough before that you can get a fifth shot when it arrives”.)
I have some abstract concern about the possibility of developing immune reactions to mRNA shots so that we can only get a limited number of them over a lifetime. I haven’t looked into it in depth or even what experts think, it’s not right now gonna stop me from getting a shot that seems important, but it might swing me to no on a just-in-case.
I don’t know Zvi’s reasoning, but you’d be able to get such a booster upon news of that variant, which might be better than getting it several months before the variant. (But perhaps worse than “long enough before that you can get a fifth shot when it arrives”.)
I have some abstract concern about the possibility of developing immune reactions to mRNA shots so that we can only get a limited number of them over a lifetime. I haven’t looked into it in depth or even what experts think, it’s not right now gonna stop me from getting a shot that seems important, but it might swing me to no on a just-in-case.