Earlier quoted context omitted.
"Significantly less effective" is still a lot higher than most new vaccines and higher than the prophylactics you propose. The loss in effectiveness isn't even that big of a deal. It only really matters for those most at risk. And it's hard to say how much longer the third dose will last, but knowing how the immune system works, I'd guess it will be more than 6 months, provided there is no escape mutation. Delta isn'…
True. >Delta isn't an escape variant, btw, it's just a really fast worker. It's faster, more transmissable, infectious, shorter incubation period and a 1000fold increase in generated virus particles compared to other variants. But is also has mutations in its spike and nucleocapsid that warrant developing new vaccines, certainly when it's at the moment the dominant strain by far and even more virulent variations are…
It will take a lot of time to gather enough data to confirm any new vaccine as actually being better and safer than Comirnaty against Delta... Just saying "This vaccines was especially designed for this" isn't enough.