The “spike protien” is the mechanism for infection of human cells by COVID-19. Until the virus mutates to the point it has another mechanism to infect cells, the vaccine should provide protection regardless of other mutations.
I had the Pfizer poke. No side effects to date. At my location, they had 10 vaccination booths. One Moderna, nine Pfizer. It was the best run Government process I’d ever seen. I told my wife, someone was smart enough to let the Nurses take charge.