:: The COVID mRNA ones start north of 90% ::
Some background, please.
Common-sense understanding of any “vaccine” is directed toward immunity.
It appears that the COVID-19 vaccine is directed toward “prophylaxis” ONLY.
No, it's both.
Both Pfizer and Moderna start above 90% in preventing infection. I assume that's what you mean by immunity.
Over time this protection appears to wane but the effectiveness in preventing severe disease says very high. Is that how you're interpreting prophylaxis?