Wonder how this change the benefit vs risk trade-offs. I've personally known two people who had myocarditis and ER visits after the vaccine (which seems unlikely for a X in 100,000 event; given I probably only know maybe fifty people tops who might share their adverse reactions with me), but if vaccines provide lasting protection, rare side effects can be justified.
Now, if annual boosters are required (along with the associated risks for myocarditis and other side effects), for young/healthy/fit people, it could very turn out that the harms outweigh the benefits.
Now, if annual boosters are required (along with the associated risks for myocarditis and other side effects), for young/healthy/fit people, it could very turn out that the harms outweigh the benefits.