“I think many experts believe that so-called herd immunity may not be achievable with this virus because it undergoes constant evolution. So what you’re looking at is this endemic state where people will get reinfected over time as immunity wanes,” chief public health officer Theresa Tam told a House of Commons health committee in mid-January.“

This is from that article.

I just want to say that I’ve been harping on the fact that coronavirus is a cold virus, one that causes in a very small population severe disease. But up to 20 percent may need hospital support with oxygen and we see that with influenza. Although not quite as much.

The virus mutates to evade all immunity like a cold does. Evade natural immunity and immunity from the previous vaccines. That’s why the vaccines won’t work over time.

They will keep having to make them and when there are so many variants over time they will be guessing which main variants to include in the vaccine just like the flu vax.

Vaccine will fail over time but may offer some protection if they guess the variants right one year. But at what risk? Risk for some may not be worth it and it should be your choice.