Which is depressing - as sometimes predictions are off and the vaccine is much less effective than anticipated - and often many people come down with the flu each year in spite of the availability of vaccines.
COVID-19 unfortunately is much more lethal than the flu (save for certain - e.g, 1918 - flu variants).
Worst case - vaccinations just prevent infection from the previous strain - to ensure safety of the populace, extant distancing/masking/safety protocols are necessary perhaps in a slightly attenuated form - which obviously has a massive impact on our economy.
On the whole, a deadly, mutating virus able to evade vaccines - is a very upsetting development.
Yet I've some hope - as bioengineering is experiencing exponential growth in sophistication. We might well develop some sort of silver bullet in the next decade or two.