[M4v3R]

> Is it not like our situation with the flu?

No, as other commenters pointed out coronaviruses are different from the flu viruses in that they cannot mutate as easily as flu does. Hence it is possible that booster shots will not be required.

[chaostheory]

That also doesn't mean that that there's no longer a decent chance of immune escape. Before this research came out, it was a reasonable position to think that we needed boosters. It is NOT a conspiracy theory.

If you read any of the articles I've cited one of them has the CEO of Pfizer stating that we will likely need a yearly booster shot.