No. They had their most prominent proponents like Fauci who, yes, does, as a matter of fact, represent the medical establishment, insist that covax created immunity. They imposed odious shutdown policies internationally over this and went after people’s livelihood for doubting this. They bet their credibility on this and they can’t shift the goalposts.
To be “effective” it must give outright immunity to COVID. It didn’t. So it isn’t effective. “Safe and effective”? Fact check:
FALSE