I'm wondering what research you have seen conflicting with this? As far as I'm aware this is the first CDC study that plainly studies vaccine status/prior infections impact on large scale. There were two widely publicized CDC studies with either very strange looking biases baked in (hospitalization prior) or it was done during an optimal vaccination window (within just few months of mass vaccination).
Who knows what Delta or Omicron will do relative to the O.G. for immunity but I'd be willing to bet its perty darn good (+/-25% O.G. vs unknown variant of future).
Who knows what Delta or Omicron will do relative to the O.G. for immunity but I'd be willing to bet its perty darn good (+/-25% O.G. vs unknown variant of future).