On top of that, early on when the vaccine supply was constrained we didn't have enough data to know whether natural immunity was as effective as vaccination, an

On top of that, early on when the vaccine supply was constrained we didn't have enough data to know whether natural immunity was as effective as vaccination, and now vaccine supply in the US is in surplus[1], so there is no reason to be selective in who receives it. So natural immunity didn't make sense to consider in the vaccination plan. It might make sense to consider in the booster plan though - if you've had a positive Covid test before or after being vaccinated, consider the later of those two actions to be a booster, and don't get another one. That would free up more doses for the rest of the world. [1]We have a large amount of vaccine that has/is expiring shortly but there isn't enough time before the expiration date to redirect them overseas.