Curious, for those who know someone, or have suffered a breakthrough infection themselves (i.e. infection even though vaccinated) what vaccine did they get? I'm finding it interesting that all the ones I know of and have heard of, got the Pfizer vaccine. My sample size is obviously very small, but attempting to increase it. I also caught separate blurbs on TV that the Moderna vaccine was both longer lasting and more effective against the Delta variant. Not sure what their sources were though.
If my perception is correct, it may explain the faster track that the Pfizer has been on for booster approval. For now "experts' are saying we should get the booster from the same manufacturer as the original vaccinations we got.