My niece is in healthcare in the NYC vicinity, and was the first person in the family to be vaccinated - with the Pfizer vaccine -back in January. Recently, before she got the Pfizer booster, she decided to have her antibody level checked. Zero. She had ZERO antibodies. I suspect that this is the situation with many of the “first in line” people who also got the Pfizer, because it was the first vaccine available. So for all practical purposes, I think Colin Powell was unvaccinated, and between his age and other health issues, he died just as so many of the elderly died in the first Covid wave. So these “breakthrough cases” aren’t really breakthrough at all, because they had no protecting from a vaccine.
Are there any breakthrough cases in the unvaxxed group? They’re not telling us.