The woman profiled in this article is a good example of what I was saying here. Ms. Piccioni got a J&J shot last year. More recently she decided she needed a booster (even though no booster has been authorized) so she got both doses of Pfizer. Although the article doesn't mention it, that means she was probably counted as two different fully vaccinated people in the vaccination statistics. Because we don't know how many people there are like Ms. Piccioni, we don't really know what the real fully vaxxed rate is anywhere in the country.