Their conclusion is that both fully vaccinated and completely unvaccinated are officially undercounted.

“As for the precise number miscounted, that’s unknown, but revisions in data from three states – Illinois, Pennsylvania and West Virginia – found enough over-counting of first shots to suggest that there are plenty of unvaccinated people nationally who’ve mistakenly been counted as having received a dose.”

https://www.zerohedge.com/covid-19/truth-we-have-no-idea-cdc-data-missed-millions-unvaccinated-americans