You are missing the most basic fact about vaccines
Vaccines can not and do not prevent infection.
Only their function is to fight virus AFTER infection takes place, this increases odds of recovering with only mild symptoms or no symptoms at all.
Common sense tells us that a seriously sick patient will exude more virus material than one with mild symptoms or no symptoms.
As for vaxxed people getting infected in higher numbers, again use your basic common sense. 255+ Million Americans have been jabbed already. Mostly more adults than kids. 10:1 ratio. There just are not many unvaxxed left to get infected
My basic common sense is just fine, thank you very much. How are your basic reading skills? I assume you bothered to go to the link I sent to you..... You did catch this note under the charts, didn't you? Rate per 100,000 (7-day average) is the average rate of COVID-19 cases per 100,000 for each vaccination status for the previous 7 days as noted. Rate of COVID-19 cases per 100,000 is calculated by dividing the number of cases for a vaccination status, by the total number of people with the same vaccination status, and then multiplying by 100,000.
What you see at the link is all in terms of "per 100,000 for each classification (they use the term 'vaccination status').
As for your comment about "Vaccines can not and do not prevent infection....", I could comment but it's Saturday, nice outside and I don't want to spend that much time.