Latest CDC report on Vaccine effectiveness;
https://www.cdc.gov/coronavirus/2019...ed-people.html
Under Conclusions;
These findings, along with the early evidence for reduced levels of viral mRNA and culturable virus in vaccinated people who acquire SARS-CoV-2 infection, suggest that any associated transmission risk is substantially reduced in vaccinated people: even for Delta, evidence suggests fully vaccinated people who become infected are infectious for shorter periods of time than unvaccinated people infected with Delta.
Which rubbishes any assertion that vaccines don't curb transmission. Which was a big statement in the commissioners against argument.