Vaccination still reduces infectivity even for those who've had COVID.

https://www.cdc.gov/mmwr/volumes/70/wr/mm7032e1.htm?s_cid=mm...

Vaccine antibodies bind more broadly to cover new variants, vs. antibodies from previous infection.

https://www.science.org/doi/pdf/10.1126/scitranslmed.abi9915

So why is "accommodation" necessary?