Don't forget that no vaccine is 100% effective. There have been breakthrough cases requiring hospitalization and even some deaths.
https://www.cdc.gov/vaccines/covid-19/health-departments/bre...
https://www.cdc.gov/vaccines/covid-19/health-departments/bre...
We don’t go back to normal when the earth is a sterile disease free environment, we go back when the outsized risk of this particular disease reduces to the noise floor of everything else.
"When you get to hell, tell smallpox we said hello" - XKCD