I don’t know what the numbers are for college vaccines but haven’t heard of a big reluctance in those communities.
For my own kids, who are 24 and 25, their current reluctance was timing. One was taking the PE exam and didn’t want to get vaccinated while she was studying and just before the exam date in case she had a reaction. Today she started back to working from her office (and transferred from another state during the last year so it’s her first day in this office).
The other daughter lives in another state where the vaccinations are not as available. She too wants to time the vaccination in case there is down time. She is going back to school in the fall so will have to get it soon. She also has some travel plans this summer so I’m hoping she gets it soon.
I think some college students might be reluctant to get a vaccination during finals in case there is a reaction. No one wants to lose 24-48 hours of studying time during finals.