Just for reference and to show that RU isn't the outlier if it hasn't been posted previously, the B1G schools that have Covid vaccine requirements for enrolled students for the fall 2022 semester include Rutgers, Ohio State, Michigan, Michigan State, Maryland, Indiana, Illinois, Northwestern, and Minnesota. That's 9 out of the current 14 B1G member schools.
Updated List of Schools Requiring Covid Vaccines
Updated List of Schools Requiring Covid Vaccines