For one, the immunity of those who have recovered from COVID and their ability to transmit the virus are not proven to be different than that of the vaccinated.
Almost 600 colleges and universities have mandated COVID-19 vaccination for students attending classes in the fall semester. Most of these schools have also mandated vaccination for faculty and staff. They all say the objective is to provide a “safe” campus environment. The University of Notre Dame, for example, stated in a recent “Policy Update” that its “highest priority” is the “health, safety, and well-being of every member of this community.”