Why should a University Professor (or some benefactor) have to spend (hundreds? tens) of thousands of dollars defending their naturally derived antibodies? The

Why should a University Professor (or some benefactor) have to spend (hundreds? tens) of thousands of dollars defending their naturally derived antibodies? The result of that effort didn't even result in a University making broad exception for those with "suitably up-to-snuff immunities", they just let the one guy teach. I'm under the impression that the vast majority of mandates have exceptions for existing immunity, no?