As far as Im aware, vaccination was voluntary so individuals had...

As far as Im aware, vaccination was voluntary so individuals had the choice therefore the Hippocratic Oath doesn't apply.
Employers have a right to require vaccination, just as they have a right to discriminate against people with a criminal record.
You don't realise that every single medical procedure has risk associated with it, if it were up to ideologues like you we'd all just be locked away taking no risks in life, loser.