Bullshit. Occupational health would not entertain this for a minute. I'm a nurse and prior to joining my trust I had to prove every single one of my vaccinations or I wasn't able to start. Some as uni. The rules don't change because of a crappy template that's not worth the paper it's written on. I know some people I work with have been told they will be let go if they can't prove they are either exempt or have been vaccinated.Sure... Ofcourse this is genuine.
I don't understand why healthcare professionals doubt the science so much. That's literally why you're getting into the job. How many of them can hand on heart say they've sat there and genuinely thought of every single ingredient that goes into every medication they've ever administered? They don't. They read the evidence base behind such things and trust them.