I have to agree about "line of work" issues. To use a silly example, I work for our state department of transportation. If I were adamantly opposed to motor vehicles, I shouldn't have even applied for the job.
Yeah, and that's exactly what I'm talking about. Another example would be a vegan working as a butcher and scoffing at the idea of handling meat when asked to do it. One would naturally ask, well... why the hell did you become a butcher then?
You would expect the question or issue would eventually come up. In the case of the medical field, I'd consider this an emergent development, and if a widespread disease occurs, you shouldn't have to think twice about it, you'd just do it because it's part of the job. I could understand being against childhood vaccines, but I would think an endemic or pandemic would make vaccination categorically a step up from those. It baffles me that so many nurses are against being vaccinated in a time like this.