Unfortunately there are forces deliberately spreading vaccine FUD, so it's not solely negligence to still be unvaccinated.

> At what point does not getting a vaccine become negligence?

I don't know and I don't care as I said in my previous comment. When does not quitting smoking become negligence?

Negligence is bad, but they don't deserve to die if they can't afford health care.

I live in a country with free health care. No one is going broke from health costs here. However, people not getting the vaccine are filling up hospital beds which is preventing other people from getting care they need for other things. Therefore, not getting your vaccine is negligent.