As for vaccinations, my sister and I were fully vaccinated. She went to school to be an EMS (Emergency Medical Supporter with ambulance services). She needed to have blood work done to show what vaccinations she had received as a kid, and what ones she needed to be protected with. The blood tests showed she was not vaccinated for nothing. Thought at the time, she was fully vaccinated, and up to date with paper work documenting this. Why? did this happen? because she has a rare immune system, that apparently makes vaccines less effective or her body doesn't take them at all. Its rare apparently but does happen, and may happen more than we think. BUT we don't know, because how many people get tested to see what they are protected for when they think they are fully vaccinated?
Because of this, she has to be tested every 4 years, and re vaccinated for anything that may have "vanished" from her system. If she doesn't, she isn't allowed to do her job.
With that experience, my sister still chooses to vaccinate her kids too, however, she has little faith in how "vaccinations' work.