We vaccinated DD at birth, just because I didnt question any of it. By the time her 6 months ones were due DP and I chatted and decided after much reading and questioning that we would either partially vax or possible not vax at all. We luckily havnt come up against any diseases so far, but I am scared about the possibilities. I guess thats what I have to live with though.
We dont have any siblings to worry about, although we do see DD's cousin who isnt vaccinated either quite regularly.