Well, as an immgrant and the daughter of a phd research scientist, my decisions were based on knowledge of the risks of each disease, coupled with knowledge of the importance of supporting natural immune function and development. My laundry list? Rotovirus was a joke to me (a joke that was later recalled...), as we are in an industrialized country with great medical support. Kids here don't die of diarrhea. I just made sure to wash my hands after poop. Hep B at birth or before school (unless is in family of course) is another joke. My son will not be sharing needles, having sex, or working with blood for a while. Mmr I am waiting until school age as I feel his risk is minimal at this point. Both my parents and their peers had measles, mumps, and rubella, and they are still here.
prevnar is too new for me,responsible for the superstrain resistant to antibiotcs, and pneumococcal bacteria needs a weaker immune system to become invasive. I don't feel a breastfed kid is at risk. None of us had Prevnar and here we are...The two that matter to
me are dtap and hib. Hib is very often invasive, regardless of health status of the host. And meningitis rates are high with it. On the who infant mortality pie chart, it is responsible for a whopping 80%. tetanus is crazy serious too. My uncle had it as a child and it was horrible. The people who say pertussis is just another childhood bug probably haven't had it or had milder versions. I had it when I was 3 and I still remember funking I was going to die. Not being able to breathe is horrible and terrifying, and I feel all kids are exposed to whooping cough at some point.
So that's where I am. I feel pretty good about it, but it hasn't been easy getting here. I think having my scientist mom say nay to the Heps and Prevnar with me helped tons. I am also very dedicated to extnded bfing, so if I wasn't doing that, I would have likely made other decisions.
Hope that helps and just remember that ultimately, it's about your family's comfort level. We cannot control everything. We don't own our children, we are just their temporary guardians and all we can do is our best.