Tilder hit the nail on the head for me. I'm a scientist too, although in a somewhat different field, and find it frankly insulting that lay people would claim to have "properly" researched anything in my field without specialist knowledge and absolute heaps of time. So, people doing their own "independent" and "unbiased" 
research on the evidence for and against vaccinations in their spare time by doing a bit of googling (and quite possibly ending up on antivaxx websites - that obvs have their own agendas) or reading a couple of random (sometimes seemingly) scientific papers that come up high in a web search, are deluded fools.
Without in-depth knowledge of backgrounds and issues in immunology I would not dream of declaring that I know better than immunologists that work in this field for decades (and I'm sure the entrance criteria for medical schools, chemistry depts., etc. nclude "evilness" and "bribeability" (if there is such a word)). In fact my aunt and uncle both work for a drug company (fairly high ranking chemist and a biologist), and are definitely what you would call decent, normal people. Sure every field has its rotten apples, but science has a way of weeding them out (Wakefield, to give a well-known example)- eventually. The routine vaccines have been found to be safe enough (scientific research results are never absolutely black or white - but you they can find an acceptable shade of grey), and the alternatives are unthinkable (especially, because they are so easily avoidable), so I'll give my DS whatever's on the schedule. In fact he has his MMR booster next week
I know some people have a genuine reason (allergy, illness, etc.) for not immunizing their DC, but most really do not. We are all together in this society (like it or not), and parts of it - working together. If we have democratically agreed that we would like to get rid of some, possibly severe, diseases and that we should take care of the weak, e.g. cancer patients who cannot be protected, anyone without good reason really should immunize their DC. But you can't force some "free-thinking" individualists to think about anyone else. And I wouldn't even try, TBH. They already think they are cleverer than anyone else to have unveiled all these conspiracies.
Also, anyone who will want to come back with an argument about being a "sheep" blindly following current scientific advice, well, I guess I am, but so is everyone else. E.g. do you check whether the maintenance is up to date on a lift and really get stuck in learning about lift-building and maintenance literature before giving it a thorough once-over yourself before you (or your children) get in one? I didn't think so. But some people die in broken lifts. You have to have a degree of trust in others or move to a desert island somewhere.