There is a lot of reactionary "thoughts" posted in this thread. I am a parent of 3 kids. Only 1 of my kids has received any vaccinations. That child did not have all the recommended inoculations.
Am I a bad parent? Of course not. I am happy to answer questions and give my reasons for my choices if anyone desires.
All of you who worry, be at peace. My unvaxed kids pose absolutely no risk whatsoever to other (vaxed or unvaxed) kids. There are 2 types of immunity, innate and adaptive. Once your child is vaxed, they have adaptive immunity. My child with polio/rubella/mumps/etc. will have no effect on any other child kid because that kid is immune. If my child contracted mumps, I would keep them from general population so as not to expose that virus to kids without adaptive immunity.
Innate immunity is something with which we are all familiar. You contract a cold or flu one season and typically do not get the illness again. The viruses are still present on almost all things you touch everyday, but your body recognizes the pathogen and destroys it before an infection sets in. The tricky thing is that cold and flu viruses mutate often and form new strains which aren't recognized by our immune systems.
We have spoken with our pediatrician about our decision. It concerns her in some ways. In others ways, it doesn't. For instance, she is more concerned about rubella than polio in the US. Polio is essentially a zero risk unless we travel outside the US; say, on a mission trip to under developed countries.
If my daughter becomes sexually active, then she will get vaxed against HPV.
I do not have an issue with vaccines. The science is sound and the benefit to humanity are astounding. I take issue with the administration of the vax schedule and the sheer number of inoculations recommended.