Wow, I haven't looked at this thread for a while! I didn't realise that people were still replying.
Since some posters had asked me what I based my "how vaccines work" thinking on, and I don't think I responded, it wasn't intended to be rude, I just forgot about the thread.
I can't be an expert in everything. I can't know everything. None of us can, that's why our diversified school system and market place are such vital aspects of our prosperous society.
There are people who study and think about and test and run experiments on these issues for lifetimes, and I am very thankful for that. When it comes to my child's health, I'm going to cautiously trust the science of medicine that makes sense to me.
To use birth for an example, I don't see pregnancy or birth as a medical situation in most cases. So, if my pregnancies are "normal" and my labour is going well, I want to deliver my babies at home, without drugs and with very minimal intervention from a midwife. This makes sense to me.
To use organic food as another example, I have seen what pesticides and herbicides do to bugs and weeds, they poison and retard their growth. Scientists and doctors (who understand microbiology better than I do) do say that they are harmful to pregnant women, foetuses and children. Scientists are also learning that organic food is more nutrient-dense. This makes sense to me, so, I try to eat organically for health reasons. I also eat organically for environmental reasons.
Knowing the very basics about the immune system, I took biology in high school and my sisters all have their degrees in science, the introduction of a pathogen to the bloodstream producing antibodies and immune system memory, makes sense to me.
Here are some links I found that explain the very basics better than I can:http://www.mayoclinic.com/health/vac...ORCESSL=false&http://makeashorterlink.com/?L1D25261Chttp://www.niaid.nih.gov/final/immun/immun.htm
It's true that WHEN the Small Pox vaccine was developed it wasn't understood HOW it worked - it just worked. We know more about the immune system now, and we know HOW the vaccine works, that's how other vaccines were developed.