Personally, I think vaccines skew the immune system, I no longer vaccinate at all.
The following would be an interesting excercise,
look up your own vaccine schedule, what did you get and when? What was the total amount of vaccines/doses you received before starting school.
Ask your parents about the vaccines they received, and then ask THEIR parents.
I didn't have to go far since I'm almost 50, my parents only got a smallpox vaccine before starting school, can you imagine! And they both lived until almost 80! I got about 9 doses total, dpt, smallpox and polio, that's it.
Christine