Vaccines are part of the general problem of people just doing whatever they are told is good for them. The ultimate 'peer pressure' if you will.
IMO, Japan is one of the healthiest countries in the world and its people, some of the most intelligent. There is a reason way, way back in 1975 they changed the minimum age for a child to be vaccinated to 2 years old. Australia I think, makes the minimum age 4 or 5 years old.
Injecting a developing child younger than that, whose immune system is still in ultra early phases, full of chemicals and hazardous materials, IMO, is very likely to lead to future chronic illnesses and a weakened immune system and development.
Vaccines are not natural; the concept is great, but the execution (like most things run for profit) fail. If you ask me if I believe that you can build up immunity to poison, by ingesting a minor amount and building it up over time - absolutely! The concept of a vaccine is sound. However, the garbage it contains if any of you ever read up on such things is artificial and in some cases, can very likely cause side effects worst than the actual disease. Most ignorant people believe they are actually "just infecting you with the actual virus, in a minor amount". This is FALSE - they are injecting you with a simulated, chemical compound made to act like the actual virus. Big difference.
Think about people you know; don't you find people who are the most 'weak' and sick all the time, are the same people who watch every little thing they do? I know people at my office who always use hand sanitizer, for example, are the ones always sick.
Moral of the story: let your kids play and get dirty. Eating worms and dirt, not washing your hands 500 times a day, etc... didn't kill anyone the past few generations and it certainly didn't cause the plethora of conditions kids have these days.
