The adaptive immune system is something everyone should learn more about. Too many folks giving their kids hand sanitizer when they need quite the opposite. Instead of giving your kid purrell you want the little one to touch everything and get dirty to develop and teach their own immune system to fight off pathogens at an early age.
Makes you wonder why so many kids are growing up with severe allergies.
Well maybe not everything but yes, let the children touch dirt!
Lol yeah, you know what i meant. Let them play outside in the dirt, play on the playground without Purrell-ing the hell out of their hands when they finish.
well you are not the only wondering this: http://onlinelibrary.wiley.com/doi/10.1111/j.1398-9995.2005.00854.x/abstract;jsessionid=DB509CE834D9FC3A463DAE98659F199F.f03t01
That's why todlers put everything in their mouth. They teach their immune system.
However I don't think vaccination in the way it is applied actually works well because it actually does not teach the immune system effectivly