The "Oregon Trail" approach to health and immigration has been tested for 2+ million years. If you can cross on foot the Darien Gap, walk accross Central America in the summer heat, swim accross the finish line and are able to survive afterwards... you don't need vaccines.

The slaver mind, mobster city lover and Farmer Bill think crap. They are the greatest impedement to a healthy environment. I'm not a purist but things got completely out of hand.