I honestly don't see what this has to do with vaccination? The title has a bias written right into it. I grew up in the South (U.S.) and it is culturally normal in some rural areas for kids to run around bare footed. Don't curl your lip at it, it's a normal thing for some boys. I did too, and I made of mistake of stepping on a rusty nail in a board once. I had to go to the doctor and get a tetanus shot. You get the shot after stepping on a nail. Not before it.