Keep in mind that the degree of Amish varies quite a bit by group. Some drive, others don't. Some will ride in a motorized driven by someone else, others will only use a horse and buggy.

Some have electricity, some have telephones. Some even have cell phones. Some only use electricity as necessary -- example, refrigeration of food, but no overhead lights.

So, to say that Amish immunize or not really depends on how Amish they are.

Then there are the Mennonites.