Smallpox, measles, mumps, tetanus...the old enemies of mankind. Scientists have been hard at work for centuries vanquishing these foes. Those of us in the developed world live safe from our oldest enemies, shielded by childhood immunizations. Well, not all of us. There are a brave few, the modern-day Don Quixote's if you will, who life on the knife edge of mortality. Eschewing the facts of science, they apply a mix of prayer, tinctures, and herbs...