6. The Jesuit Relations Disease and Medicine - 3 The differences in approach to the treatment of disease was apparent between the methods employed by the Jesuits versus the Huron Indians. The Huron's attributed disease to natural and supernatural causes, and used a Shaman to heal the sick of their ailments. The Jesuits were more concerned about salvation, and spent more time trying to convert and baptize the sick. Lacking immunities to “Old World” diseases such as smallpox, measles, and influenza, it is estimated that fifty percent of the native population died from contracting these diseases.