Armadillos have been the main cause of the spread of leprosy in the South-Eastern United States for decades. I don't know if the increase is due to more people walking barefoot, man increasingly encroaching on armadillo habitats, an increase in the armadillo population, the leprosy bacteria surviving longer as the weather changes, something else, or some combination. But if you live in an area with armadillos, you should wear shoes outdoors.