Leprosy—an ancient disease often associated with distant historical eras—might not be as far behind us as we think. While many of us assume it's a thing of the past, cases of leprosy have been popping up in unexpected places, including parts of the United States.
Surprisingly, this old foe is still causing concern worldwide, with thousands of new cases reported each year. How does leprosy spread, and why is it reappearing now? Click through the gallery to uncover the facts behind this misunderstood disease and what might be driving its resurgence in the US.