The bacteria that causes the neglected tropical disease, Leprosy, Mycobacterium leprae, was once thought to be an obligate human pathogen.

However, they have been shown to be found in captive non-human primates, armadillos and most recently, red squirrels.

A recent study published in Nature showed that two populations of wild chimpanzees found in two West African countries contracted leprosy.

In this video, I'll look at leprosy, or Hansen's disease in humans, touch on leprosy in armadillos and red squirrels and close out with a little information about the wild chimpanzees.