A rare fungal infection is popping up in an unexpected part of the U.S. 

There are a number of things that could be happening, said Dr. Bruce Klein, a professor of pediatrics, medicine and medical microbiology and immunology at the University of Wisconsin-Madison. These pathogens can hitch a ride on shoes when people travel. New developments can stir soil — and the fungi they harbor — releasing spores into the air in places they weren’t thought to exist.