TERRE HAUTE, IND. (WAWV/WTWO) - The Illinois Department of Public Health sent a memorandum to Terre Haute EMS about increases in Xylazine-related overdose deaths in Illinois. Associate Professor for Equine Studies at Saint Mary-of-the-Woods Edward Ferguson said Xylazine is used to make horses unaware of their surroundings to prep for grooming or medical procedures. Ferguson [.]