In many parts of the world, the species is a carrier of trypanosomid parasites.[7] Some of the reported parasites and diseases for which the stable fly might be a vector include Trypanosoma evansi (the agent of Surra), Trypanosoma brucei, brucellosis, equine infectious anemia, African horse sickness (AHS), and fowlpox.[8] [9] S. calcitrans is also reported to be a vector of Bacillus anthracis, the causative agent of anthrax.[9][10] [11]