Trypanosoma evansi: the agent of Surra

Griffith Evans, a British Veterinarian discovered Trypanosoma evansi in 1880 in India. It was an important discovery since it opened up the study of other protozoan diseases of both man and animals.

Trypanosoma evansi is leaf-like in shape and has single flagellum attached to the body of organizm by an undulating membrane. The nucleus is elongated and subterminal kinetoplast.

Photo courtesy of Murdoch University