For a month now people in New York have been testing positive for parasitic infections that health officials say appear to have ... Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis, according to the U.S. ... New York officials did not provide any specific information on the confirmed patients except to say that their illnesses ... For a month now people in New York have been testing positive for parasitic infections that health officials say appear to have ...