Cyclospora cayetanensis was discovered in 1980. It emerged as the cause of diarrheal outbreaks in the 1990s.
Epidemiologic and traceback data from Iowa and Nebraska indicate that a salad mix supplied to restaurants in those states by Taylor Farms de Mexico, S. de R.L. de C.V., a processor of foodservice salads, is associated with cases of cyclosporiasis in those states. Whether this salad mix is associated with cases in the outbreak in other states is still being investigated.