Cyclospora
Cyclospora cayetanensis:http://en.wikipedia.org/wiki/Cyclospora_cayetanensisCyclospora cayetanensis is a protozoan that infects humans through food or water contaminated by fecal matter. It infects the cells of the gastrointestinal tract and incubates for about a week before symptoms of diarrhea, discomfort, and low-grade fever appear. As the parasite produces its oocysts, the host cell ruptures and the oocysts are passed in the feces. It takes 1-2 weeks for the oocysts to mature and become infectious. Thoroughly washing produce before consumption can reduce the chance of infection, but preventing contact with human feces from the field to the table is the most effective preventive measure.

An outbreak of infections by Cyclospora occurred in the United States in July 2013. There were at least 400 cases in at least 16 states. The origin of the contaminated food in Iowa and Nebraska was traced to prepackaged salad produced by Taylor Farms de Mexico, a subsidiary of Taylor Farms of Salinas, California.
Excerpted from: Cyclospora cayetanensis, FDA names Mexican produce supplier in cyclospora outbreak