Cyclospora is a parasite composed of one cell, too small to be seen without a microscope. The organism was previously thought to be a blue-green alga or a large form of Cryptosporidium. Cyclospora cayetanensis is the only species of this organism found in humans.
The first known human cases of illness caused by Cyclospora infection

As of November 4, 2020, 370 confirmed cases of Cyclospora illness were reported in the following provinces and territories: British Columbia (1), Ontario (255), Quebec (105), New Brunswick (1), Newfoundland and Labrador (6), and Nunavut (2). Individuals became sick between mid-May and late August 2020. Ten individuals were hospitalized. No deaths were reported. Individuals who
CDC, public health and regulatory officials in 14 states, and the U.S. Food and Drug Administration investigated a multistate outbreak of Cyclospora infections.
According to the US FDA and CDC, 690 laboratory confirmed Cyclospora infections associated with this Fresh Express outbreak have been reported from 13 states: Georgia (1), Illinois (209), Iowa (206), Kansas (5), Massachusetts (1), Minnesota (86), Missouri (57), Nebraska (55), North Dakota (6), Ohio (4), Pennsylvania (2), South Dakota (13), and Wisconsin (45). The ill