- Case counts (2016-2025), population estimates (2016-2023), & population projections (2024-2025): Public Health Ontario.
- Query: Case counts of reportable diseases by public health unit and year. Toronto, ON: Ontario Agency for Health Protection and Promotion; extracted on March 9, 2026.
Cyclospora
Cyclosporiasis is an intestinal illness caused by the microscopic parasite, Cyclospora cayetanensis. The parasite is found in countries with tropical and sub-tropical climates and is not endemic in Ontario. Ontario cases are either travel-related or associated with imported food. Past outbreaks have been linked to imported produce and herbs. Cyclosporiasis causes watery diarrhea that can be treated with antibiotics.
Local Information
2025 Statistics
Incidence rate is the number of new cases of a disease divided by the number of persons at risk for the disease during a particular time period.
Cases:
0*
Incidence rate per 100,000 in 2025: 0
*Includes confirmed cases in 2025.
Incidence rate per 100,000 of cyclosporiasis by year
More information about cyclosporiasis
Public Health Agency of Canada
Report to the Health Unit within one business day by fax (705-482-0670) or phone at 705-474-1400 or toll free at 1-800-563-2808, ext. 5229 if cyclosporiasis is suspected or confirmed as per Ontario Regulation 135/18 and amendments under the Health Protection and Promotion Act, R.S.O., c.H.7.
Should one go to childcare, school, or work if they have cyclosporiasis?
Exclude symptomatic food handlers, healthcare providers, and childcare staff/attendees until symptom free for 24 hours, OR symptom-free for 48 hours after completing the course of anti-diarrheal medication.
Follow the direction of your healthcare provider, public health case manager, or occupational health at your workplace.
Healthcare provider information
Public Health Agency of Canada
Infection prevention and control
Routine practices are recommended for hospitalized cases.
Ministry of Health - Ontario Public Health Standards
Public Health Agency of Canada
Merck Manual - Professional Version
Contact our Communicable Disease Control (CDC) program at 705-474-1400 or toll free at 1-800-563-2808, ext. 5229, or by email to cdc@healthunit.ca for more information.
Last updated: June 2026, by CDC