- 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.
Hepatitis A
Hepatitis A is an acute liver infection caused by a virus. Infections occur from ingesting food or water contaminated by infected stool, and it can be easily passed from person to person. Most young children do not have symptoms or have an unrecognized infection. Most adults with hepatitis A have symptoms, including fatigue, abdominal pain, nausea and jaundice. Hepatitis A is often associated with travel to places where it is more common. A vaccine is available to prevent the disease.
Local Information
2025 Statistics
Incidence rate is the number of new cases of disease divided by the number of persons at risk for the disease during a particular time period.
Cases:
1*
Incidence rate per 100,000 in 2025: 0.7
*Includes confirmed cases in 2025.
Incidence rate per 100,000 of Hepatitis A by year
More Information about Hepatitis A
Report to the Health Unit immediately by fax (705-482-0670) and phone at 705-474-1400 or toll free at 1-800-563-2808, ext. 5229 if hepatitis A 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.
After hours, weekends, and holidays, call 705-474-1400 then press 0 to speak with the Answering Service. The on-call CDC Public Health Nurse will get back to you as soon as possible.
Should one go to childcare, school, camp, or work if they have hepatitis A?
Consult with the Health Unit. Exclude from high risk settings for 14 days after onset of symptoms, or 7 days after onset of jaundice, whichever comes earlier.
Follow the direction of your healthcare provider, public health case, or occupational health at your workplace.
Hepatitis A is preventable by vaccination. Check your vaccination records or call the Vaccine Preventable Diseases program at 705-474-1400 or toll free at 1-800-563-2808, ext. 5252 to book a vaccination appointment or to obtain additional information.
Healthcare Provider Information
Public Health Ontario: Hepatitis A
Public Health Ontario: Hepatitis A Post-Exposure Prophylaxis
Infectious Disease Protocol, Appendix 1: Hepatitis A
Public Health Agency of Canada - Hepatitis A for Health Professionals
Public Health Agency of Canada: Hepatitis A Vaccines - Canadian Immunization Guide
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: February 2025, by CDC