Diseases of Public Health Significance (Reportable Diseases)

As of June 16, 2022, monkeypox has been designated a Disease of Public Health Significance (DOPHS) as “Smallpox and other Orthopoxviruses including Monkeypox” under the Health Protection and Promotion Act (HPPA). Visit the designated webpage for more information


As of May 1st, 2018, “Reportable Diseases" are now referred to as "Diseases of Public Health Significance". Malaria and yellow fever are no longer reportable.

Download the full Diseases of Public Health Significance list.

Health care providers who suspect or have confirmation of the “Diseases of Public Health Significance”, or their “etiologic agents”, as per Ontario Reg 135/18 and amendments under the Health Protection and Promotion Act, must report them to the local Medical Officer of Health.

Report diseases listed below to:

  • Fax: (807) 625-4822 OR Phone: 625-8318 or toll-free at 1-888-294-6630, ext. 8318
  • For after hours, weekends, and holidays call the Thunder Bay Answering Service at (807) 624-1280

For more information on each of the diseases, click on the disease in the list below OR on the navigation bar to the left. Information on each disease will be reviewed annually as well as updated immediately as needed. Please use the contact information listed above should you have any questions about the information on each disease.


Report Immediately: 


Report By Next Working Day:


For Further Information

Call the Infectious Disease Program: (807) 625-5900

or toll-free: 1-888-294-6630


Last Updated: 10/01/2023