Monkeypox and Other Orthopoxviruses

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). As a result, the monkeypox Order issued by the Chief Medical Officer of Health under Section 77.6 on May 20, 2022, is no longer in effect

Amendments have been made to the following regulations under the HPPA:

  • Designation of Diseases (Ontario Regulation 135/18): to list monkeypox as a DOPHS and designate it as both a communicable and virulent disease; and
  • Reports (Regulation 569): to specify the additional information to be included in the reports required under sections 25 and 26 of the HPPA.


Monkeypox has been declared a public health emergency of international concern. Please see the statement from the WHO.



Additional Resources

Last Updated: 11/10/2022