Federal · SOR/2015-44 was amendedIn force March 26, 2026 · detected June 12, 2026

Human Pathogens and Toxins Regulations updated: security added to public-risk tests, licence renewal tied to new Act requirements, and toxin thresholds replaced by ministerial registry

Human Pathogens and Toxins Regulations — under the HUMAN PATHOGENS AND TOXINS ACT

Plain-language summary · AI-assisted · not legal advice

Several practical changes have been made to the regulations governing facilities that handle human pathogens and toxins. The standard for assessing risk to the public now consistently reads 'health, safety or security' rather than just 'health or safety,' broadening the criteria used when issuing, renewing, suspending, or revoking licences and security clearances. Licence renewals are now explicitly conditional on meeting specific requirements set out in the Act, rather than being at the Minister's discretion alone. The fixed quantity table that determined when certain toxins were 'prescribed' (and therefore subject to stricter controls) has been removed; instead, toxins will be prescribed based on whether they appear in a ministerial registry and meet a risk threshold set by the Minister related to potential use as a biological weapon. A new obligation requires licence holders to notify the Minister without delay if a licensed pathogen is modified so that it poses a lower risk, replacing the previous regulatory exemption framework for risk-reduced pathogens. References to specific Act schedules for toxin lists have been updated to refer to 'the schedule to the Act.'

Who this affects: facilities licensed to handle human pathogens or toxins · biological safety officers · security clearance applicants and holders · licence holders conducting controlled activities · researchers working with prescribed toxins or Risk Group 3/4 pathogens

Source of truth: SOR/2015-44 on ontario.ca

Legislative text © King's Printer for Ontario. This page is not an official version of the law and is not legal advice. Verify against the official source before acting.

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