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Ontario’s Projected Patterns of Illness report reveals a striking forecast: by 2040, more than three million adults will be living with at least one major illness, with multimorbidity and care complexity rising sharply. These projections underscore the urgent need to shift from reactive care to proactive prevention and system transformation. This PHO Rounds will unpack the demographic and epidemiologic drivers of Ontario’s future health burden and examine implications for the province’s public health agenda. Participants will explore how population modelling can inform population health planning, guide investments in prevention, and support equitable approaches to preventing and managing chronic disease and aging populations. Using population health analytics as a foundation, the Rounds will explore how translating projections into planning can strengthen public health preparedness and system resilience.

Intended audience: Medical officers of health (MOH), associate medical officers of health (AMOH), public health clinicians, epidemiologists, public health professionals with interest in data and program planning, researchers, Ministry of Health professionals with interest in program planning.

By the end of this session, participants will be able to:

• Describe key findings from the Projected Patterns of Illness in Ontario report, including projected trends in major illness and multimorbidity through 2040.
• Explain demographic, behavioural, and system drivers underlying Ontario’s future health burden.
• Interpret the implications of these projections for public health policy, prevention, and health system planning.
• Apply insights from the report to identify actionable opportunities for public health standards, public health intervention, particularly in prevention and equity-oriented planning.

Dr. Laura C. Rosella, PhD., is Full Professor and Division Head of Epidemiology at the Dalla Lana School of Public Health, University of Toronto, where she holds a Tier 1 Canada Research Chair in Population Health Analytics. She founded the Population Health Analytics Lab, has authored more than 310 publications and currently serves as Editor-in-Chief of the Canadian Journal of Public Health. Dr. Rosella has received numerous honours, including Canada’s Top 40 Under 40, election to the Royal Society of Canada, the CIHR-IPPH Mid-Career Trailblazer Award, and in 2025 was inducted into as a Fellow of the Canadian Academy of Health Sciences.

The opinions expressed by speakers and moderators do not necessarily reflect the official policies or views of Public Health Ontario, nor does the mention of trade names, commercial practices, or organizations imply endorsement by Public Health Ontario.

Public Health Ontario Grand Rounds are a self-approved group learning activity (Section 1) as defined by the Maintenance of Certification Program of the Royal College of Physicians and Surgeons of Canada (RCPSC). In order to receive written documentation for Continuing Medical Education (CME) credits, please check “Yes” beside the question “Do you require CME credits?” on the registration form.

College of Family Physicians of Canada (CFPC) Affiliate Members may count RCPSC credits toward their Mainpro+ credit requirements. All other CFPC members may claim up to 50 Certified credits per cycle for participation in RCPSC MOC Section 1 accredited activities.

PHO Grand Rounds are also approved by the Council of Professional Experience for professional development hours (PDHs) for members of the Canadian Institute of Public Health Inspectors (CIPHI).

For more information or for a record of registration for other Continuing Education purposes, please contact events@oahpp.ca

Public Health Ontario is committed to complying with the Accessibility for Ontarians with Disabilities Act (AODA). If you require accommodations to participate in this event, please contact 647-260-7100 or events@oahpp.ca.