What is OHESI?

 Download the OHESI fact sheet in PDF format.
 View the video presentation.

OHESI is a new provincial collaboration between agencies involved with HIV epidemiology and surveillance in Ontario.

The overall purpose of this new initiative is to contribute to achieving the vision, mission and goals of Ontario’s HIV/AIDS Strategy to 2025: Changing the course of the HIV prevention, engagement, and care cascade. In support of the strategy, the objectives of the OHESI are to understand, monitor and translate the epidemiology of HIV in the province of Ontario, in order to:


Understand the challenges along the prevention, engagement and care cascade.


Inform local and provincial policies and programs such that services can adjust to meet changing needs.


Provide the information needed to develop, implement and evaluate strategies and interventions, and integrate evidence into practice.


Monitor the provincial progress in achieving the goals of the strategy.