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Nov 4th, 2025

New report on HIV diagnoses in Ontario in 2023 and key findings from the HIV Look Back Project

Oct 13th, 2023

New report on HIV Tests in Ontario 2021

The Ontario HIV Epidemiology and Surveillance Initiative (OHESI) is a collaboration involving the HIV and Hepatitis C Programs of the Ontario Ministry of Health (MOH), Public Health Ontario (PHO), the Public Health Agency of Canada (PHAC), and the Ontario HIV Treatment Network (OHTN) Applied Epidemiology Unit (AEU).

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