The OHTN Cohort Study

The OHTN Cohort Study (OCS) is a community-governed, scientifically rigorous research initiative, designed to improve the health and well-being of people living with HIV in Ontario by promoting and supporting scientific, community-based and policy-relevant research. The OCS is a multi-site research study that collects clinical and sociobehavioural data on a cohort of participants living with HIV over time. The mission of the OCS is to develop, support and sustain a unique research database and cohort, governed by people living with HIV in Ontario and used in partnership by scientists, community-based researchers and other stakeholders.

Principal Scientific Aims of the OCS

OCS Core Commitments

OCS Goals

News & Events

Happy 2014!

January 15, 2014

2013 was a busy year for the OCS. We have just updated our Fact Sheet, Publication, and Presentation pages. Be sure to check them out to see all of the exciting work we have been up to!

CHIWOS has launched!

October 15, 2013

The OCS is proud to announce that the Canadian HIV Women's Sexual and Reproductive Health Cohort Study (CHIWOS) launched on October 1st. Women living with HIV in Ontario are eligible to participate. For more information, visit the CHIWOS website.

OHTN Research Conference 2013

August 23, 2013

The OHTN Research Conference will be held this year in Toronto from November 17-19, 2013. The theme for this year's conference is, "Changing the Course of the HIV Prevention, Engagement and Treatment Cascade". Registration is now open, abstracts are due September 20, 2013. We hope to see you there!

New OCS Fact Sheet Online

July 19, 2013

Our latest fact sheet Patterns of Syphilis Testing in a Large Cohort of HIV Patients in Ontario, Canada, 2000-2009 examines the patterns of syphilis testing among OCS participants. The full article was recently published in the BMC Infectious Diseases journal.