Mohammad Karamouzian, University of Toronto

Research

Substance Use Health Equity Homeless Youth Prospective Cohort Studies Substance Use Disorders Epidemiology Hiv Hiv Prevention

Latest papers

Retraction Note: Comparison of safety and effectiveness of antiretroviral therapy regimens among pregnant women living with HIV at preconception or during pregnancy: a systematic review and network meta-analysis of randomized trials
BMC Infectious Diseases · 2026
Prescribed pharmaceutical alternatives initiative coinciding with reductions in unregulated street opioid use among young people who use drugs: An interrupted time series analysis.
Addiction (Abingdon, England) · 2026
Unmet needs for opioid agonist therapy in Iranian prisons: a cross-sectional study.
International journal of prison health · 2026 · senior author

All 71 publications

Latest funding

Recuperative Environment for Safer Transitions after hospitalization for people experiencing HOMElessness (REST-HOME) Trial
CIHR · 2026 · Co-investigator
$742,051
Advancing HIV, STBBI Health Equity through Substance Use Health: A Pan-Canadian Research, Knowledge Translation and Capacity Building Network
CIHR · 2025 · Co-investigator
$992,626
Advancing HIV, STBBI Health Equity through Substance Use Health: A Pan-Canadian Research, Knowledge Translation and Capacity Building Network
CIHR · 2025 · Co-investigator
$1,000,000

All 7 grants and awards

71 publications.

01

Retraction Note: Comparison of safety and effectiveness of antiretroviral therapy regimens among pregnant women living with HIV at preconception or during pregnancy: a systematic review and network meta-analysis of randomized trials

Mehrabi F, Karamouzian M, Farhoudi B, Langeroodi SMF, Mehmandoost S, Abbaszadeh S, Motaghi S, Mirzazadeh A, Sadeghirad B, Sharifi H

BMC Infectious Diseases2026

DOI: 10.1186/s12879-026-13152-6

02

Prescribed pharmaceutical alternatives initiative coinciding with reductions in unregulated street opioid use among young people who use drugs: An interrupted time series analysis.

McAdam E, Karamouzian M, Milloy MJ, Verdicchio C, Sayre EC, Hayashi K, Kerr T, DeBeck K

Addiction (Abingdon, England)2026

DOI: 10.1111/add.70573 PMID: 42586551

03

Unmet needs for opioid agonist therapy in Iranian prisons: a cross-sectional study.

Rafiee M, Mehmandoost S, Sadidi N, Khezri M, Haghdoost AA, Tavakoli F, Amiri E, Sharifi H, Karamouzian M

International journal of prison health2026Senior author

DOI: 10.1108/ijoph-10-2025-0087 PMID: 42310887

04

The peace pill: an overdue prescription for the Eastern Mediterranean Region.

Karamouzian M, McKee M, Yaghmaei N, Blanchet K, Majrooh W, Zeinali Z, Lami F, Barakat S, Nuwayhid I, Siddiqi S

BMJ (Clinical research ed.)2026First author

DOI: 10.1136/bmj-2026-479016 PMID: 42259584

05

A continuum of disconnection: the impacts of safer supply program closures on continuity of care, transition, and total loss of service access.

Ali F, Sprakes A, Mende-Gibson J, Karamouzian M, Kolla G, Shaw A, Celinski A, Kaminski N, Chandresekera U, Rehm J

Harm reduction journal2026

DOI: 10.1186/s12954-026-01469-z PMID: 42106810

06

The Rise and Fall of Safer Supply Programs in Canada.

Karamouzian M, Werb D

JAMA health forum2026First author

DOI: 10.1001/jamahealthforum.2026.0976 PMID: 42101852

07

Supervised consumption service use and high-frequency public injecting among people who inject drugs in Toronto: A cross-sectional analysis (2018-2020).

Nafeh F, Greenwald ZR, Bonn M, Eeuwes J, Atkinson K, Strathdee SA, Karamouzian M, Werb D

The International journal on drug policy2026

DOI: 10.1016/j.drugpo.2026.105473 PMID: 42636772

08

Humanity first requires accountability first.

Karamouzian M

The Lancet regional health. Europe2026First author

DOI: 10.1016/j.lanepe.2026.101682 PMID: 42027217

09

Beyond encampments: an evidence-based path to solving Canada's homelessness crisis.

Karamouzian M, Hwang SW, Werb D

Lancet regional health. Americas2026First author

DOI: 10.1016/j.lana.2025.101362 PMID: 41551298

10

HIV Prevalence and Related Factors among Female Sex Workers in Iran: Findings of a Nationwide Bio-Behavioral Survey, 2023-2024.

Tavakoli F, Mehmandoost S, Bazrafshani MS, Rafiei M, Nasiri N, Mirzaei H, Tajlili A, Mahzari K, Haghdoost AA, Karamouzian M, Sharifi H

AIDS and behavior2026

DOI: 10.1007/s10461-025-04922-5 PMID: 41100017

Recuperative Environment for Safer Transitions after hospitalization for people experiencing HOMElessness (REST-HOME) Trial

Co-investigatorCIHR2026Project Grant

Principal investigators: Hwang, Stephen W; Colacci, Michael

Keywords: Health Care Access; Health Care Utilization; Health Outcomes; Health Status; People Experiencing Homelessness (Peh); Randomized Controlled Trial; Recuperative Care; Social-Economic Determinants Of Health

$742,051

Advancing HIV, STBBI Health Equity through Substance Use Health: A Pan-Canadian Research, Knowledge Translation and Capacity Building Network

Co-investigatorCIHR2025Team Grant: HIV/AIDS and STBBI Community-Based Research - People who use drugs

Principal investigators: Strike, Carol J; Johnson, Colin H; Penn, Rebecca; Guta, Adrian

Keywords: Capacity Building; Community Based Research; Hiv/Stbbi; Knowledge Transfer; Policy Analysis; Prevention; Substance Use

$992,626

Advancing HIV, STBBI Health Equity through Substance Use Health: A Pan-Canadian Research, Knowledge Translation and Capacity Building Network

Co-investigatorCIHR2025Team Grant: HIV/AIDS and STBBI Community-Based Research - Supplementary Funding

Principal investigators: Strike, Carol J; Johnson, Colin H; Penn, Rebecca; Guta, Adrian

Keywords: Capacity Building; Community Based Research; Hiv/Stbbi; Knowledge Transfer; Policy Analysis; Prevention; Substance Use

$1,000,000

The Toronto Youth Equity and Substances (TYES) Study: Investigating Substance Use-Related Social and Clinical Outcomes among Youth Experiencing Homelessness

Nominated PICIHR2025Project Grant

Principal investigators: Karamouzian, Mohammad; Werb, Daniel M

Keywords: Health Equity; Homeless Youth; Prospective Cohort Studies; Substance Use Disorders

$1,591,200

CIHR-IPPH Trailblazer Award 2025 - Early Career

Nominated PICIHR2025CIHR-IPPH Trailblazer Award

Principal investigators: Karamouzian, Mohammad

Keywords: Epidemiology; Health Equity; Hiv; Hiv Prevention; Marginalized Populations; Overdose Prevention; Substance Use

$12,500

Examining the impact of unregulated fentanyl adulterated with non-medical benzodiazepines and xylazine on the health of people who use drugs: A sequential explanatory mixed methods study

Co-investigatorCIHR2024Project Grant

Principal investigators: Strike, Carol J; Guta, Adrian

Keywords: Exploratory Study; Health Care; Mixed Methods; Non-Medical Benzodiazepines; Non-Medical Xylazine; Overdose; People Who Use Drugs; Surveys; Unregulated Drugs; Urine Drug Screening

$535,501

Initiating Meaningful Partnerships for Advocacy and Collaborative Training: The IMPACT initiative

Nominated PICIHR2023Planning and Dissemination Grant - Institute Community Support

Principal investigators: Karamouzian, Mohammad

Keywords: Overdose Epidemic; Patient-Oriented Research; People With Lived And Living Experience; Substance Use

$20,000

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

Kanna Hayashi and Kanna Hayashi: 196 shared papers
Thomas Kerr and Kanna Hayashi: 167 shared papers
Thomas Kerr and Kanna Hayashi: 106 shared papers
Thomas Kerr and Kora DeBeck: 91 shared papers
Kora DeBeck and Kanna Hayashi: 90 shared papers
Kora DeBeck and Kanna Hayashi: 85 shared papers
Thomas Kerr and Jade Boyd: 33 shared papers
Carol Strike and Adrian Guta: 31 shared papers
Thomas Kerr and Lindsey Richardson: 26 shared papers
Lindsey Richardson and Kanna Hayashi: 20 shared papers
Lindsey Richardson and Kanna Hayashi: 18 shared papers
Thomas Kerr and Mohammad Karamouzian: 13 shared papers
Kanna Hayashi and Jade Boyd: 13 shared papers
Kanna Hayashi and Jade Boyd: 13 shared papers
Tara Gomes and Gillian Kolla: 13 shared papers
Thomas Kerr and Andrew Ivsins: 11 shared papers
Kora DeBeck and Hudson Reddon: 11 shared papers
Carol Strike and Gillian Kolla: 11 shared papers
Kanna Hayashi and Hudson Reddon: 11 shared papers
Kanna Hayashi and Hudson Reddon: 11 shared papers
Gillian Kolla and Gillian Kolla: 10 shared papers
Andrew Ivsins and Geoff Bardwell: 9 shared papers
Carol Strike and Elaine Hyshka: 8 shared papers
Thomas Kerr and Geoff Bardwell: 7 shared papers
Carol Strike and Tara Gomes: 7 shared papers
Carol Strike and Gillian Kolla: 7 shared papers
Kanna Hayashi and Mohammad Karamouzian: 7 shared papers
Adrian Guta and Gillian Kolla: 7 shared papers
Adrian Guta and Gillian Kolla: 7 shared papers
Jade Boyd and Andrew Ivsins: 7 shared papers
Thomas Kerr and Mohammad Karamouzian: 6 shared papers
Bernadette Pauly and Karen Urbanoski: 6 shared papers
Tara Gomes and Gillian Kolla: 6 shared papers
Mohammad Karamouzian and Mohammad Karamouzian: 6 shared papers
Carol Strike and Mohammad Karamouzian: 5 shared papers
Kanna Hayashi and Mohammad Karamouzian: 5 shared papers
Karen Urbanoski and Gillian Kolla: 5 shared papers
Karen Urbanoski and Gillian Kolla: 5 shared papers
Bernadette Pauly and Carol Strike: 4 shared papers
Bernadette Pauly and Elaine Hyshka: 4 shared papers
Karen Urbanoski and Elaine Hyshka: 4 shared papers
Elaine Hyshka and Farihah Ali: 4 shared papers
Mohammad Karamouzian and Gillian Kolla: 4 shared papers
Behnam Sadeghirad and Mohammad Karamouzian: 3 shared papers
Carol Strike and Geoff Bardwell: 3 shared papers
Elaine Hyshka and Mohammad Karamouzian: 3 shared papers
Kanna Hayashi and Mohammad Karamouzian: 3 shared papers
Farihah Ali and Geoff Bardwell: 3 shared papers
Behnam Sadeghirad and Mohammad Karamouzian: 2 shared papers
Didier Jutras-Aswad and Lindsey Richardson: 2 shared papers
Kora DeBeck and Mohammad Karamouzian: 2 shared papers
Bernadette Pauly and Mohammad Karamouzian: 2 shared papers
Carol Strike and Farihah Ali: 2 shared papers
Lindsey Richardson and Mohammad Karamouzian: 2 shared papers
Karen Urbanoski and Mohammad Karamouzian: 2 shared papers
Adrian Guta and Mohammad Karamouzian: 2 shared papers
Tara Gomes and Mohammad Karamouzian: 2 shared papers
Jade Boyd and Mohammad Karamouzian: 2 shared papers
Farihah Ali and Mohammad Karamouzian: 2 shared papers
Behnam Sadeghirad and Jessica Moe: 1 shared paper
Didier Jutras-Aswad and Elaine Hyshka: 1 shared paper
Didier Jutras-Aswad and Igor Yakovenko: 1 shared paper
Didier Jutras-Aswad and Mohammad Karamouzian: 1 shared paper
Bernadette Pauly and David Tu: 1 shared paper
Carol Strike and David Tu: 1 shared paper
David Tu and Karen Urbanoski: 1 shared paper
David Tu and Mohammad Karamouzian: 1 shared paper
Elaine Hyshka and Igor Yakovenko: 1 shared paper
Jessica Moe and Mohammad Karamouzian: 1 shared paper
Igor Yakovenko and Mohammad Karamouzian: 1 shared paper
Hudson Reddon and Mohammad Karamouzian: 1 shared paper
Andrew Ivsins and Mohammad Karamouzian: 1 shared paper
Mohammad Karamouzian and Geoff Bardwell: 1 shared paper
Mohammad Karamouzian and Gillian Kolla: 1 shared paper

Medicine
Canadian Institute for Substance Use Research
Social & Behavioural Health Sciences Division
Division of Social and Behavioural Health Sciences
Anesthesia
School of Social Work
Sociology
Other

1 shared papers, latest 2025

Srinivas Murthy

Faculty

1 shared papers, latest 2024

Write to this professor

A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mentionMention their CIHR grant from 2025

Subject: Prospective PhD student: Substance Use Dear Professor Karamouzian, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Retraction Note: Comparison of safety and effectiveness of antiretroviral therapy regimens among pregnant women living with HIV at preconception or during pregnancy: a systematic review and network meta-analysis of randomized trials" (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your CIHR-funded project "The Toronto Youth Equity and Substances (TYES) Study: Investigating Substance Use-Related Social and Clinical Outcomes among Youth Experiencing Homelessness" (2025), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]