null Joseph Cox, MD, M.Sc.

Investigator, RI-MUHC

Infectious Diseases and Immunity in Global Health Program

Centre for Outcomes Research and Evaluation

Associate Professor, Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine and Health Sciences, McGill University

Department of Medicine, Division of Infectious Diseases, MUHC



public health • epidemiology • quantitative methods • HIV • HCV • HIV-HCV co-infection • substance use • men who have sex with men • vulnerable populations • prevention and care interventions

Research Focus

I do public health research on sexually transmitted and blood-borne infections (STBBI) such as HIV and HCV. Using quantitative methods, I aim to understand risks for STBBIs and poor health outcomes among vulnerable populations (men who have sex with men, people with substance use disorders, incarcerated persons). Using implementation science, I am also interested in evaluating STBBI-related prevention and care interventions.

Selected Publications

Click on Pubmed to see my current publications list

  • Cox J, Apelian H, Moodie EEM, Messier-Peet M, Hart TA, Grace D, Moore DM, Lachowsky NJ, Armstrong HL, Jollimore J, Skakoon-Sparling S, Rodrigues R, Tan DHS, Maheu-Giroux M, Noor SW, Lebouché B, Tremblay C, Olarewaju G, Lambert L, and the Engage Study Team. HIV pre-exposure prophylaxis (PrEP) use among Urban Canadian Gay, Bisexual and Other Men Who Have Sex with Men for whom PrEP is clinically recommended: Baseline Results from the Engage Cohort Study. CMAJ Open (in press).

  • Doyle CM, Maheu-Giroux M, Lambert G, Mishra S, Apelian H, Messier-Peet M, Otis J, Grace D, Hart TA, Moore DM, Lachowsky NJ, Cox J. Combination HIV Prevention Strategies Among Montreal Gay, Bisexual, and Other Men Who Have Sex with Men in the PrEP Era: A Latent Class Analysis. AIDS Behav. 2021 Jan;25(1):269-283. doi: 10.1007/s10461-020-02965-4. PMID: 32648063.

  • Lanièce Delaunay C, Cox J, Klein M, Lambert G, Grace D, Lachowsky NJ, Maheu-Giroux M. Trends in hepatitis C virus seroprevalence and associated risk factors among men who have sex with men in Montréal: results from three cross-sectional studies (2005, 2009, 2018). Sex Transm Infect. 2020 Jul 23;. doi: 10.1136/sextrans-2020-054464. [Epub ahead of print]. PMID: 32703845.

  • Yauck, M., Moodie, E. E., Apelian, H., Peet, M., Lambert, G., Grace, D., Lachowsky, N. J., Hart, T. A., & Cox, J. Sampling from networks: respondent-driven sampling. Epidemiologic Methods 2021; 10(1): 20200033. doi:

  • Cox J*, Linthwaite B*, Engler K, Lessard D, Lebouché B, Kronfli N. A type II implementation-effectiveness hybrid quasi-experimental pilot study of a clinical intervention to re-engage people living with HIV into care, 'Lost & Found': an implementation science protocol. Pilot Feasibility Stud. 2020;6:29. doi: 10.1186/s40814-020-0559-6. eCollection 2020. *Shared first author role. PMID: 32110432.