Ann Burchell


Scientist, Li Ka Shing Knowledge Institute


Ann Burchell is an epidemiologist and Scientist with the Department of Family and Community Medicine and Li Ka Shing Knowledge Institute at St. Michael’s Hospital, Toronto. She holds degrees in epidemiology from the University of Toronto (MSc) and McGill University (PhD) and has academic appointments as Assistant Professor, Dalla Lana School of Public Health, University of Toronto; Adjunct Professor, Division of Cancer Epidemiology, McGill University; and Adjunct Scientist, Institute for Clinical Evaluative Medicine, Toronto.

Dr. Burchell’s research program focuses on the epidemiology of human immunodeficiency virus (HIV) infection, human papillomavirus (HPV), syphilis, and other sexually transmitted infections (STIs). She has a particular interest in generating evidence for effective, efficient, and practical primary and secondary prevention strategies for control of STIs and STI-related cancers in marginalized communities.

She has extensive methodological experience in the design and implementation of: observational longitudinal studies with primary and secondary data; sexual behavior and health-access questionnaires; natural history studies using laboratory markers of infection; and, most recently, pragmatic randomized trials for HPV prevention and improved screening for syphilis, cervical and anal cancer. She currently holds a New Investigator award from the Canadian Institutes of Health Research.

Recent Publications

  1. Wang, L, Moqueet, N, Lambert, G, Grace, D, Rodrigues, R, Cox, J et al.. Population-Level Sexual Mixing By HIV Status and Pre-exposure Prophylaxis Use Among Men Who Have Sex with Men in Montreal, Canada: Implications for HIV Prevention. Am. J. Epidemiol. 2019; :. doi: 10.1093/aje/kwz231. PubMed PMID:31612213 .
  2. Wissing, MD, Burchell, AN, El-Zein, M, Tellier, PP, Coutlée, F, Franco, EL et al.. Vaccination of Young Women Decreases Human Papillomavirus Transmission in Heterosexual Couples: Findings from the HITCH Cohort Study. Cancer Epidemiol. Biomarkers Prev. 2019; :. doi: 10.1158/1055-9965.EPI-19-0618. PubMed PMID:31488413 .
  3. Burchell, AN, Lisk, R, Yeung, A, Rana, J, Bacon, J, Brunetta, J et al.. Community-Directed Bacterial Sexually Transmitted Infection Testing Interventions Among Men Who Have Sex With Men: Protocol for an E-Delphi Study in Toronto, Canada. JMIR Res Protoc. 2019;8 (7):e13801. doi: 10.2196/13801. PubMed PMID:31274111 PubMed Central PMC6637728.
  4. Wissing, MD, Louvanto, K, Comète, E, Burchell, AN, El-Zein, M, Rodrigues, A et al.. Human Papillomavirus Viral Load and Transmission in Young, Recently Formed Heterosexual Couples. J. Infect. Dis. 2019;220 (7):1152-1161. doi: 10.1093/infdis/jiz238. PubMed PMID:31063542 PubMed Central PMC6736425.
  5. de Pokomandy, A, Burchell, AN, Salters, K, Ding, E, O'Brien, N, Bakombo, DM et al.. Cervical cancer screening among women living with HIV: a cross-sectional study using the baseline questionnaire data from the Canadian HIV Women's Sexual and Reproductive Health Cohort Study (CHIWOS). CMAJ Open. ;7 (2):E217-E226. doi: 10.9778/cmajo.20180151. PubMed PMID:30979726 PubMed Central PMC6461544.
  6. Younger, J, Raboud, J, Szadkowski, L, Harrigan, R, Walmsley, S, Bayoumi, AM et al.. Tenofovir and emtricitabine resistance among antiretroviral-naive patients in the Canadian Observational Cohort Collaboration: implications for PrEP. Antivir. Ther. (Lond.). 2019;24 (3):211-220. doi: 10.3851/IMP3302. PubMed PMID:30873953 .
  7. Malagón, T, Louvanto, K, Wissing, M, Burchell, AN, Tellier, PP, El-Zein, M et al.. Hand-to-genital and genital-to-genital transmission of human papillomaviruses between male and female sexual partners (HITCH): a prospective cohort study. Lancet Infect Dis. 2019;19 (3):317-326. doi: 10.1016/S1473-3099(18)30655-8. PubMed PMID:30745276 PubMed Central PMC6404546.
  8. Grewal, R, Allen, VG, Bayoumi, AM, Gardner, SL, Kaul, R, Mazzulli, T et al.. Brief Report: Syphilis Coinfection Is Not Associated With an Increased Risk of Virologic Failure Among HIV-Positive Men Who Have Sex With Men on Antiretroviral Therapy. J. Acquir. Immune Defic. Syndr. 2019;80 (5):585-589. doi: 10.1097/QAI.0000000000001962. PubMed PMID:30730358 .
  9. El-Zein, M, Coutlée, F, Tellier, PP, Roger, M, Franco, EL, Burchell, AN et al.. Human Papillomavirus Infection and Transmission Among Couples Through Heterosexual Activity (HITCH) Cohort Study: Protocol Describing Design, Methods, and Research Goals. JMIR Res Protoc. 2019;8 (1):e11284. doi: 10.2196/11284. PubMed PMID:30650383 PubMed Central PMC6352011.
  10. Burchell, AN, Raboud, J, Donelle, J, Loutfy, MR, Rourke, SB, Rogers, T et al.. Cause-specific mortality among HIV-infected people in Ontario, 1995-2014: a population-based retrospective cohort study. CMAJ Open. ;7 (1):E1-E7. doi: 10.9778/cmajo.20180159. PubMed PMID:30622108 PubMed Central PMC6350837.
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Affiliations & Other Activities

  • Assistant Professor, University of Toronto, Dalla Lana School of Public Health