Biography

Dr. Ann Burchell is Research Director at the Department of Family and Community Medicine and Scientist at the MAP Centre for Urban Health Solutions at St. Michael’s Hospital, Toronto. She is a Canada Research Chair in Sexually Transmitted Infection Prevention. She holds degrees in epidemiology from the University of Toronto (MSc) and McGill University (PhD) and has academic appointments as Associate Professor, Department of Family and Community Medicine, Faculty of Medicine, and Division of Epidemiology, 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). Its goal is to generate evidence for effective and practical strategies to prevent STIs and STI-related cancers in high-risk populations, including people living with or at risk for HIV.

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

Visit the Estimate Lab website.

Recent Publications

  1. Lazor, T, Sanches, M, Wardell, JD, Wang, W, Burchell, AN, Margolese, S et al.. Cannabis Use Trajectories Among People Living With HIV in the Decade Prior to Recreational Legalization in Ontario, Canada (2008-2017). AIDS Educ Prev. 2025;37 (2):142-159. doi: 10.1521/aeap.2025.37.2.142. PubMed PMID:40323672 .
  2. Mokaddam, M, Kronfli, N, Sheehan, NL, Gonzalez Reyes, A, Dubuc, D, Loutfy, M et al.. Antiretroviral therapy use, self-reported adherence, and viral suppression among women living with HIV in Canada. HIV Med. 2025; :. doi: 10.1111/hiv.70034. PubMed PMID:40317972 .
  3. Burchell, AN, Grennan, T. DoxyPEP open-label extension: well done is better than well said. Lancet Infect Dis. 2025; :. doi: 10.1016/S1473-3099(25)00146-X. PubMed PMID:40147464 .
  4. Moore, A, El-Zein, M, Burchell, AN, Tellier, PP, Coutlée, F, Franco, EL et al.. Genital, Oral, and Anal Type-specific Human Papillomavirus Concordance within Individuals and between Partners. Cancer Epidemiol Biomarkers Prev. 2025;34 (6):850-859. doi: 10.1158/1055-9965.EPI-24-1843. PubMed PMID:40146019 .
  5. Moore, A, El-Zein, M, Burchell, AN, Tellier, PP, Coutlée, F, Franco, EL et al.. Human papillomavirus incidence and transmission by vaccination status among heterosexual couples. J Clin Virol. 2025;177 :105779. doi: 10.1016/j.jcv.2025.105779. PubMed PMID:40107087 .
  6. Chawla, S, Kaida, A, Brouillette, MJ, Kleiner, B, Dubuc, D, Skerritt, L et al.. Impact of mental health service use on the HIV care cascade among women. HIV Med. 2025;26 (5):758-772. doi: 10.1111/hiv.70008. PubMed PMID:40040329 PubMed Central PMC12045145.
  7. McGarrity, MW, Lisk, R, MacPherson, P, Knox, D, Woodward, KS, Reinhart, J et al.. Hepatitis C Virus Seroprevalence, Incidence, and Screening Patterns in Ontario Preexposure Prophylaxis Users. Open Forum Infect Dis. 2025;12 (1):ofaf014. doi: 10.1093/ofid/ofaf014. PubMed PMID:39877400 PubMed Central PMC11773187.
  8. Ng, K, El-Zein, M, Wissing, MD, Burchell, AN, Tellier, PP, Coutlée, F et al.. Naturally Acquired Genotype-Specific HPV Seroreactivity and Subsequent HPV Detection Among Heterosexual Partners. J Med Virol. 2025;97 (1):e70163. doi: 10.1002/jmv.70163. PubMed PMID:39812113 PubMed Central PMC11733845.
  9. Lu, J, Vulesevic, B, Burchell, AN, Singer, J, Needham, J, Yang, Y et al.. Sex differences in COVID-19 vaccine confidence in people living with HIV in Canada. Vaccine X. 2024;21 :100566. doi: 10.1016/j.jvacx.2024.100566. PubMed PMID:39582795 PubMed Central PMC11585836.
  10. Chambers, C, Cooper, CL, Kroch, AE, Buchan, SA, Kendall, CE, Kwong, JC et al.. Coronavirus disease 2019 outcomes in a population-based cohort of people with HIV and a matched cohort of people without HIV during Omicron variant waves. AIDS. 2024;38 (10):1597-1600. doi: 10.1097/QAD.0000000000003922. PubMed PMID:39422634 PubMed Central PMC11239085.
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Affiliations & Other Activities

  • Associate Professor, Dalla Lana School of Public Health, University of Toronto,
  • Associate Professor, Department of Family and Community Medicine, University of Toronto