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.

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Recent Publications

  1. Mbuagbaw, L, Logie, CH, Thabane, L, Smaill, F, Smieja, M, Burchell, AN et al.. The impact of routine HIV drug resistance testing in Ontario: A controlled interrupted time series study. PLoS One. 2021;16 (4):e0246766. doi: 10.1371/journal.pone.0246766. PubMed PMID:33798201 PubMed Central PMC8018617.
  2. Malagón, T, MacCosham, A, Burchell, AN, El-Zein, M, Tellier, PP, Coutlée, F et al.. Sex- and Type-specific Genital Human Papillomavirus Transmission Rates Between Heterosexual Partners: A Bayesian Reanalysis of the HITCH Cohort. Epidemiology. 2021;32 (3):368-377. doi: 10.1097/EDE.0000000000001324. PubMed PMID:33625158 PubMed Central PMC8012224.
  3. Wang, L, Moqueet, N, Simkin, A, Knight, J, Ma, H, Lachowsky, NJ et al.. Mathematical modelling of the influence of serosorting on the population-level HIV transmission impact of pre-exposure prophylaxis. AIDS. 2021;35 (7):1113-1125. doi: 10.1097/QAD.0000000000002826. PubMed PMID:33534205 .
  4. El-Zein, M, Khosrow-Khavar, F, Burchell, AN, Tellier, PP, Eintracht, S, McNamara, E et al.. Association of serum 25-hydroxyvitamin D with prevalence, incidence, and clearance of vaginal HPV infection in young women. J Infect Dis. 2020; :. doi: 10.1093/infdis/jiaa758. PubMed PMID:33306088 .
  5. Zhabokritsky, A, Szadkowski, L, Cooper, C, Loutfy, M, Wong, A, McClean, A et al.. Increased CD4 : CD8 ratio normalization with implementation of current ART management guidelines. J Antimicrob Chemother. 2021;76 (3):729-737. doi: 10.1093/jac/dkaa484. PubMed PMID:33249444 PubMed Central PMC7879150.
  6. Grewal, R, Grennan, T, Gillis, JL, Ogilvie, G, Gaspar, M, Grace, D et al.. Low human papillomavirus (HPV) vaccine uptake among men living with human immunodeficiency virus (HIV): Cross-sectional findings from a clinical cohort. Prev Med. 2021;143 :106329. doi: 10.1016/j.ypmed.2020.106329. PubMed PMID:33221269 .
  7. Gillis, JL, Grennan, T, Grewal, R, Ogilvie, G, Gaspar, M, Grace, D et al.. Low human papillomavirus (HPV) knowledge related to low risk perception among men living with HIV: Implications for HPV-associated disease prevention. Prev Med. 2020;141 :106274. doi: 10.1016/j.ypmed.2020.106274. PubMed PMID:33022315 .
  8. Rana, J, Guiang, CB, Lisk, R, Shahin, R, Brunetta, J, Mitterni, L et al.. Survey of Health Care Providers' Practices and Opinions Regarding Bacterial Sexually Transmitted Infection Testing Among Gay, Bisexual, and Other Men Who Have Sex With Men. Sex Transm Dis. 2021;48 (2):94-102. doi: 10.1097/OLQ.0000000000001287. PubMed PMID:33003183 .
  9. Ivers, NM, Taljaard, M, Giannakeas, V, Reis, C, Mulhall, CL, Lam, JMC et al.. Effectiveness of confidential reports to physicians on their prescribing of antipsychotic medications in nursing homes. Implement Sci Commun. 2020;1 :30. doi: 10.1186/s43058-020-00013-9. PubMed PMID:32885189 PubMed Central PMC7427908.
  10. MacCosham, A, El-Zein, M, Burchell, AN, Tellier, PP, Coutlée, F, Franco, EL et al.. Transmission reduction and prevention with HPV vaccination (TRAP-HPV) study protocol: a randomised controlled trial of the efficacy of HPV vaccination in preventing transmission of HPV infection in heterosexual couples. BMJ Open. 2020;10 (8):e039383. doi: 10.1136/bmjopen-2020-039383. PubMed PMID:32788190 PubMed Central PMC7422656.
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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