Orser, L., MacPherson, P., O’Byrne, P. and Saeed, M. Use of HIV Pre-Exposure Prophylaxis Among Men Who Have Sex with Men: Low Uptake and Retention Despite High-Risk Indications. AIDS Care. 37 (1): 141-150, 2025

O’Byrne, P., MacPherson, P. and Orser, L. An approach to sexually transmitted infection testing for men who have sex with men. Can Fam Phys: 70 (7-8): 449-455, 2024.

Kroch, K., O’Byrne, P., Orser, L., MacPherson. P., O’Brien, K., Light, L., Kang, R., Nyambi, A. Increased PrEP uptake and PrEP-RN coincide with decreased HIV diagnoses in men who have sex with men in Ottawa, Canada. CCDR. 49(6): 274-281, 2023

MacPherson, P., Razmjou, S. & O’Byrne, P. Falling Short of Clinical Recommendations: Low Uptake of the Human Papillomavirus Vaccine Among Gay, Bisexual, and Other Men Who Have Sex with Men in Ontario, Canada—Results from the Ontario Gay Men’s Health Survey. Sex Res Soc Policy. https://doi.org/10.1007/s13178-023-00921-0, 2023

Charest, M., Razmjou, S., O’Byrne, P. and MacPherson, P. Health Disparities Among Men Who Have Sex with Men: Looking Beyond Sexual Risk and the Gay, Urban Core. JOMH. 19(4):58-69, 2023.

All Other Publications

McGarrity, M., MacPherson, P., Li, A., Naccarato, M., Anderson, P. and Tan, D. Intracellular tenofovir-diphosphate concentrations in HIV pre-exposure prophylaxis users who underwent bariatric surgery. HIV Med: 26 (4): 643-649, 2025

McGarrity, M., Lisk, R., MacPherson, P., Knox, D., Woodward, K., Reinhart, J., MacLeod, J., Bogoch, I., Clatworthy, D., Biondi, M., Sullivan, S., Li, A., Burchell, A. and Tan, D. Hepatitis C Virus Seroprevalence, Incidence, and Screening Patterns in Ontario Pre-exposure Prophylaxis Users. Open Forum Infectious Dis: 15; 12 (1) eCollection Jan, 2025.

McGarrity, M., Lisk, R., MacPherson, P., Knox, D., Woodward, K., Reinhart, J., MacLeod, J., Bogoch, I., Clatworthy, D., Biondi, M., Sullivan, S., Li, A., Durrant, G., Schonbe, A., Ongoiba, F., Raboud, J., Burchell, A., Tan, D.. HIV pre-exposure prophylaxis and opportunities for vaccination against hepatitis A virus, hepatitis B virus and human papillomavirus: an analysis of the Ontario PrEP cohort study. Sex Transm Infect. 100(5):271-280, 2024.

Pico-Espinosa, O.J., Hull, M., Gaspar, M., Lachowsky, N., Grace, D., Truong, R., Mohammed, S., MacPherson, P., Woodward, K., Tan, D.H.S. Disjuncture between self-perceived and clinically assessed risk of HIV among gay, bisexual, and other men who have sex with men in Ontario and British Columbia, Canada. BMC Public Health.  23(1):1133, 2023

Vesnaver, E., Butler-Foster, T., Goldman, M., Gibson, E., Palumbo, A., Lapierre, D., Hill, NE., MacDonagh, R., Rubini, K,A,, Bridel, W., Miguel, G., Rosser, A., MacPherson, P., Randall, T., Osbourne-Sorrell, W., O'Brien, S.F., Otis, J., Greaves, M., Al-Bakri, T.B., Germain, M., Orvis, S., Clapperton, A.T., Reid, M., Labrecque, M., Devine, D., Presseau, J. Improved access yet inequitable experience: gay, bisexual and other men who have sex with men's views of more inclusive criteria for source plasma donation. BMC Public Health. 23(1):768, 2023.

Vesnaver, E., Gibson, E., Goldman, M., Butler-Foster, T., Hill, N. E., Lapierre, D., MacDonagh, R. Rubini, K, Miguel, G., Rosser, A., MacPherson, P., Palumbo, A., Randall, T., Osbourne-Sorrell, W., O’Brien, S. F., Otis, J., Greaves, M., Al-Bakri, T. B., Reid, M., Labrecque, L., Germain, M., Orvis, S., Clapperton, A.T., Devine, D., & Presseau, J. Navigating imperfect policies to donate plasma: Survey on plasma donation and a pilot plasma donation program among men who have sex with men in Canada. Transfusion. 63(6):1172-1183, 2023

Pico-Espinosa, O., Hull, M., MacPherson, P., Grace, D., Lachowsky, N., Gaspar, M., Mohammed, S., Truong, R. and Tan, D. Reasons for not using HIV PrEP and strategies that may facilitate HIV PrEP uptake in Ontario and British Columbia among gay, bisexual and other men who have sex with men. CMAJ Open. 11(3):E560-E-568, 2023.