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Stefanie Vaccher

Statistician/Epidemiologist, UNSW Sydney

Stefanie is a statistician and epidemiologist. Her work as a sexual health researcher has focused on HIV pre-exposure prophylaxis (PrEP), drug use, and behavioural practices. She has a broader interest in public health, including HIV prevention strategies, sexually transmissible infections, and infectious disease epidemiology. Stefanie has a PhD in Public Health/Epidemiology and First Class Honours in Clinical Pharmacology from UNSW Sydney.


  • 2018–present
    Statistician/Epidemiologist, Kirby Institute


  • 2019 
    UNSW Australia, PhD
  • 2014 
    UNSW Australia, BSc. (Adv), Hons I


  • 2020
    Prevalence, frequency, and motivations for alkyl nitrite use among gay, bisexual and other men who have sex with men in Australia, Int J Drug Policy. 2020 Jan 8;76:102659. doi: 10.1016/j.drugpo.2019.102659
  • 2019
    Predictors of Daily Adherence to HIV Pre-exposure Prophylaxis in Gay/Bisexual Men in the PRELUDE Demonstration Project, AIDS Behav. 2019 May;23(5):1287-1296. doi: 10.1007/s10461-018-2353-5.
  • 2018
    Qualitative insights into adherence to HIV pre-exposure prophylaxis (PrEP) among Australian gay and bisexual men, AIDS Patient Care STDS. 2018 Dec 3;32(12); doi: 10.1089/apc.2018.0106
  • 2017
    Baseline preferences for daily, event-driven, or periodic HIV Pre-Exposure Prophylaxis (PrEP) among gay and bisexual men in the PRELUDE Demonstration Project, Front Public Health. 2017 Dec 15;doi: 10.3389/fpubh.2017.00341
  • 2017
    Validation of participant eligibility for pre-exposure prophylaxis: Baseline data from the PRELUDE demonstration project., PLOS ONE. 2017 Sept 26;12(9)e0185398
  • 2016
    Protocol for an open-label, single-arm trial of HIV pre-exposure prophylaxis (PrEP) among people at high risk of HIV infection: the NSW Demonstration Project PRELUDE, BMJ Open 2016;6:e012179 doi:10.1136/bmjopen-2016-012179
  • 2015
    Barriers to Care in Gout: From Prescriber to Patient, J Rheumatol. 2016 Jan;43(1):144-9. doi: 10.3899/jrheum.15060

Professional Memberships

  • International AIDS Society
  • Australasian Society for HIV Medicine