The Judging Committee of the STI & HIV 2019 World Congress is pleased to announce the winners in the following categories:

Oral Presentation Prizes

First Prize Oral Presentation
O13.5
Charlotte Peters, South Limburg Public Health Services, The Netherlands
Reaching home-based female sex workers with preventive sexual health care services in The Netherlands

First Prize Oral Presentation – Young Investigator
O16.6
Karen Lithgow, University of Victoria, Canada
Basic science aids syphilis vaccine development: Bloodstream spreading by the syphilis spirochete Treponema pallidum

Highly Commended Oral Presentation
O16.5
Jennifer Edwards, The Research Institute at Nationwide Children’s Hospital and The Ohio State University, USA
Targeting complement receptor 3 on primary human cervical cells has the potential to cure Neisseria gonorrhoeae infection

Highly Commended Oral Presentation – Young Investigator
O08.6
Liza Coyer, Public Health Service of Amsterdam, The Netherlands
Frequency and determinants of switching between daily or event-driven PrEP and discontinuing each regimen in Amsterdam MSM

Poster Prizes

First Prize Poster
P 088
T. Shafii, *S. Thomas-Smith*, M. Bradford, E. Klein, L. Richardson, C. McCarty, T. Shafii; Seattle, WA/United States of America
Using electronic screening and feedback with adolescents to decrease sexual health risks in the emergency department

First Prize Poster – Young Investigator
P364
*E. Plummer*1, L. Vodstrcil1, G. Murray2, C. Fairley1, J. Danielewski2, S. Garland2, E. Chow1, D. Bulach1, K. Fethers1, J. Hocking2, C. Bradshaw1; 1Carlton, VIC/Australia, 2Parkville, VIC/Australia
Gardnerella vaginalis clade distribution is associated with behaviours and Nugent score in women who have sex with women

Highly Commended Poster
P 588
*J. Balkus*1, S. Proll1, J. Holm2, S. Srinivasan3, D. Dinwiddie4, L. Van Der Pol5, N. Hoffman1, E. Lefkowitz5, J. Hughes1, B. Van Der Pol5, C. Wheeler4, A. Wald1, J. Marrazzo5, J. Ravel2, D. Fredricks3; 1Seattle, WA/United States of America, 2Baltimore, MD/United States of America, 3Seattle/United States of America, 4Albuquerque/United States of America, 5Birmingham, AL/United States of America
A multi-site comparative study to understand sources of variability in studies of the vaginal microbiota

Highly Commended Poster – Young Investigator
P543
*M. Reitsema*1, A.J. Van Hoek1, M. Xiridou1, J. Wallinga1, B. Van Benthem1, A. Van Sighem2, M. Schim Van Der Loeff2, M. Prins2, E. Hoornenborg2; 1Bilthoven/Netherlands, 2Amsterdam/Netherlands
Cost-effectiveness of pre-exposure prophylaxis in MSM with event-driven and daily regimens