Results
- 1. Project summary
2. Factsheets
- PROTECT Factsheet – Trans&NB
- PROTECT Factsheet – Hetero – Ciswomen
- PROTECT Factsheet – Hetero – Cismen
3. Academic Papers
In general, we strive to publish all papers open access. In case that you cannot access a paper, please reach out to us!
These two papers describe the methods and promotion strategy of PROTECT
These two papers describe the methods and promotion strategy of PROTECT
The following papers focus on individual data points (and will be updated regularly)
- Wang, H., Kolstee, J., Zimmermann, H. M., Tosh, J., Schroeder, M., & Jonas, K. J. (2026). Italy is ready—extended PrEP cascade, and determinants of intention to use long-acting PrEP and unmet PrEP needs among men who have sex with men, trans* individuals, heterosexual women, and men. HIV Research & Clinical Practice, 27(1), 2679339.
- Wang, H., Kolstee, J., Tosh, J., Schroeder, M., Appiah, A., Zimmermann, H. M., & Jonas, K. J. (2026). Enthusiasm and hesitation: a structural topic modelling analysis of long-acting injectable PrEP perceptions among Dutch-speaking MSM. HIV Research & Clinical Practice, 27(1), 2656048.
- Kolstee, J., Wang, H., Zimmermann, H., Schroeder, M., Appiah, A., Sarkar, S., … & Jonas, K. (2026). Exploring the interest and intention to use long-acting injectable PrEP (LAI-PrEP) among gay, bisexual and other men who have sex with men (GBMSM) in the Netherlands. AIDS and Behavior, 1-11.
- Wang, H., Kolstee, J., Casalini, J. L., Freitag, J., Tosh, J., Schroeder, M., … & Jonas, K. J. (2026). Extended PrEP cascades and determinants of long-acting PrEP intention and unmet PrEP needs among transgender women, transgender men, and non-binary individuals in 20 European countries. International Journal of Transgender Health, 1-17.
- Wang, H., Kolstee, J., Martinez, J. C., van de Vijver, D., Tosh, J., Schroeder, M., … & Jonas, K. J. (2025). Perceptions of Long-Acting injectable pre-exposure prophylaxis among men who have sex with men and transgender individuals in Europe using structural text modeling technique: Cross-Sectional study. JMIR Public Health and Surveillance, 11, e72491.
- Wang, H., Kolstee, J., Gaetani, M., Aphami, L., Lozano, A. A., Zimmermann, H. M., & Jonas, K. J. (2025). Interest in and preference for long-acting injectable pre-exposure prophylaxis among men who have sex with men, trans* individuals, and cisgender heterosexual women: A global systematic review and meta-analysis. Journal of Acquired Immune Deficiency Syndromes, 100(5), 377.
- Wang, H., Kolstee, J., Zimmermann, H. M., & Jonas, K. J. (2025). The unseen impact of affordability: copayment sensitivity for long-acting PrEP among MSM in six European Countries, October 2023–April 2024. Scientific Reports, 16(1), 968.
- Wang, H., Lozano, A. A., Kolstee, J., Zimmermann, H. M., Tosh, J., Schroeder, M., … & Jonas, K. J. (2025). Oral PrEP use and intention to use long-acting PrEP regimens among MSM accessing PrEP via governmental and non-governmental provision pathways, 20 European countries, October 2023 to April 2024. Eurosurveillance, 30(34), 2500122.
4. Main Conference Presentations
Posters – AIDS 2024
- TUPEC198 – Interest and intention to use long-acting injectable PrEP for HIV (LA-PrEP) among MSM in the Netherlands. J. Kolstee , H. Wang , H. Zimmermann , A. Adriaque Lozano , M. Schroeder , A. Appiah , C. Brown , K. Jonas
- TUPED308 – A psycho-social weather report in the Netherlands: Mapping the internalised homonegativity “storms” and the sexual self-efficacy “sunshine” among MSM and their ecological associations with HIV care cascade. Haoyi Wang, Hanne M.L. Zimmermann, Johann Kolstee, Kai J. Jonas
- WEPEC216 – Intention to use long-acting PrEP among MSM in Europe – results from the PROTECT survey from Spain, Italy, Germany, France and the United Kingdom. K. Jonas , J. Kolstee , H. Wang , A. Adriaque Lozano , J.C. Croce , M. Schroeder , A. Appiah , C. Brown , A. Milinkovic , J. Scherzer , H. Zimmermann
- WEPED330 – Mapping PrEP use cascades in the Netherlands under the internalised homonegativity “storm” and sexual self-efficacy “sunshine”: Where do MSM need an umbrella and where do they need sunglasses? Haoyi Wang, Johann Kolstee, Hanne M.L. Zimmermann, Kai J. Jonas
- THPEE501 – Preferences for the provision of oral and injectable PrEP among MSM and transgender persons who discontinued oral PrEP in Europe. H. Zimmermann , H. Wang , J. Kolstee , A. Adriaque Lozano , M. Schroeder , A. Appiah , C. Brown , J. Scherzer , K. Jonas
- THPED436 – Exploring the Relationship Between Comprehensive Sexual Health Prevention Measures and the Intent to Use Long-Acting PrEP among MSM. A. Adriaque Lozano, J. Kolstee, H. Wang, H. Zimmermann, M. Schroeder, A. Appiah, C. Brown, A. Milinkovic, K. Jonas
Presentations – Fast Track Cities Paris 2024
- “A country is more than its capital” – a geo-spatial gap analysis of oral PrEP awareness, eligibility and use, and intention to use long-acting PrEP in France, based on PROTECT survey data
- Awareness and use of oral PrEP and the intention to use long-acting PrEP in 6 European Fast Track Cities (FTC) & 1 capital city – a geo-spatial gap analysis based on data from the PROTECT survey
Presentations and posters – HIV Glasgow 2024
- Presentation – Differences in oral PrEP use patterns and intention to use long acting regimens among MSM between governmental and non governmental PrEP provision pathways in 20 European countries: A latent class analysis
- Poster – Differences in oral PrEP use patterns and intention to use long-acting regimens among MSM between governmental and non-governmental PrEP provision pathways in 20 European countries: A latent class analysis
- Preparing for long-acting PrEP delivery: Provider preferences for the provision of long-acting PrEP differ between MSM and heterosexual individuals in Europe
- Intention to use long-acting PrEP among 4960 heterosexual women and men in 20 European countries — results from the PROTECT surve