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Determinants of adherence to daily PrEP measured as intracellular tenofovir diphosphate concentrations over 24 months of follow-up among men who have sex with men.
van den Elshout MA, Hoornenborg E, Coyer L, Anderson PL, Davidovich U, de Vries HJ, Prins M, Schim van der Loeff MF; of the Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative (H-TEAM). van den Elshout MA, et al. Sex Transm Infect. 2023 Aug;99(5):303-310. doi: 10.1136/sextrans-2022-055499. Epub 2022 Sep 5. Sex Transm Infect. 2023. PMID: 37258273 Free PMC article.
METHODS: Men who have sex with men (MSM) using dPrEP (emtricitabine/tenofovir disoproxil) within the Amsterdam PrEP demonstration project at the Public Health Service of Amsterdam, provided dried blood spots (DBS) 12 and 24 months after PrEP initiation. ...
METHODS: Men who have sex with men (MSM) using dPrEP (emtricitabine/tenofovir disoproxil) within the Amsterdam PrEP demonstration pro …
Sexual behaviour and incidence of sexually transmitted infections among men who have sex with men (MSM) using daily and event-driven pre-exposure prophylaxis (PrEP): Four-year follow-up of the Amsterdam PrEP (AMPrEP) demonstration project cohort.
van den Elshout MAM, Wijstma ES, Boyd A, Jongen VW, Coyer L, Anderson PL, Davidovich U, de Vries HJC, Prins M, Schim van der Loeff MF, Hoornenborg E; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative (H-TEAM). van den Elshout MAM, et al. PLoS Med. 2024 May 8;21(5):e1004328. doi: 10.1371/journal.pmed.1004328. eCollection 2024 May. PLoS Med. 2024. PMID: 38718068 Free PMC article.
To inform sexual health counselling and STI screening programmes, we aimed to study sexual behaviour and STI incidence among men who have sex with men (MSM) and transgender women who use long-term daily or event-driven PrEP. METHODS AND FINDINGS: The Amsterdam PrEP demonst …
To inform sexual health counselling and STI screening programmes, we aimed to study sexual behaviour and STI incidence among men who have se …
The Impact of Pre-exposure Prophylaxis on Sexual Well-Being Among Men Who Have Sex with Men.
Zimmermann HML, Postma LR, Achterbergh RCA, Reyniers T, Schim van der Loeff MF, Prins M, de Vries HJC, Hoornenborg E, Davidovich U; Amsterdam PrEP Project Team in the HIV Transmission Elimination Amsterdam Initiative (H-TEAM). Zimmermann HML, et al. Arch Sex Behav. 2021 May;50(4):1829-1841. doi: 10.1007/s10508-020-01833-5. Epub 2021 Feb 22. Arch Sex Behav. 2021. PMID: 33619674
We conducted 43 in-depth interviews (June 2017-June 2018) with HIV-negative MSM who started PrEP within the Amsterdam PrEP study. We used purposive sampling to select participants who (1) reported changes on well-being indicators; (2) switched between PrEP-dosing regimens; …
We conducted 43 in-depth interviews (June 2017-June 2018) with HIV-negative MSM who started PrEP within the Amsterdam PrEP study. We …
Change in sexual risk behaviour after 6 months of pre-exposure prophylaxis use: results from the Amsterdam pre-exposure prophylaxis demonstration project.
Hoornenborg E, Coyer L, van Laarhoven A, Achterbergh R, de Vries H, Prins M, van der Loeff MS; Amsterdam PrEP Project team in the HIV Transmission Elimination Amsterdam Initiative. Hoornenborg E, et al. AIDS. 2018 Jul 17;32(11):1527-1532. doi: 10.1097/QAD.0000000000001874. AIDS. 2018. PMID: 29762169
DESIGN: Prospective, open-label demonstration study at a large sexually transmitted infection (STI) clinic in Amsterdam, the Netherlands. METHODS: Participants answered questions about sexual behaviour in the preceding 3 months, including number of anal sex partners and fr …
DESIGN: Prospective, open-label demonstration study at a large sexually transmitted infection (STI) clinic in Amsterdam, the Netherla …
Decision-making regarding condom use among daily and event-driven users of preexposure prophylaxis in the Netherlands.
Zimmermann HML, Jongen VW, Boyd A, Hoornenborg E, Prins M, de Vries HJC, Schim van der Loeff MF, Davidovich U; Amsterdam PrEP Project Team in the HIV Transmission Elimination Amsterdam Initiative (H-TEAM). Zimmermann HML, et al. AIDS. 2020 Dec 1;34(15):2295-2304. doi: 10.1097/QAD.0000000000002714. AIDS. 2020. PMID: 33196494
DESIGN: We analyzed quantitative app-based diary data on daily sexual practices (August 2015-February 2019) and qualitative in-depth interviews among MSM using daily PrEP and event-driven PrEP (edPrEP) in the Amsterdam PrEP demonstration project. METHODS: Participants coul …
DESIGN: We analyzed quantitative app-based diary data on daily sexual practices (August 2015-February 2019) and qualitative in-depth intervi …
MSM starting preexposure prophylaxis are at risk of hepatitis C virus infection.
Hoornenborg E, Achterbergh RCA, Schim van der Loeff MF, Davidovich U, Hogewoning A, de Vries HJC, Schinkel J, Prins M, van de Laar TJW; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative, MOSAIC study group. Hoornenborg E, et al. AIDS. 2017 Jul 17;31(11):1603-1610. doi: 10.1097/QAD.0000000000001522. AIDS. 2017. PMID: 28657964
We studied the HCV prevalence in HIV-negative MSM who start preexposure prophylaxis (PrEP) in Amsterdam. Phylogenetic analysis was used to compare HCV strains obtained from HIV-negative and HIV-positive MSM. METHODS: At enrolment in the Amsterdam PrEP demonstration …
We studied the HCV prevalence in HIV-negative MSM who start preexposure prophylaxis (PrEP) in Amsterdam. Phylogenetic analysis was us …
Improving adherence to daily preexposure prophylaxis among MSM in Amsterdam by providing feedback via a mobile application.
van den Elshout MAM, Hoornenborg E, Achterbergh RCA, Coyer L, Anderson PL, Davidovich U, de Vries HJC, Prins M, van der Loeff MFS; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative (H-TEAM). van den Elshout MAM, et al. AIDS. 2021 Sep 1;35(11):1823-1834. doi: 10.1097/QAD.0000000000002949. AIDS. 2021. PMID: 34001705 Clinical Trial.
DESIGN: Randomized clinical trial among MSM participating in the Amsterdam PrEP demonstration project (AMPrEP). METHODS: Eligible participants were randomized 1 : 1 to the control or intervention app. ...
DESIGN: Randomized clinical trial among MSM participating in the Amsterdam PrEP demonstration project (AMPrEP). METHODS: Eligible par …
Transient Changes in Preexposure Prophylaxis Use and Daily Sexual Behavior After the Implementation of COVID-19 Restrictions Among Men Who Have Sex With Men.
Jongen VW, Zimmermann HML, Boyd A, Hoornenborg E, van den Elshout MAM, Davidovich U, van Duijnhoven YTHP, de Vries HJC, Prins M, Schim van der Loeff MF, Coyer L; Amsterdam PrEP Project team in the HIV Transmission Elimination Amsterdam Initiative. Jongen VW, et al. J Acquir Immune Defic Syndr. 2021 Aug 15;87(5):1111-1118. doi: 10.1097/QAI.0000000000002697. J Acquir Immune Defic Syndr. 2021. PMID: 34229327 Free PMC article.
BACKGROUND: We assessed how the Dutch restrictions imposed on March 15, 2020, affected sexual behavior, preexposure prophylaxis (PrEP), and condom use among PrEP users in Amsterdam. METHODS: We used data on (1) PrEP use, (2) anal sex acts, and (3) condom use, per partner t …
BACKGROUND: We assessed how the Dutch restrictions imposed on March 15, 2020, affected sexual behavior, preexposure prophylaxis (PrEP), and …
A Mobile Application to Collect Daily Data on Preexposure Prophylaxis Adherence and Sexual Behavior Among Men Who Have Sex With Men: Use Over Time and Comparability With Conventional Data Collection.
Finkenflügel RNN, Hoornenborg E, Achterbergh RCA, Marra E, Davidovich U, de Vries HJC, Prins M, Schim van der Loeff MF; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative (H-TEAM). Finkenflügel RNN, et al. Sex Transm Dis. 2019 Jun;46(6):400-406. doi: 10.1097/OLQ.0000000000000999. Sex Transm Dis. 2019. PMID: 30882717 Free PMC article.
BACKGROUND: We studied the use of a mobile application (app) to measure human immunodeficiency virus (HIV) preexposure prophylaxis (PrEP) adherence and sexual behavior, assessed determinants of app use, and we compared data in app and questionnaires. METHODS: Men who have sex wit …
BACKGROUND: We studied the use of a mobile application (app) to measure human immunodeficiency virus (HIV) preexposure prophylaxis (PrEP) ad …
Men who have sex with men more often chose daily than event-driven use of pre-exposure prophylaxis: baseline analysis of a demonstration study in Amsterdam.
Hoornenborg E, Achterbergh RC, van der Loeff MFS, Davidovich U, van der Helm JJ, Hogewoning A, van Duijnhoven YT, Sonder GJ, de Vries HJ, Prins M; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative. Hoornenborg E, et al. J Int AIDS Soc. 2018 Mar;21(3):e25105. doi: 10.1002/jia2.25105. J Int AIDS Soc. 2018. PMID: 29603900 Free PMC article.
INTRODUCTION: The Amsterdam PrEP project is a prospective, open-label demonstration study at a large sexually transmitted infection (STI) clinic. ...METHODS: From August 2015 through May 2016, enrolment took place at the STI clinic of the Public Health Service of Amster …
INTRODUCTION: The Amsterdam PrEP project is a prospective, open-label demonstration study at a large sexually transmitted infection ( …