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van Wees D, Coyer L, van den Elshout M, de Coul EO, van Aar F. The Best Predictor of Future Behavior May Be the Past: Exploring Behavior Change in Men Who Have Sex with Men Using Pre-exposure Prophylaxis in the Netherlands. ARCHIVES OF SEXUAL BEHAVIOR 2024; 53:2777-2793. [PMID: 38709341 PMCID: PMC11219441 DOI: 10.1007/s10508-024-02863-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 02/01/2024] [Accepted: 03/26/2024] [Indexed: 05/07/2024]
Abstract
Pre-exposure prophylaxis (PrEP) use prevents HIV transmission, and may lead to changes in sexual behavior. We aimed to explore sexual behavior over time, and identify predictors of behavior change in men who have sex with men (MSM) using PrEP at sexual health centers (SHC) in the Netherlands. We used longitudinal data from the national STI surveillance database (January 2018-June 2021) of HIV-negative MSM who first initiated PrEP in the national PrEP pilot. We modelled behavior change after PrEP initiation, and identified predictors of behavior change using multi-state Markov models. The probability of stopping group sex, chemsex, use of poppers or erection stimulants, and having ≥ 10 partners in the past 6 months among included MSM (n = 4,349, n SHC visits = 21,820) was higher compared to the probability of starting with these behaviors after PrEP initiation. However, MSM who used condoms consistently during anal sex had a high probability of changing to inconsistent condom use (0.8) at the next visit, and inconsistent condom users mostly remained inconsistent (0.8). First visit, visiting the SHC more often (vs. regular), and STI diagnosis were predictors of starting or continuing with most of the behaviors associated with increased risk. Behavior change was less likely among older participants (> 34 compared to ≤ 34 years), and during COVID-19 lockdown and post-lockdown periods compared to pre-COVID-19. Although condom use decreased over time, transitions towards stopping with other behaviors associated with increased likelihood of acquiring an STI after PrEP initiation were common. This may suggest increased sexual empowerment, especially among younger MSM. Predictors of behavior change may help to identify MSM who are likely to start with or continue to engage in these behaviors in the near future and to provide suitable and timely counselling about behavior and PrEP adherence.
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Affiliation(s)
- Daphne van Wees
- Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), P.O Box 1, 3720 BA, Bilthoven, The Netherlands.
| | - Liza Coyer
- Department of Infectious Diseases, Research and Prevention, Public Health Service of Amsterdam, Amsterdam, The Netherlands
| | - Mark van den Elshout
- Department of Infectious Diseases, Research and Prevention, Public Health Service of Amsterdam, Amsterdam, The Netherlands
- Municipal Health Service for the Utrecht Region, Utrecht, The Netherlands
| | - Eline Op de Coul
- Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), P.O Box 1, 3720 BA, Bilthoven, The Netherlands
| | - Fleur van Aar
- Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), P.O Box 1, 3720 BA, Bilthoven, The Netherlands
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2
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Wijstma ES, Jongen VW, Boyd A, van den Elshout MAM, de Vries HJC, Davidovich U, Anderson PL, Prins M, Hoornenborg E, Schim van der Loeff MF. Concordance between daily diary reported pre-exposure prophylaxis intake and intraerythrocytic tenofovir diphosphate in the Amsterdam Pre-exposure Prophylaxis demonstration project. AIDS 2024; 38:1248-1256. [PMID: 38518076 DOI: 10.1097/qad.0000000000003889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
OBJECTIVE We assessed the association and concordance between self-reported oral pre-exposure prophylaxis (PrEP) intake in a diary app and intraerythrocytic drug metabolite concentrations. DESIGN AMPrEP was a prospective demonstration study providing daily and event-driven PrEP to MSM in Amsterdam, the Netherlands (2015-2020). METHODS Participants could record their PrEP intake in a diary app. Dried blood spots (DBS) were taken at 6, 12, 24, and 48 months and analysed for tenofovir diphosphate (TFV-DP) and emtricitabine triphosphate (FTC-TP) concentrations. We included TFV-DP measurements preceded by diary completion on at least 90% of days in the 6 weeks prior. We examined the association between self-reported PrEP intake (i.e. number of pills) and TFV-DP concentrations using tobit regression with a random intercept per participant. We also calculated concordance between categorized PrEP intake (i.e. <2, 2-3, 4-6 or 7 pills per week) and categorized TFV-DP concentrations (i.e. <350, 350-699,700-1249 or ≥1250 fmol/punch) using weighted Cohen's kappa. Last, we calculated concordance between self-reported recent PrEP intake (yes/no, in past 2 days) and quantifiability of FTC-TP (yes/no) using Cohen's kappa. RESULTS Seven hundred and fifty-nine DBS measurements from 282 MSM were included. Self-reported PrEP intake was strongly and positively associated with TFV-DP concentration ( β = 0.77, 95% CI = 0.70-0.84, P < 0.0001). Concordance between categorized PrEP intake and TFV-DP concentration was moderate ( κ = 0.44, 95% CI = 0.39-0.50). Concordance between self-reported recent PrEP intake and FTC-TP quantifiability was perfect ( κ = 0.83, 95% CI 0.76-0.90). CONCLUSION Self-reported PrEP intake in a diary app is strongly correlated with actual use, and therefore reliable for comparing PrEP adherence between groups. Still, suboptimal criterion validity according to clinically relevant categories warrants caution when assessing 6-week reported adherence for individuals.
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Affiliation(s)
- Eline S Wijstma
- Department of Infectious Diseases, Public Health Service of Amsterdam
| | - Vita W Jongen
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Stichting HIV Monitoring
| | - Anders Boyd
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Stichting HIV Monitoring
- Amsterdam Institute for Immunology & Infection Diseases (AII)
- Department of Infectious Diseases, Amsterdam UMC location University of Amsterdam
| | | | - Henry J C de Vries
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Amsterdam Institute for Immunology & Infection Diseases (AII)
- Department of Dermatology, Amsterdam UMC location University of Amsterdam
| | - Udi Davidovich
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Department of Social Psychology, University of Amsterdam, Amsterdam, the Netherlands
| | - Peter L Anderson
- Department of Pharmaceutical Sciences, University of Colorado, Anschutz Medical Campus, Aurora CO, USA
| | - Maria Prins
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Amsterdam Institute for Immunology & Infection Diseases (AII)
- Department of Infectious Diseases, Amsterdam UMC location University of Amsterdam
| | - Elske Hoornenborg
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Amsterdam Institute for Immunology & Infection Diseases (AII)
| | - Maarten F Schim van der Loeff
- Department of Infectious Diseases, Public Health Service of Amsterdam
- Amsterdam Institute for Immunology & Infection Diseases (AII)
- Department of Infectious Diseases, Amsterdam UMC location University of Amsterdam
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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. 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. PLoS Med 2024; 21:e1004328. [PMID: 38718068 PMCID: PMC11111007 DOI: 10.1371/journal.pmed.1004328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 05/22/2024] [Accepted: 04/10/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND An increasing number of countries are currently implementing or scaling-up HIV pre-exposure prophylaxis (PrEP) care. With the introduction of PrEP, there was apprehension that condom use would decline and sexually transmitted infections (STIs) would increase. 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 demonstration project (AMPrEP) was a prospective, closed cohort study, providing oral daily PrEP and event-driven PrEP to MSM and transgender women from 2015 to 2020. Participants could choose their PrEP regimen and could switch at each three-monthly visit. STI testing occurred at and, upon request, in-between 3-monthly study visits. We assessed changes in numbers of sex partners and condomless anal sex (CAS) acts with casual partners over time using negative binomial regression, adjusted for age. We assessed HIV incidence and changes in incidence rates (IRs) of any STI (i.e., chlamydia, gonorrhoea, or infectious syphilis) and individual STIs over time using Poisson regression, adjusted for age and testing frequency. A total of 367 participants (365 MSM) commenced PrEP and were followed for a median 3.9 years (interquartile range [IQR] = 3.4-4.0). Median age was 40 years (IQR = 32-48), 315 participants (85.8%) self-declared ethnicity as white and 280 (76.3%) had a university or university of applied sciences degree. Overall median number of sex partners (past 3 months) was 13 (IQR = 6-26) and decreased per additional year on PrEP (adjusted rate ratio [aRR] = 0.86/year, 95% confidence interval [CI] = 0.83-0.88). Overall median number of CAS acts with casual partners (past 3 months) was 10 (IQR = 3-20.5) and also decreased (aRR = 0.92/year, 95% CI = 0.88-0.97). We diagnosed any STI in 1,092 consultations during 1,258 person years, resulting in an IR of 87/100 person years (95% CI = 82-92). IRs of any STI did not increase over time for daily PrEP or event-driven PrEP users. Two daily PrEP users, and no event-driven PrEP users, were diagnosed with HIV during their first year on PrEP. Study limitations include censoring follow-up due to COVID-19 measures and an underrepresentation of younger, non-white, practically educated, and transgender individuals. CONCLUSIONS In this prospective cohort with a comparatively long follow-up period of 4 years, we observed very low HIV incidence and decreases in the numbers of casual sex partners and CAS acts over time. Although the STI incidence was high, it did not increase over time. TRIAL REGISTRATION The study was registered at the Netherlands Trial Register (NL5413) https://www.onderzoekmetmensen.nl/en/trial/22706.
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Affiliation(s)
| | - Eline S. Wijstma
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
| | - Anders Boyd
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Stichting hiv monitoring, Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Amsterdam Institute for Immunology and Infectious Diseases (AII), Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Department of Infectious Diseases, Amsterdam, the Netherlands
| | - Vita W. Jongen
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Stichting hiv monitoring, Amsterdam, the Netherlands
| | - Liza Coyer
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
| | - Peter L. Anderson
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Udi Davidovich
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Department of Social Psychology, University of Amsterdam, Amsterdam, the Netherlands
| | - Henry J. C. de Vries
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Amsterdam Institute for Immunology and Infectious Diseases (AII), Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Department of Dermatology, Amsterdam, the Netherlands
| | - Maria Prins
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Amsterdam Institute for Immunology and Infectious Diseases (AII), Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Department of Infectious Diseases, Amsterdam, the Netherlands
| | - Maarten F. Schim van der Loeff
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Amsterdam Institute for Immunology and Infectious Diseases (AII), Amsterdam, the Netherlands
- Amsterdam UMC location University of Amsterdam, Department of Infectious Diseases, Amsterdam, the Netherlands
| | - Elske Hoornenborg
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, the Netherlands
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Nyman F, Jellesma FC. Prevention of HIV in the MSM Population: A Cultural-Historical Comparison of Sweden and the Netherlands. JOURNAL OF HOMOSEXUALITY 2024; 71:28-55. [PMID: 35895000 DOI: 10.1080/00918369.2022.2103870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The aim of this article is to compare the cultural-historical events and decisions regarding how to deal with the higher risks of HIV in MSM, and more specifically, gay populations in Sweden and the Netherlands. A narrative literature was used, based on 46 scientific articles and 20 additional semi-scientific resources. The themes of the arrival of HIV and AIDS, blood donations, offender/victim, the balance of risks with respect to the statistical probabilities and the human factor, and finally, prevention were discussed. It is concluded that certain context-specific historical events (the Dutch Bloody Sunday and the Swedish gay sauna ban) and culturally determined processes (trust in others in the Netherlands, and disapproval of casual sex in Sweden) have led to some important differences in how HIV and AIDS and the higher risks for gay men and MSM have been dealt with. In the Netherlands, there is a stronger protective attitude when it comes to the freedom and autonomy of MSM both when it comes to decisions about sexual behavior and to sharing any positive HIV status. In Sweden, on the other hand, there is a stronger tendency to enforce informing others of their HIV status. In both countries, despite efforts to prevent this, HIV has increased stigma for gay men and other MSM.
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Affiliation(s)
- Fredrik Nyman
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
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5
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Groot Bruinderink ML, Boyd A, Coyer L, Boers S, Blitz L, Brand JM, Götz HM, Stip M, Woudstra J, Yap K, Vermey K, Matser A, Feddes AR, Jongen VW, Prins M, Hoornenborg E, van Harreveld F, Schim van der Loeff MF, Davidovich U. Online-Mediated HIV Pre-exposure Prophylaxis Care and Reduced Monitoring Frequency for Men Who Have Sex With Men: Protocol for a Randomized Controlled Noninferiority Trial (EZI-PrEP Study). JMIR Res Protoc 2023; 12:e51023. [PMID: 37938875 PMCID: PMC10666015 DOI: 10.2196/51023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND Daily and event-driven HIV pre-exposure prophylaxis (PrEP) with oral tenofovir-emtricitabine is highly effective to prevent HIV in men who have sex with men (MSM). PrEP care generally consists of in-clinic monitoring every 3 months that includes PrEP dispensing, counseling, and screening for HIV and sexually transmitted infections (STIs). However, the optimal frequency for monitoring remains undetermined. Attending a clinic every 3 months for monitoring may be a barrier for PrEP. Online-mediated PrEP care and reduced frequency of monitoring may lower this barrier. OBJECTIVE The primary objective of this study is to establish the noninferiority of online PrEP care (vs in-clinic care) and monitoring every 6 months (vs every 3 months). The secondary objectives are to (1) examine differences between PrEP care modalities regarding incidences of STIs, HIV infection, and hepatitis C virus infection; retention in PrEP care; intracellular tenofovir-diphosphate concentration; and satisfaction, usability, and acceptability of PrEP care modalities; and (2) evaluate associations of these study outcomes with sociodemographic, behavioral, and psychological characteristics. METHODS This study is a 2×2 factorial, 4-arm, open-label, multi-center, randomized, controlled, noninferiority trial. The 4 arms are (1) in-clinic monitoring every 3 months, (2) in-clinic monitoring every 6 months, (3) online monitoring every 3 months, and (4) online monitoring every 6 months. The primary outcome is a condomless anal sex act with a casual partner not covered or insufficiently covered by PrEP (ie, "unprotected act") as a proxy for HIV infection risk. Eligible individuals are MSM, and transgender and gender diverse people aged ≥18 years who are eligible for PrEP care at 1 of 4 participating sexual health centers in the Netherlands. The required sample size is 442 participants, and the planned observation time is 24 months. All study participants will receive access to a smartphone app, which contains a diary. Participants are requested to complete the diary on a daily basis during the first 18 months of participation. Participants will complete questionnaires at baseline and 6, 12, 18, and 24 months. Dried blood spots will be collected at 6 and 12 months for assessment of intracellular tenofovir-diphosphate concentration. Incidence rates of unprotected acts will be compared between the online and in-clinic arms, and between the 6-month and 3-month arms. Noninferiority will be concluded if the upper limit of the 2-sided 97.5% CI of the incidence rate ratio is <1.8. RESULTS The results of the main analysis are expected in 2024. CONCLUSIONS This trial will demonstrate whether online PrEP care and monitoring every 6 months is noninferior to standard PrEP care in terms of PrEP adherence. If noninferiority is established, these modalities may lower barriers for initiating and continuing PrEP use and potentially reduce the systemic burden for PrEP providers. TRIAL REGISTRATION ClinicalTrials.gov NCT05093036; https://tinyurl.com/28b8ndvj. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/51023.
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Affiliation(s)
- Marije L Groot Bruinderink
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
| | - Anders Boyd
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- HIV Monitoring Foundation, Amsterdan, Netherlands
| | - Liza Coyer
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
| | - Sophie Boers
- Department of Sexual Health, Public Health Service of Gelderland-Zuid, Nijmegen, Netherlands
| | - Laura Blitz
- Department of Sexual Health, Public Health Service of Haaglanden, The Hague, Netherlands
| | - Jean-Marie Brand
- Department of Sexual Health, Public Health Service of Haaglanden, The Hague, Netherlands
| | - Hannelore M Götz
- Department of Infectious Diseases, Public Health Service of Rotterdam-Rijnmond, Rotterdam, Netherlands
- Department of Public Health, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Martijn Stip
- Department of Infectious Diseases, Public Health Service of Rotterdam-Rijnmond, Rotterdam, Netherlands
| | - Joey Woudstra
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
| | - Kenneth Yap
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
| | | | - Amy Matser
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Amsterdam Institute for Infection & Immunity, Department of Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Allard R Feddes
- Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
| | - Vita W Jongen
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- HIV Monitoring Foundation, Amsterdan, Netherlands
| | - Maria Prins
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Amsterdam Institute for Infection & Immunity, Department of Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Elske Hoornenborg
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Amsterdam Institute for Infection & Immunity, Department of Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Frenk van Harreveld
- Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
- National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Maarten F Schim van der Loeff
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Amsterdam Institute for Infection & Immunity, Department of Infectious Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Udi Davidovich
- Department of Infectious Diseases, Public Health Service of Amsterdam, Amsterdam, Netherlands
- Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
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Laurent C, Yaya I, Cuer B, Sagaon-Teyssier L, Mensah E, Dah TTE, Coulibaly A, Kouamé MJB, Peytavin G, Serrano L, Eubanks A, Traoré I, Diallo F, Riegel L, Rojas Castro D, Dagnra CA, Anoma C, Vuylsteke B, Dembélé Keita B, Spire B. Human Immunodeficiency Virus Seroconversion Among Men Who Have Sex With Men Who Use Event-Driven or Daily Oral Pre-Exposure Prophylaxis (CohMSM-PrEP): A Multi-Country Demonstration Study From West Africa. Clin Infect Dis 2023; 77:606-614. [PMID: 37052469 DOI: 10.1093/cid/ciad221] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/03/2023] [Accepted: 04/11/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND Data on human immunodeficiency virus (HIV) seroconversion among men who have sex with men (MSM) using pre-exposure prophylaxis (PrEP) in West Africa are needed. This study aimed to document HIV seroconversion and associated determinants, PrEP adherence, plasma drug concentrations, and HIV drug resistance in MSM using event-driven or daily PrEP in Burkina Faso, Côte d'Ivoire, Mali, and Togo. METHODS A prospective cohort study was conducted in 2017-2021 among HIV-seronegative MSM aged 18 or over who were at high risk of HIV infection. Participants could choose between event-driven and daily PrEP, switch regimens, and discontinue or restart PrEP. The determinants of HIV incidence were investigated using a multivariate mixed-effects Poisson regression analysis. RESULTS A total of 647 participants were followed for a total time of 1229.3 person-years. Of 5371 visits, event-driven PrEP was chosen in 3873 (72.1%), and daily PrEP in 1400 (26.1%). HIV incidence was 2.4 per 100 person-years (95% confidence interval [CI] 1.5-3.6) for event-driven PrEP, and 0.6 per 100 person-years (95% CI .1-2.3) for daily PrEP (adjusted incidence rate ratio 4.40, 95% CI 1.00-19.36, P = .050). Adequate adherence was lower with event-driven than daily PrEP (44.3% vs 74.9%, P < .001). Plasma drug concentrations were undetectable in 92 (97.9%) of the 94 measures taken for 23 participants who seroconverted. Only 1 participant had resistance to PrEP drugs. CONCLUSIONS HIV seroconversions mainly occurred in participants who chose event-driven PrEP. The study's data highlighted major difficulties with adherence to this regimen. Improving adherence to event-driven PrEP constitutes a major research and public health priority in this context.
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Affiliation(s)
| | - Issifou Yaya
- TransVIHMI, Univ Montpellier, IRD, Inserm, Montpellier, France
| | - Benjamin Cuer
- TransVIHMI, Univ Montpellier, IRD, Inserm, Montpellier, France
| | - Luis Sagaon-Teyssier
- Inserm, IRD, Aix-Marseille Univ, SESSTIM (Sciences Economiques et Sociales de la Santé et Traitement de l'Information Médicale), ISSPAM, Marseille, France
| | | | - Ter Tiero Elias Dah
- Association African Solidarité, Ouagadougou, Burkina Faso
- Université de Ouahigouya, UFR Sciences de la santé, Ouahigouya, Burkina Faso
| | | | | | - Gilles Peytavin
- Assistance publique-Hôpitaux de Paris, Laboratoire de Pharmacologie, Hôpital Bichat-Claude Bernard and Université Paris Cité, Inserm-UMR 1137, IAME, Paris, France
| | | | - August Eubanks
- Inserm, IRD, Aix-Marseille Univ, SESSTIM (Sciences Economiques et Sociales de la Santé et Traitement de l'Information Médicale), ISSPAM, Marseille, France
| | - Issa Traoré
- Association African Solidarité, Ouagadougou, Burkina Faso
| | | | - Lucas Riegel
- Laboratoire de Recherche Communautaire, Coalition PLUS, Pantin, France
| | | | | | | | - Bea Vuylsteke
- Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | | | - Bruno Spire
- Inserm, IRD, Aix-Marseille Univ, SESSTIM (Sciences Economiques et Sociales de la Santé et Traitement de l'Information Médicale), ISSPAM, Marseille, France
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7
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Stamp BF, Powers KA, Horvath KJ, Soberano ZR, Hosek SG, Stocks JB, Rosso MT, Hightow-Weidman LB. Prediction of Sex and the Potential Use of On-Demand PrEP Among Young Men Who Have Sex With Men in the United States. J Acquir Immune Defic Syndr 2023; 93:292-299. [PMID: 36988569 PMCID: PMC10313737 DOI: 10.1097/qai.0000000000003202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 03/16/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND On-demand dosing of preexposure prophylaxis (PrEP) requires accurate prediction of sex; however, prediction abilities among young men who have sex with men (YMSM) have not been characterized. SETTING A nationally recruited prospective cohort of YMSM ages 16-24 years. METHODS We followed 120 YMSM for 8 weeks using digital daily surveys (DDSs) to measure engagement in and prediction of anal sex over 24 hours, along with condom use and other encounter-level circumstances. Our main outcome, an "unpredicted spontaneous encounter," was defined as an anal sex encounter that occurred without sufficient prior knowledge to (hypothetically) enable protective on-demand PrEP use according to dosing guidelines. We operationalized this outcome as an anal sex encounter for which a participant indicated: (1) on the prior day's DDS that there was a low likelihood of sex occurring in the subsequent 24 hours (unpredicted) and (2) on the current day's DDS that he knew ≤2 hours in advance that the encounter would occur (spontaneous). RESULTS Approximately one-third of all anal sex encounters during the study period were unpredicted and spontaneous and would not have been protected (hypothetically) by on-demand dosing. More than two-thirds of participants experienced such an encounter and almost three-quarters of all acts were condomless. CONCLUSIONS On-demand PrEP to prevent HIV acquisition may be challenging for many YMSM. Clinical and public health approaches that account for patients' predictive abilities alongside their dosing preferences may help to optimize selection of and adherence to PrEP dosing strategies.
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Affiliation(s)
- Bryce F Stamp
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Kimberly A Powers
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Keith J Horvath
- Department of Psychology, San Diego State University, San Diego, CA
| | - Zachary R Soberano
- Institute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Institute on Digital Health and Innovation, College of Nursing, Florida State University, Tallahassee, FL; and
| | - Sybil G Hosek
- Department of Child and Adolescent Psychiatry at Stroger Hospital of Cook County, Chicago, IL
| | - Jacob B Stocks
- Institute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Institute on Digital Health and Innovation, College of Nursing, Florida State University, Tallahassee, FL; and
| | - Matthew T Rosso
- Institute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Institute on Digital Health and Innovation, College of Nursing, Florida State University, Tallahassee, FL; and
| | - Lisa B Hightow-Weidman
- Institute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, NC
- Institute on Digital Health and Innovation, College of Nursing, Florida State University, Tallahassee, FL; and
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8
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van den Elshout MA, Hoornenborg E, Coyer L, Anderson PL, Davidovich U, de Vries HJ, Prins M, Schim van der Loeff MF. 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. Sex Transm Infect 2023; 99:303-310. [PMID: 37258273 PMCID: PMC10359585 DOI: 10.1136/sextrans-2022-055499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/16/2022] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES Adherence is key to the effectiveness of oral pre-exposure prophylaxis (PrEP) to prevent HIV. Therefore, we aimed to explore factors associated with adherence to daily PrEP (dPrEP). 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. From DBS, we determined intracellular tenofovir diphosphate (TFV-DP) concentrations to assess adherence; TFV-DP ≥700 fmol/punch was considered adequate. We assessed associations of sociodemographic, clinical and behavioural characteristics with TFV-DP concentrations using multivariable linear regression. RESULTS Of 263 participants who attended 12-month or 24-month study visits while on dPrEP, 257 (97.7%) provided DBS at one or both visits (492 DBS in total). Median TFV-DP concentration was 1299 (IQR 1021-1627) fmol/punch (12 months: 1332 (1087-1687); 24 months: 1248 (929-1590]). Higher TFV-DP concentrations were associated with: older age (p=0.0008), condomless anal sex with a casual partner in 6 months preceding PrEP initiation (+166 fmol/punch; 95% CI 36.5 to 296) and using a mobile application providing visualised feedback on PrEP use and sexual behaviour (+146 fmol/punch; 95% CI 28.1 to 263). Lower TFV-DP concentrations were associated with longer duration of PrEP use (24 vs 12 months; -91.5 fmol/punch; 95% CI -155 to -28.1). Time-updated number of sex partners, diagnosed STIs and chemsex were not associated with TFV-DP concentrations. CONCLUSIONS Overall, TFV-DP concentrations were high among MSM using dPrEP, indicating excellent adherence. Especially older participants, those who reported condomless anal sex with a casual partner prior to PrEP initiation and those who used an app with visualised feedback showed higher levels of adherence. As TFV-DP concentrations had decreased slightly at 2 years of PrEP use when compared with 1 year, we emphasise the importance of adherence counselling to those who continue using PrEP. TRIAL REGISTRATION NUMBER NL5413.
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Affiliation(s)
- Mark Am van den Elshout
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
| | - Elske Hoornenborg
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
| | - Liza Coyer
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
| | - Peter L Anderson
- Department of Pharmaceutical Sciences, University of Colorado-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Udi Davidovich
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
- Department of Social Psychology, University of Amsterdam Faculty of Social and Behavioural Sciences, Amsterdam, The Netherlands
| | - Henry Jc de Vries
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
- Amsterdam Institute for Infection & Immunity (AII), Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
| | - Maria Prins
- Department of Infectious Diseases Research, Public Health Service Amsterdam, Amsterdam, The Netherlands
- Amsterdam Institute for Infection & Immunity (AII), Amsterdam UMC Locatie AMC, Amsterdam, The Netherlands
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9
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Jongen VW, Reyniers T, Schim van der Loeff M, Smekens T, Hoornenborg E, van den Elshout M, Zimmermann H, Coyer L, Kenyon C, De Baetselier I, Davidovich U, de Vries HJC, Prins M, Laga M, Vuylsteke B, Boyd A. Trajectories of PrEP use among men who have sex with men: a pooled analysis of two prospective, observational cohort studies. J Int AIDS Soc 2023; 26:e26133. [PMID: 37501262 PMCID: PMC10374882 DOI: 10.1002/jia2.26133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 05/31/2023] [Indexed: 07/29/2023] Open
Abstract
INTRODUCTION Daily and event-driven oral pre-exposure prophylaxis (PrEP) reduce the risk of HIV acquisition. PrEP use can vary over time, yet little is known about the trajectories of PrEP use irrespective of the chosen PrEP regimens among men who have sex with men (MSM). METHODS Using data from a mobile, web-based diary application collected daily from 17 August 2015 until 6 May 2018, we analysed PrEP use and sexual behaviour in two large cohorts, AMPrEP (Amsterdam, the Netherlands) and Be-PrEP-ared (Antwerp, Belgium). In both cohorts, participants could choose between daily and event-driven oral PrEP every 3 months. We used group-based trajectory modelling to identify trajectories of PrEP use over time and their determinants. In addition, we estimated the incidence rate of chlamydia, gonorrhoea and syphilis within these trajectories. RESULTS We included 516 MSM (n = 322 AMPrEP; n = 194 Be-PrEP-ared), of whom 24% chose event-driven PrEP at PrEP initiation. Participants contributed 225,015 days of follow-up (median = 508 days [IQR = 429-511]). Four distinct PrEP use trajectories were identified: ≤2 tablets per week ("low frequency," 12% of the total population), 4 tablets per week ("variable," 17%), "almost daily" (31%) and "always daily" (41%). Compared to participants with "low frequency" PrEP use, participants with "variable" (odds ratio [OR] = 2.18, 95% confidence interval [CI] = 1.04-4.60) and "almost daily" PrEP use were more often AMPrEP participants (OR = 2.64, 95% CI = 1.27-5.49). "Almost daily" PrEP users were more often employed (OR = 6.76, 95% CI = 2.10-21.75) and were younger compared to participants with "low frequency" PrEP use. In addition, the number of days on which anal sex occurred was lower among participants with "low frequency" PrEP use compared to the other groups (all p<0.001). Compared to "low frequency" PrEP users, the incidence rates of chlamydia and gonorrhoea were higher for participants with "almost daily" and "always daily" PrEP use. CONCLUSIONS We uncovered four distinct PrEP use trajectories, pointing to different patterns of PrEP use in practice beyond the two-regimen dichotomy. These trajectories were related to sexual behaviour and rates of sexually transmitted infection. Tailoring PrEP care according to different PrEP use patterns could be an important strategy to improve efficient PrEP delivery.
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Affiliation(s)
- Vita W. Jongen
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
| | - Thijs Reyniers
- Department of Public HealthInstitute of Tropical MedicineAntwerpBelgium
| | - Maarten Schim van der Loeff
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Internal MedicineUniversity of AmsterdamAmsterdamThe Netherlands
- Amsterdam Institute for Infection and Immunity (AII)AmsterdamThe Netherlands
- Amsterdam Public Health Research Institute (APH)AmsterdamThe Netherlands
| | - Tom Smekens
- Department of Public HealthInstitute of Tropical MedicineAntwerpBelgium
| | - Elske Hoornenborg
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Internal MedicineUniversity of AmsterdamAmsterdamThe Netherlands
- Amsterdam Institute for Infection and Immunity (AII)AmsterdamThe Netherlands
- Amsterdam Public Health Research Institute (APH)AmsterdamThe Netherlands
| | - Mark van den Elshout
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
| | - Hanne Zimmermann
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Work and Social PsychologyMaastricht UniversityMaastrichtThe Netherlands
| | - Liza Coyer
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Internal MedicineUniversity of AmsterdamAmsterdamThe Netherlands
- Amsterdam Institute for Infection and Immunity (AII)AmsterdamThe Netherlands
- Amsterdam Public Health Research Institute (APH)AmsterdamThe Netherlands
| | - Chris Kenyon
- Department of Clinical SciencesInstitute of Tropical MedicineAntwerpBelgium
| | | | - Udi Davidovich
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Social PsychologyUniversity of AmsterdamAmsterdamThe Netherlands
| | - Henry J. C. de Vries
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Amsterdam Institute for Infection and Immunity (AII)AmsterdamThe Netherlands
- Amsterdam Public Health Research Institute (APH)AmsterdamThe Netherlands
- Department of DermatologyUniversity of AmsterdamAmsterdamThe Netherlands
| | - Maria Prins
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Department of Internal MedicineUniversity of AmsterdamAmsterdamThe Netherlands
- Amsterdam Institute for Infection and Immunity (AII)AmsterdamThe Netherlands
- Amsterdam Public Health Research Institute (APH)AmsterdamThe Netherlands
| | - Marie Laga
- Department of Public HealthInstitute of Tropical MedicineAntwerpBelgium
| | - Bea Vuylsteke
- Department of Public HealthInstitute of Tropical MedicineAntwerpBelgium
| | - Anders Boyd
- Department of Infectious DiseasesPublic Health Service AmsterdamAmsterdamThe Netherlands
- Stichting HIV MonitoringAmsterdamThe Netherlands
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10
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Devanathan AS, Dumond JB, Anderson DJC, Moody K, Poliseno AJ, Schauer AP, Sykes C, Gay CL, Rosen EP, Kashuba ADM, Cottrell ML. A Novel Algorithm to Improve PrEP Adherence Monitoring Using Dried Blood Spots. Clin Pharmacol Ther 2023; 113:896-903. [PMID: 36622798 PMCID: PMC10023501 DOI: 10.1002/cpt.2845] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/03/2023] [Indexed: 01/10/2023]
Abstract
Tenofovir diphosphate (TFVdp; an active metabolite of oral HIV pre-exposure prophylaxis (PrEP)) is measured in dried blood spots (DBS) to estimate adherence. However, TFVdp's long half-life in whole blood may lead to misclassification following a recent change in adherence. PrEP's other metabolite, emtricitabine triphosphate (FTCtp), has a shorter half-life in whole blood but adherence thresholds are undefined. We characterized DBS TFVdp and FTCtp concentrations across many dosing scenarios. Population pharmacokinetic models were fit to TFVdp and FTCtp DBS concentrations from a directly observed therapy study (NCT03218592). Concentrations were simulated for 90 days of daily dosing followed by 90 days of 1 to 7 doses/week and for event-driven PrEP (edPrEP) scenarios. Thresholds of 1,000 and 200 fmol/punch, for TFVdp and FTCtp, respectively, were reflective of taking 4 doses/week (a minimum target for effective PrEP in men). TFVdp was < 1,000 fmol/punch for 17 days after initiating daily PrEP and > 1,000 fmol/punch for 62 days after decreasing to 3 doses/week. Respectively, FTCtp was < 200 fmol/punch for 4 days and > 200 fmol/punch for 6 days. Accuracy of edPrEP adherence classification depended on duration between last sex act and DBS sampling for both measures with misclassification ranging from 9-100%. These data demonstrate adherence misclassification by DBS TFVdp for 2 months following a decline in adherence, elucidating the need for FTCtp to estimate recent adherence. We provide proof of principle that individualized interpretation is needed to support edPrEP adherence monitoring. Our collective approach facilitates clinicians' ability to interpret DBS results and administer patient-centric interventions.
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Affiliation(s)
- Aaron S. Devanathan
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Julie B. Dumond
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Daijha JC Anderson
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Kristen Moody
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Amanda J. Poliseno
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Amanda P. Schauer
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Craig Sykes
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Cynthia L. Gay
- University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Elias P. Rosen
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
| | - Angela DM Kashuba
- University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, USA
- University of North Carolina School of Medicine, Chapel Hill, NC, USA
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11
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Liu H, Lai G, Shi G, Zhong X. The Influencing Factors of HIV-Preventive Behavior Based on Health Belief Model among HIV-Negative MSMs in Western China: A Structural Equation Modeling Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10185. [PMID: 36011822 PMCID: PMC9407807 DOI: 10.3390/ijerph191610185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
(1) Background: Men who have sex with other men (MSMs) are at high risk of being infected by the human immunodeficiency virus (HIV) in western China. Pre-exposure prophylaxis (PrEP) is an efficient way to prevent HIV transmission. However, adherence is the most vital determinant factor affecting PrEP effectiveness. We conducted a study based on the Health Belief Model to explore factors that predict adherence to PrEP among a cohort of 689 MSMs in western China. (2) Methods: We assessed perceived susceptibility, severity, benefits, barriers, self-efficacy, cues to action, and HIV-preventive behavior through a cross-sectional survey. (3) Results: PrEP self-efficacy was directly associated with PrEP behaviors (β = 0.221, p < 0.001), cues to action were directly associated with PrEP behaviors (β = 0.112, p < 0.001), perceived benefits were directly associated with PrEP behaviors (β = 0.101, p < 0.001), and perceived susceptibility was directly associated with PrEP behaviors (β = 0.117, p = 0.043). (4) Conclusion: Medication self-efficacy, perceived susceptibility, and cue to action structures are predictors of the MSMs’ HIV-preventive behavior in western China. These results will provide theoretical plans for promoting PrEP adherence in MSMs.
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12
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Risks and benefits of oral HIV pre-exposure prophylaxis for people with chronic hepatitis B. THE LANCET HIV 2022; 9:e585-e594. [PMID: 35817068 PMCID: PMC9339532 DOI: 10.1016/s2352-3018(22)00123-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/18/2022] [Accepted: 04/20/2022] [Indexed: 12/20/2022]
Abstract
Individuals with chronic hepatitis B virus (HBV) infection who are at substantial risk of HIV acquisition benefit from pre-exposure prophylaxis (PrEP) with tenofovir-based antiviral therapy. Considering that tenofovir potently inhibits HBV, providing PrEP to individuals with HBV effectively results in treatment of their HBV infection. However, some clinicians might be hesitant to initiate PrEP in people with chronic HBV due to unknown risks of HBV reactivation, hepatitis, and acute liver failure during periods of antiviral cessation. Unfortunately, these knowledge gaps affect scale up of PrEP among people with chronic HBV. Emerging data regarding the risks and benefits of antiviral cessation in people with chronic HBV suggest that PrEP can be safely initiated despite the risks of non-adherence or discontinuation. People with chronic HBV who stop PrEP should be closely monitored for HBV reactivation and hepatitis flares after antiviral cessation.
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13
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Wang H, Shobowale O, den Daas C, Op de Coul E, Bakker B, Radyowijati A, Vermey K, van Bijnen A, Zuilhof W, Jonas KJ. Determinants of PrEP Uptake, Intention and Awareness in the Netherlands: A Socio-Spatial Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148829. [PMID: 35886681 PMCID: PMC9315833 DOI: 10.3390/ijerph19148829] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/24/2022]
Abstract
PrEP uptake in the Netherlands is growing but remains at suboptimal levels. Hence, the analysis of hurdles is paramount. Given the initial focus of PrEP provision among men-who-have-sex-with-men (MSM) via a demonstration project that was launched in June 2015, AmPrEP in Amsterdam, and pharmacies in the main urban areas (so called “Randstad”, entailing Amsterdam, Utrecht, Leiden, The Hague and Rotterdam), investigating regional differences is necessary. This study seeks to unravel regional differences jointly with the psycho-social determinants of PrEP uptake. This cross-sectional study included 3232 HIV-negative MSM recruited via the Dutch subsample of the European-MSM-Internet-Survey in late 2017 (EMIS-2017), which aimed to inform interventions for MSM who are highly affected by infections with HIV and other sexually transmitted infections. Prevalence and the standardised prevalence ratio (SPR) of PrEP awareness, intention and uptake were measured on a regional level (Randstad vs. the rest of the country). Multi-level logistic modelling was conducted to identify the association of PrEP uptake with PrEP awareness and intention, socio-demographic, psycho-social determinants and random effects from regional differences. MSM from the Randstad used more PrEP (SPR = 1.4 vs. 0.7) compared to the rest of the country, but there were minor differences for awareness and intention. The regional distinction was estimated to explain 4.6% of the PrEP use variance. We observed a greater influence from PrEP intention (aOR = 4.5, 95% CI 2.0–10.1), while there was limited influence from the awareness of PrEP (aOR = 0.4, 95% CI 0.04–4.4). Lower education (aOR = 0.4, 95% CI 0.2–0.9) was negatively associated with PrEP uptake; however, no significant difference was found between middle (aOR = 1.2, 95% CI 0.7–2.0) and high education. We showed that regional differences—MSM in non-urban regions—and other psycho-social determinants account for lower PrEP uptake. Based on these findings, more fine-tuned PrEP access with a focus on non-urban regions can be implemented, and tailored campaigns increasing intention/use can be conducted among target populations.
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Affiliation(s)
- Haoyi Wang
- Department of Work and Social Psychology, Maastricht University, 6200 ER Maastricht, The Netherlands; (H.W.); (O.S.)
| | - Oladipupo Shobowale
- Department of Work and Social Psychology, Maastricht University, 6200 ER Maastricht, The Netherlands; (H.W.); (O.S.)
| | - Chantal den Daas
- Health Psychology, University of Aberdeen, Aberdeen AB24 3 FX, UK;
| | - Eline Op de Coul
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands;
| | | | | | - Koenraad Vermey
- Soa Aids Netherlands, 1014 AX Amsterdam, The Netherlands; (K.V.); (A.v.B.); (W.Z.)
| | - Arjan van Bijnen
- Soa Aids Netherlands, 1014 AX Amsterdam, The Netherlands; (K.V.); (A.v.B.); (W.Z.)
| | - Wim Zuilhof
- Soa Aids Netherlands, 1014 AX Amsterdam, The Netherlands; (K.V.); (A.v.B.); (W.Z.)
| | - Kai J. Jonas
- Department of Work and Social Psychology, Maastricht University, 6200 ER Maastricht, The Netherlands; (H.W.); (O.S.)
- Correspondence: ; Tel.: +31-43-38-84068
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14
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Koole JC, de la Court F, Welkers MR, Yap K, Stalenhoef JE, Jurriaans S, de Vries HJ, Op de Coul EL, Prins M, Hoornenborg E. HIV-1-infection in a man who has sex with men despite self-reported excellent adherence to pre-exposure prophylaxis, the Netherlands, August 2021: be alert to emtricitabine/tenofovir-resistant strain transmission. EURO SURVEILLANCE : BULLETIN EUROPEEN SUR LES MALADIES TRANSMISSIBLES = EUROPEAN COMMUNICABLE DISEASE BULLETIN 2022; 27. [PMID: 35393931 PMCID: PMC8991733 DOI: 10.2807/1560-7917.es.2022.27.14.2200275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In August 2021, a man who has sex with men was diagnosed with HIV-1 infection despite using event-driven pre-exposure prophylaxis for over 2 years with self-reported excellent adherence. Sequencing identified resistance-associated mutations (RAM) M184V and K65R, conferring resistance to emtricitabine and tenofovir, and RAM V108I and E138A. Background RAM prevalence was two of 164 (1.2%) new HIV diagnoses in Amsterdam (2017–19). We reiterate the need for frequent HIV testing among PrEP users and additional testing in case of symptoms.
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Affiliation(s)
- Jeffrey Cd Koole
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands
| | - Feline de la Court
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands
| | - Matthijs Ra Welkers
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands.,Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Amsterdam, the Netherlands
| | - Kenneth Yap
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands
| | | | - Suzanne Jurriaans
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, Amsterdam, the Netherlands
| | - Henry Jc de Vries
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands.,Department of Dermatology, Amsterdam Institute for Infection and Immunity (AII), Amsterdam UMC, University of Amsterdam, location Academic Medical Centre, Amsterdam, the Netherlands
| | - Eline Lm Op de Coul
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Maria Prins
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands.,Department of Infectious Diseases, Amsterdam Infection and Immunity Institute (AII), Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Elske Hoornenborg
- Department of Infectious Diseases, Public Health Service Amsterdam, Amsterdam, the Netherlands
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15
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PrEP Use, Sexual Behaviour, and PrEP Adherence Among Men who have Sex with Men Living in Wales Prior to and During the COVID-19 Pandemic. AIDS Behav 2022; 26:2746-2757. [PMID: 35182283 PMCID: PMC8857895 DOI: 10.1007/s10461-022-03618-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2022] [Indexed: 11/24/2022]
Abstract
We examined PrEP use, condomless anal sex (CAS), and PrEP adherence among men who have sex with men (MSM) attending sexual health clinics in Wales, UK. In addition, we explored the association between the introduction of measures to control transmission of SARS-CoV-2 on these outcomes. We conducted an ecological momentary assessment study of individuals in receipt of PrEP in Wales. Participants used an electronic medication cap to record PrEP use and completed weekly sexual behaviour surveys. We defined adherence to daily PrEP as the percentage of CAS episodes covered by daily PrEP (preceded by ≥ 3 days of PrEP and followed by ≥ 2 days). Sixty participants were recruited between September 2019 and January 2020. PrEP use data prior to the introduction of control measures were available over 5785 person-days (88%) and following their introduction 7537 person-days (80%). Data on CAS episodes were available for 5559 (85%) and 7354 (78%) person-days prior to and following control measures respectively. Prior to the introduction of control measures, PrEP was taken on 3791/5785 (66%) days, there were CAS episodes on 506/5559 (9%) days, and 207/406 (51%) of CAS episodes were covered by an adequate amount of daily PrEP. The introduction of pandemic-related control measures was associated with a reduction in PrEP use (OR 0.44, 95%CI 0.20–0.95), CAS (OR 0.35, 95%CI 0.17–0.69), and PrEP adherence (RR = 0.55, 95%CI 0.34–0.89) and this may have implications for the health and wellbeing of PrEP users and, in addition to disruption across sexual health services, may contribute to wider threats across the HIV prevention cascade.
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16
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Wu HJ, Yu YF, Ku SWW, Tseng YC, Yuan CW, Li CW, Huang PH, Ko NY, Anderson PL, Strong C. Usability and effectiveness of adherence monitoring of a mobile app designed to monitor and improve adherence to event-driven and daily HIV pre-exposure prophylaxis among men who have sex with men in Taiwan. Digit Health 2022; 8:20552076221102770. [PMID: 35646378 PMCID: PMC9131382 DOI: 10.1177/20552076221102770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 05/05/2022] [Indexed: 11/17/2022] Open
Abstract
Objective The UPrEPU mobile app is a self-monitoring system to enable men who have sex with men to optimize their pre-exposure prophylaxis adherence for HIV prevention. The app was designed to accommodate a rather complicated event-driven dosing schedule. We aim to evaluate the usability of the UPrEPU app and its effectiveness in improving adherence monitoring. Methods From May to October 2020, 35 participants were enrolled for the usability study and followed up for 4 months. Blood samples for the drug concentration in the dried blood spots were obtained once during the second to fourth follow-up visits. The effectiveness of adherence monitoring was analyzed using Cohen's kappa statistic to calculate the concordance between the average number of pills taken and drug concentration in the dried blood spots. Results Overall retention was 91.4% (32 participants) at the end of the study. Participants used the app for a mean of 29 days and made 2565 data entries in total, with an average of 76 data entries. The average systematic usability scale score for the app was 71.5, indicating acceptable usability. Slight agreement was reached between the dried blood spots measurement and the number of pills taken and recorded in the app (weighted kappa: 0.21). Conclusions Our user-centered UPrEPU app demonstrated that it could accommodate both daily and event-driven dosing schedules for men who have sex with men clients with acceptable usability scores. We confirmed that complex behaviors such as different drug-dosing regimens that are contingent on sexual behaviors could be incorporated into the design of a mobile app.
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Affiliation(s)
- Huei-Jiuan Wu
- UNSW Sydney, The Kirby Institute, University of New South Wales, Sydney, New South Wales, Australia
| | - Yi-Fang Yu
- Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Stephane Wen-Wei Ku
- Division of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Division of Infectious Diseases, Department of Medicine, Taipei City Hospital Renai Branch, Taipei, Taiwan
| | - Yuan-Chi Tseng
- Institute of Service Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Chien-Wen Yuan
- Graduate Institute of Library & Information Studies, National Taiwan Normal University, Taipei, Taiwan
| | - Chia-Wen Li
- Division of Infectious Diseases, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Hsien Huang
- Department of Psychology, National Chengchi University, Taipei, Taiwan
| | - Nai-Ying Ko
- Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Nursing, College of Medicine, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Peter L. Anderson
- Department of Pharmaceutical Sciences, University of Colorado - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Carol Strong
- Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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