PrEP user profiles, dynamics of PrEP use and follow-up: a cohort analysis at a Belgian HIV centre (2017-2020)

Effect of extending PrEP initiation to primary care settings: a nationwide cohort study in France

BACKGROUND

Pre-exposure prophylaxis (PrEP) medicines are key to reducing HIV infection. Improving access, increasing initiation, and expanding the populations covered is therefore important. In June, 2021, in France, PrEP initiation was extended to primary care. The aim of this study was to describe the deployment and characteristics of PrEP initiation in primary care.

METHODS

We did a nationwide cohort study using data obtained from the French National Health Data System (Système National des Données de Santé). We included all people aged 15 years or older, who initiated PrEP in primary care between June 1, 2021, and Dec 31, 2022. We estimated the number of PrEP initiations per month over the period, and the characteristics of people initiating PrEP and prescribers, and PrEP use.

FINDINGS

13 500 individuals initiated PrEP in primary care during the study period. The mean number of PrEP initiations increased from 654 (SD 64) per month between July and December, 2021, to 783 (SD 86) per month between July and December, 2022. Individuals initiating PrEP were predominantly male (12 996 [96·3%] of 13 500 individuals) with a mean age of 36 years (SD 11·8), who lived in large urban areas (9581 [71·0%]). 1012 (7·5%) of 13 500 individuals were socioeconomically disadvantaged. Of the 5125 PrEP initiation prescribers, 4542 (88·6%) were general practitioners (GPs), and 4713 (44·7%) of 10 525 were the patient's family practitioner. In the 6 months after PrEP initiation, 6216 (70·8%) of 8783 PrEP initiators had at least one monthly renewal (mean 3·3 renewals [SD 1·7]). 11 961 (82·4%) of 14 507 renewals were made by the same practitioner who had initiated PrEP, and this proportion was higher when the prescriber who had initiated PrEP was the family practitioner (6225 [92·5%] of 7135 renewals).

INTERPRETATION

Although the number of PrEP initiations in primary care steadily increased over the study period, the profile of users was unchanged when compared with before extension. The high proportion of PrEP initiations not prescribed by family practitioners highlights potential barriers to sharing sexual health concerns with the family practitioner. Extending PrEP to women, individuals who are socioeconomically disadvantaged, and all those who might benefit from it will require increased awareness among target audiences and practitioners.

FUNDING

French National Agency for Medicines and Health Products Safety.

Pre-exposure prophylaxis program in the Community of Madrid: Two years of experience

INTRODUCTION

Pre-exposure prophylaxis (PrEP) against the human immunodeficiency virus (HIV) is an effective and safe preventive measure. However, it has not reached all target users who could benefit from it. The study aimed to understand the sociodemographic, clinical and behavioral baseline characteristics of PrEP users. As a secondary objective, the use of concomitant medication and drug consumption were described.

METHODOLOGY

Observational, retrospective and descriptive study of the sociodemographic, clinical and behavioral characteristics of the users who were included in the PrEP program of the Community of Madrid during the first two years of experience.

RESULTS

Two thousand two hundred fifty-six PrEP users were included, 99.0% men, with a mean age of 36.9 years (SD 8.68). 33.1% presented a sexually transmitted infection (STI) on the first visit, highlighting chlamydiasis and rectal gonococci. 70.4% reported using drugs associated with sex, and 42.4% participated in chemsex sessions in the last 3 months. A high percentage of users with concomitant medication was observed (37.6%), highlighting drugs related to mental health and alopecia.

CONCLUSIONS

A multidisciplinary approach is required to cover all the needs of PrEP users, including mental health evaluation measures and addiction treatment with the clinical approach.

Non-Consensual Sex and Help-Seeking Behavior Among PrEP Users in Belgium: Findings from an Online Survey

Non-consensual sex poses a threat not only to sexual health but also to mental and physical health in general. HIV pre-exposure prophylaxis (PrEP) users might be particularly vulnerable to non-consensual sex because of interplaying factors such as mental health disorders, a high number of sex partners, engagement in chemsex, and the widespread use of dating apps. The objectives of this study were to assess the occurrence of non-consensual sex, its associated factors, and related help-seeking behavior among PrEP users. We analyzed data from an online survey among PrEP users in Belgium (09/2020-02/2022). Almost one in five participants (34/187, 18.2%) reported having ever experienced non-consensual sex. The most reported form was having sex against one's will, followed by having been given drugs against one's will, and having had sex without a condom against one's will. The vast majority of those who had experienced non-consensual sex (29/34, 85.3%) did not seek help afterward, mostly due to a lack of perceived need (21/29, 72.4%). Reported barriers to seeking help were shame (6/29, 20.7%) and lack of awareness of help services (3/29, 10.3%). Having experienced non-consensual sex in the past five years was associated with younger age and suicidal ideation in a multivariable logistic regression model. We conclude that addressing barriers to non-consensual sex help services is crucial to maximize their use and minimize the consequences of non-consensual sex experiences. PrEP consultations also represent an opportunity to offer such help given PrEP users are already familiar with these PrEP services and engaged in care.

Sociodemographic and clinical follow-up profile of transgender people accessing pre-exposure prophylaxis for the risk of HIV transmission in São Paulo, Brazil (2018-2021)

OBJECTIVE

To describe the sociodemographic and clinical follow-up profile of the use of pre-exposure prophylaxis (PrEP) of HIV among transgender people receiving care at a reference health service for sexually transmitted infections and HIV/AIDS in São Paulo, the capital city of São Paulo state, between 2018 and 2021.

METHOD

This was a descriptive study with an analysis of sociodemographic data, reasons for seeking PrEP , discontinuation of use and experiences of clinical follow-up. Descriptive statistics were used.

RESULTS

Among the 53 individuals, the majority were mixed-race (n= 25), transgender women (n= 48), heterosexual (n= 38) and had more than 11 years of study (n= 22). There was a decrease in follow-up visits (n= 14 to n= 3) after the second medical consultation.

CONCLUSION

It is necessary to develop strategies to increase PrEP dispensing and continuation among transgender people, especially among Black people and those with lower level of education.

MAIN RESULTS

The majority of pre-exposure prophylaxis (PrEP) users were young, mixed-race, educated transgender women, reflecting a portion of the transgender population with access to healthcare. The discontinuation of clinical follow-up, especially after the second medical consultation, requires attention.

IMPLICATIONS FOR SERVICES

Individualized strategies should be prioritized to improve the dispensing of PrEP and clinical follow-up for both transgender men and transgender women.

PERSPECTIVES

Further research should focus on investigation of strategies to increase PrEP dispensing and clinical follow-up for transgender people, with an emphasis on transgender men, Black people and those with lower level of education.

PrEP Method Switching: Will it Yield Greater Coverage of HIV Protection? Applying Lessons Learned from Family Planning to Guide Future Research in the Context of PrEP Choice

PURPOSE OF REVIEW

Despite the growing availability of oral PrEP, coverage remains suboptimal. Through the introduction of additional PrEP methods, including vaginal rings and long-acting injectable formulations, health systems globally are on the cusp of offering PrEP methods that vary by route of administration, efficacy, and frequency of use. With PrEP choice, it will be important to explore PrEP use patterns to better understand how the ability to choose and switch products affects coverage and continuation. In this review, we draw parallels with family planning (FP) by summarizing how method choice and product switching affected contraceptive coverage globally, synthesize what is known about PrEP product switching, and outline evidence gaps to help guide future research on PrEP switching in the context of choice.

RECENT FINDINGS

Decades of research in FP has demonstrated that product switching is common and can lead to more satisfaction and increases in contraceptive use. While research on PrEP product switching is nascent, findings suggest switching is common, and that providing more than one PrEP option can increase coverage. Key evidence gaps include understanding product switching in the context of full versus constrained choice, switching in the context of temporary need, and developing interventions that promote product switching for those who could benefit. Providing choice and allowing people to start, stop, and switch products according to their needs and desires is a core component of a rights-based approach to HIV prevention. More research is needed to better understand what drives use patterns, including switching, and how to leverage choice to improve coverage. Standard definitions -some of which have been proposed in this review-are needed to inform comparable measurement. Finally, there is a need to holistically frame PrEP use to acknowledge changes in need over the life course, thus making method switching a standard part of HIV prevention.

Pre-exposure prophylaxis (PrEP) use trajectories and incidence of HIV and other sexually transmitted infections among PrEP users in Belgium: a cohort analysis of insurance claims data from 2017 to 2019

BACKGROUND

Since June 2017, oral pre-exposure prophylaxis (PrEP) has been reimbursed in Belgium for people at substantial risk of HIV. To inform the national PrEP programme, we described sociodemographic characteristics of PrEP users, PrEP dispensing practices, testing for HIV and sexually transmitted infections (STIs; gonorrhoea, chlamydia and syphilis), and incidence of HIV and STIs.

METHODS

Analysis of routinely collected social health insurance claims data from all individuals who were dispensed at least one PrEP prescription between June 2017 and December 2019. Using logistic regression adjusted for age, we examined associations between sociodemographic characteristics and having been dispensed PrEP only once in the first six months of PrEP use.

RESULTS

Overall, 4559 individuals were dispensed PrEP. Almost all PrEP users were male (99.2%, 4522/4559), with a median age of 37 years (IQR 30-45). A minority were entitled to an increased healthcare allowance (11.4%, 514/4559). 18% (657/3636) were dispensed PrEP only once in the first six months of PrEP use. PrEP users younger than 25 years, unemployed, entitled to an increased healthcare allowance, and who initiated PrEP between January 2019 and June 2019 were more likely to have had no PrEP dispensing after initiation compared to their counterparts. The testing rates for bacterial STIs and HIV were 4.2 tests per person-year (95% CI 4.1-4.2) and 3.6 tests per person-year (95% CI 3.5-3.6), respectively. Twelve individuals were identified to have seroconverted during the study period, resulting in an HIV incidence rate of 0.21/100 person-years (95% CI 0.12-0.36). The incidence of bacterial STIs was 81.2/100 person-years (95% CI 78.7-83.8).

CONCLUSIONS

The study highlights challenges in PrEP persistence and a high incidence of bacterial STIs among individuals receiving PrEP. Tailored prevention support is crucial for individuals with ongoing HIV risk to optimise PrEP effectiveness. Integrated STI testing and prevention interventions within PrEP care are necessary to mitigate STI acquisition and transmission among PrEP users.

Incidence and factors associated with PrEP discontinuation in France

OBJECTIVES

HIV pre-exposure prophylaxis (PrEP) is effective in preventing HIV, but some seroconversions occur due to poor adherence or PrEP discontinuation. Our objective was to estimate the incidence of PrEP discontinuation and describe the reasons and factors associated with discontinuations.

METHODS

A retrospective cohort was conducted in three French hospitals between January 2016 and June 2022. PrEP users who attended at least twice within 6 months during study period were included and followed up until December 2022. The incidence rate of PrEP discontinuation was estimated by censoring lost to follow up individuals. Factors associated with PrEP discontinuations were identified using a multivariate Cox model.

RESULTS

A total of 2785 PrEP users were included, with 94% men and 5% transgender people. Median age was 35 years. By December 2022, 653 users had stopped PrEP (24%). The incidence rate was 10.8 PrEP discontinuations for 100 person-years (PY). The main causes of discontinuation were being in a stable relationship (32%), and not judging the treatment useful anymore (12%). Individuals who discontinued PrEP were younger [<29, HR = 1.45 (1.17-1.80)], and more likely to be women [HR = 2.44 (1.50-3.96)] or sex workers [HR = 1.53 (0.96-2.44)]. They were more likely to report PrEP side effects [HR = 2.25 (1.83-2.77)] or ≥2 sexually transmitted infections [HR = 1.87 (1.53-2.27)] during the last year.

CONCLUSION

The incidence of PrEP discontinuations was quite low compared to rates observed in other cohorts. Users who stopped PrEP were sometimes still exposed to HIV, emphasizing the need for targeted interventions to prepare and support PrEP discontinuations and limit seroconversion risk.

Preference and retention of daily and event-driven pre-exposure prophylaxis for HIV prevention: a prospective cohort in Can Tho city, Viet Nam

OBJECTIVE

Pre-exposure prophylaxis (PrEP) was introduced in Viet Nam in 2017, but data on oral PrEP preference and effective use beyond 3 months are limited. We aimed to evaluate PrEP preferences for PrEP, factors influencing uptake, choice and effective use, as well as barriers to PrEP.

METHODS

This is a prospective cohort study in Can Tho, Viet Nam. Participants who were eligible for PrEP and provided informed consent were interviewed at baseline on demographic information, willingness to pay, reasons for choosing their PrEP regimen and the anticipated difficulties in taking PrEP and followed up at 3 months, 6 months and 12 months after PrEP initiation.

FINDINGS

Between May 2020 and April 2021, 926 individuals at substantial risk for HIV initiated PrEP. Of whom 673 (72.7%) choose daily PrEP and 253 (27.3%) choose event-driven (ED)-PrEP. The majority of participants were men (92.7%) and only 6.8% were women and 0.5% were transgender women. Median participant age was 24 years (IQR 20-28) and 84.7% reported as exclusively same-sex relationship. The three most common reasons for choosing daily PrEP were effectiveness (24.3%) and unplanning for sex (22.9%). Those opting for ED-PrEP also cited effectiveness (22.7%), as well as convenience (18.0%) and easier effective use (12.0%). Only 7.8% of PrEP users indicated they were unwilling to pay for PrEP and 76.4% would be willing to pay if PrEP were less than US$15 per month. The proportion of user effectively using PrEP at 12 months was 43.1% and 99.2% in daily PrEP and ED-PrEP users, respectively.

CONCLUSIONS

ED-PrEP was preferred by more than a quarter of 23.5% of the participants and there was little concern about potential adverse events. High rates of effective use were reported by ED-PrEP users. Future research to inform implementation of PrEP in Viet Nam is needed to develop ways of measuring adherence to ED-PrEP more accurately and to understand and address difficulties in taking daily PrEP use.

Do pre-exposure prophylaxis (PrEP) users engaging in chemsex experience their participation as problematic and how can they best be supported? Findings from an online survey in Belgium

BACKGROUND

Chemsex involves the use of psychoactive drugs in a sexual context and is a growing phenomenon among men who have sex with men (MSM) and pre-exposure prophylaxis (PrEP) users. Investigating how its negative consequences can be avoided is important. The objective of this study was to explore the perceived impact of chemsex, the willingness to reduce chemsex activities and associated risks and preferred interventions to do so among PrEP users.

METHODS

We analysed data from an online survey among PrEP users in Belgium. Chemsex was assessed in two questionnaires distributed between September 2020 and January 2022.

RESULTS

A total of 326 participants completed the baseline questionnaire, and 186 the follow-up questionnaire. About one in three participants (36.5%, 119/326) reported engaging in chemsex, and half of those (49.6%, 59/119) were willing to reduce chemsex-related risks. The most preferred strategies for reducing risks were online support via an app (37.3%, 22/59) and face-to-face counselling with a health care professional (30.5%, 18/59). Among those reporting recent chemsex in the follow-up questionnaire, about one in five (21.9%, 14/64) wanted to reduce or stop chemsex activities. About 23.4% (15/64) also reported experiencing negative consequences of chemsex on their health, social or professional life.

CONCLUSION

Our findings show that one in four PrEP users engaging in chemsex experienced negative consequences of these activities and about one in five was willing to reduce or stop chemsex activities. We recommend embedding comprehensive chemsex support in the PrEP package of care and developing novel tools and interventions in order to reach maximum impact.

Putting 2-1-1 into Practice: PrEP Users' Knowledge of Effectively Starting and Stopping Oral PrEP Use

Starting and stopping oral HIV pre-exposure prophylaxis (PrEP) in a way that compromises its effectiveness should be avoided. Between September 2020 and June 2021, we assessed self-perceived and actual knowledge of effectively starting and stopping oral PrEP through an online survey among 206 PrEP users assigned male at birth in Belgium. We examined associations between incorrect start-and-stop knowledge and socio-demographics, sexual behaviour and PrEP use, using bi- and multi-variable logistic regression. The majority of men (84.9%) perceived their start-and-stop knowledge as 'very good', but only 62.1% of all men correctly indicated how to effectively start and stop with PrEP. Using PrEP daily [adjusted OR 2.12, 95% CI (1.06-4.28), p = 0.034] was significantly associated with incorrect start-and-stop knowledge. To enable PrEP users to effectively use PrEP, they need to be better informed about how to start and stop use, irrespective of the dosing regimen.

Patterns of PrEP and condom use among PrEP users in Belgium: a web-based longitudinal study

BACKGROUND

Tailoring pre-exposure prophylaxis (PrEP) service delivery is key to scaling-up PrEP uptake. Optimal implementation of tailored services requires, among other things, insights into patterns of PrEP use, sexual behaviours and condom use over time.

METHODS

Between September 2020 and January 2022, we conducted a web-based, longitudinal study among PrEP users in Belgium. In three questionnaire rounds every six-months, we assessed PrEP and condom use, and sex with steady, casual and anonymous partners in the preceding three months. Based on the patterns of PrEP use in the preceding three months, we identified distinct PrEP use categories. We investigated differences in baseline socio-demographics and sexual behaviours by PrEP use category using Fisher's exact and one-way ANOVA tests. Patterns in PrEP and condom use over time were examined using descriptive analyses and visualised in alluvial diagrams.

RESULTS

In total, 326 participants completed the baseline questionnaire, and 173 completed all three questionnaires. We identified five distinct PrEP use categories: daily (≥ 90 pills), almost daily (75-89 pills), long period (> 7 consecutive days and < 75 pills) with or without additional short period use, short period (1-7 consecutive days and < 75 pills) and no PrEP use (0 pills). During the study, percentages of individuals in each PrEP use category varied, but did not change significantly over time. At baseline, daily and almost daily users were more likely to report five or more casual sex partners, ten or more anonymous sex partners and anal sex on a weekly basis with casual or anonymous partners compared to those using PrEP for long or short periods. Up to 12.6% (n = 16/127) of participants reporting anal sex with casual or anonymous partners, indicated always using condoms and PrEP with these partners. One in three (n = 23/69) participants who reported anal sex with steady partners had condomless anal sex and did not use PrEP with these partners; with casual or anonymous partners less than 3% reported this.

CONCLUSIONS

Our findings show that there is little variation in PrEP use over time and that PrEP use was associated with sexual behaviours, which could be taken into account when designing tailored PrEP care.

Characteristics of HIV pre-exposure prophylaxis users at first PrEP counselling visit: the CSL-PrEP cohort

OBJECTIVES

Pre-exposure prophylaxis (PrEP) is effective for HIV prevention and is mostly used by men who have sex with men (MSM). The aim of this study was to describe the characteristics of a cohort of PrEP users at first PrEP counselling visits (baseline, BL).

DESIGN

Cross-sectional study of a cohort of MSM receiving PrEP (Centro San Luigi, CSL-PrEP Cohort).

SETTING

Secondary-level sexually transmitted infections (STI) centre in Milan, Italy, from May 2017 to May 2022.

PARTICIPANTS

Overall, 624 MSM PrEP users were included; most users were Caucasian (97%), attended university (64%), with a median BL age of 34.5 years.

RESULTS

Overall, 45% choose the daily-based PrEP regimen, 55% the event-based one. An increasing trend in PrEP counselling visits was observed (p=0.024). The majority had between 10 and 19 partners in the 3 months before BL and 41% were chemsex users. All had a HIV Incidence Risk Index for MSM (HIRI-MSM)>10, 54% between 20 and 29. Overall, 50% had ≥1 previous STI and 22% ≥1 BL STI. BL chlamydia (10%) was often more frequent than in the past (7%). The number of sexual partners was associated with BL chlamydia (p<0.001), gonorrhoea (p=0.002) and syphilis (p=<0.001), HIRI-MSM with chlamydia (p=0.001) and gonorrhoea (p=0.008), chemsex use with chlamydia (p=0.003) and gonorrhoea (p=0.030).

CONCLUSIONS

We observed an unbalanced access to PrEP in respect to all key populations which might benefit from PrEP, with a similar choice for event-based or daily-based regimens. High-risk behaviours and STIs were frequently observed. History of chlamydia was very frequently high in asymptomatic MSM at BL, compared with what observed before access to PrEP. High-risk behaviours and HIRI-MSM were associated with most of STIs.

Is HIV Pre-Exposure Prophylaxis among Men Who Have Sex with Men Effective in a Real-World Setting? Experience with One-On-One Counseling and Support in a Sexual Health Center in Paris, 2018-2020

HIV pre-exposure prophylaxis (PrEP) is highly effective but depends on patients' care engagement, which is often mediocre and poorly measured in real-world settings. This study aimed to assess the effectiveness of a PrEP program in a sexual health center that included accompanying measures to improve engagement. A retrospective observational study was conducted. All men who have sex with men (MSM) who initiated PrEP for the first time between 1 August 2018 and 30 June 2019 in the Fernand-Widal sexual health center, Paris, France, were included. Among the 125 MSM who initiated PrEP, the median age was 33 and most had only male partners. At initiation, 58% were considered at very high risk of HIV infection, mainly due to a history of post-exposure prophylaxis. During the first year, patients attended a median of three visits (Q1-Q3, 2-4). At 12 months, 96% (95% CI, 92.6 to 99.4) had a successful PrEP course, assessed by a novel metric. These results highlight the possibility of achieving a high PrEP success ratio among MSM in a real-world setting. The accompanying measures and one-on-one counseling by a trained counselor could explain the effectiveness of this PrEP program.