Likely impact of pre-exposure prophylaxis on HIV epidemics among men who have sex with men

Assessing the Potential for Nurse-Led HIV Pre- and Postexposure Prophylaxis in Ontario

BACKGROUND AND PURPOSE

HIV prevention efforts in Ontario require increased implementation of strategies including post- and pre-exposure prophylaxis. Access to these interventions could be improved by their provision through nurse-led models of care. We assessed nurses' readiness to deliver these interventions using a behavioral change framework.

METHODS

We distributed an online survey to nurses in every Ontario sexual health clinic, HIV clinic, and community health center between March-June 2018, to determine the level of support for nurse-led postexposure prophylaxis/pre-exposure prophylaxis; we also explored nurses' "capabilities," "opportunities," and "motivations" for providing postexposure prophylaxis/pre-exposure prophylaxis.

RESULTS

Overall, 72.7% of respondents supported implementation of both nurse-led postexposure prophylaxis and pre-exposure prophylaxis. More experienced nurses were less likely to support nurse-led postexposure prophylaxis and pre-exposure prophylaxis (adjusted odds ratio = 0.55 per decade nursing, 95% confidence interval (0.37, 0.82)). Nurses reported a high degree of knowledge of topics related to postexposure prophylaxis/pre-exposure prophylaxis, with the exception of creatinine interpretation.

CONCLUSIONS

Ontario nurses report high levels of support for nurse-led postexposure prophylaxis and pre-exposure prophylaxis and are well positioned to provide these interventions. Targeted education and implementation efforts are needed to engage these nurses in postexposure prophylaxis and pre-exposure prophylaxis delivery.

Gay Men's Relationship Agreements in the Era of Pre-exposure Prophylaxis: An Analysis of Australian Behavioural Surveillance Data

Using repeated, cross-sectional behavioural surveillance data from Australia, we assessed trends in relationship agreements and casual sex among HIV-negative and untested gay and bisexual men who had regular partners during 2013-2018. We conducted three analyses: (i) trends in relationship agreements and casual sex over time; (ii) bivariate comparisons of PrEP users and non-PrEP-users to identify factors associated with PrEP use; and (iii) multivariate logistic regression to identify factors independently associated with PrEP use. The analysis of trends over time included 21,593 men, from which a sub-sample (n = 3764) was used to compare PrEP users and non-PrEP-users. We found a large increase in agreements that allowed condomless sex with casual partners, particularly by PrEP users in relationships (nearly 40% of whom had such an agreement). A further 34% of PrEP users reported having casual condomless sex without an agreement that permitted that behaviour, while 13% of non-PrEP-users also reported condomless sex with casual partners without an agreement. PrEP use was independently associated with having agreements permitting condomless sex with casual partners, recent condomless sex with casual partners, having greater numbers of male partners, recent post-exposure prophylaxis use, having an HIV-positive regular male partner, and recent condomless sex with regular male partners. Our findings show a shift away from relationship agreements in which condomless sex was only sanctioned between regular partners.

How Male Sex Workers and Their Clients Shifted from Reluctance About HIV Pre-exposure Prophylaxis to Advocating for Its Use: A Longitudinal Mixed Methods Study

We assessed individual and collective responses to HIV pre-exposure prophylaxis ('PrEP') among a network of male sex workers and clients. From 2011 to May 2017, keyword searches on an online discussion forum identified 668 posts that referenced PrEP. We conducted four analyses: (i) discourse analysis identifying reactions to PrEP, (ii) thematic analysis constructing rhetorical strategies, (iii) content analysis comparing discursive positions and rhetorical strategies, and (iv) longitudinal analyses assessing trends over time. Forum posts adopted one of three discursive positions (reluctance, interest, advocacy), drawing upon four non-exclusive strategies (deference to experts and evidence, acknowledging personal and shared experiences, establishing philosophical arguments, engaging in speculation). Posts from sex workers were more likely than clients to be supportive of PrEP (96% vs. 42%; χ² = 18.46, p < 0.001) while over time this network moved from being predominantly reluctant about PrEP (61% of posts in 2012) to advocating for its use (65% of posts in 2017; Z = 5.01, p < 0.001).

HIV Prevention Research on Men Who Have Sex With Men: A Scoping Review of Systematic Reviews, 1988-2017

In the United States, men who have sex with men (MSM) are disproportionately affected by HIV. To identify research gaps and inform HIV prevention for MSM, we conducted a scoping review of systematic reviews using CDC's Prevention Research Synthesis database. Eligibility criteria comprised English-language systematic reviews focused on HIV prevention for MSM, published during 1988-2017, and included at least one U.S. primary study. We coded data type, subpopulations, topics, and key findings. To assess study quality, we used the Assessment of Multiple Systematic Reviews (AMSTAR). Among 129 relevant systematic reviews, study quality was high or moderate for 63%. Most common topics were sexual behavior and disease vulnerability. The most frequently mentioned MSM subgroups were HIV-positive, Black or African American, and young. Research gaps include Hispanic/Latino MSM, pre-exposure prophylaxis (PrEP), treatment as prevention, social determinants of health, health disparities, syndemics, and protective factors for sexual health.

Concomitant Utilization of Pre-Exposure Prophylaxis (PrEP) and Meningococcal Vaccine (MenACWY) Among Gay, Bisexual, and Other Men Who Have Sex with Men in Los Angeles County, California

Recent outbreaks of serogroup C meningococcal disease in Southern California have led the California Department of Public Health to recommend the quadrivalent meningococcal vaccine (MenACWY) for gay, bisexual, and other men who have sex with men (GBMSM) in Southern California. High-risk GBMSM have also been advised to utilize pre-exposure prophylaxis (PrEP) for HIV prevention. Data collected from a community-based sample of HIV-negative GBMSM in Los Angeles County (N = 476) were used in a multinomial logit regression analysis to identify patterns in MenACWY and PrEP usage and evaluate factors associated with use of both, one, or neither of these prevention methods. More than half (56%) of participants had neither been vaccinated nor used PrEP. A smaller percentage (34%) had either been vaccinated or were PrEP users, leaving 10% who had concomitant PrEP and MenACWY use. Higher education, more recent sex partners, illicit drug use, and recent receptive condomless anal sex (CAS) were significantly associated with greater odds of using both prevention methods relative to neither. Higher education, prior sexually transmitted infection diagnosis, more recent sex partners, and recent receptive CAS were significantly associated with greater odds of just PrEP use relative to neither. Higher education was the only factor significantly associated with greater odds of just MenACWY immunization relative to neither. Findings highlight important gaps in immunization among PrEP users and opportunities to screen for PrEP eligibility among GBMSM in conjunction with immunization. Public health practitioners should consider the ways in which strategies to increase PrEP and vaccine-preventable illnesses among GBMSM may complement one another.

2020, sexually transmissible infections and HIV in gay, bisexual and other men who have sex with men

This editorial accompanies a series of papers dealing with this watershed period for HIV and sexually transmissible infections (STI) infections in gay, bisexual and other men who have sex with men (GBM). We are delighted to share with you the views of some international opinion leaders on what the future may hold and what challenges lie ahead. In this issue of the Journal, authors describe current HIV and STI incidence among GBM and predict the future.

The estimated number of potential PrEP users among gay-identifying men who have sex with men in Australia

We estimated the size of the population of gay-identified men who have sex with men (gay men) eligible for PrEP in Australia under the current national PrEP guidelines. Using input indicators from the Australian Bureau of Statistics, the national representative survey Second Australian Study of Health and Relationships, and national HIV- behavioural surveillance, we calculated the size of the population of sexually active gay men and estimated a range for the number eligible for PrEP using different scenarios based on the guidelines. In 2015, an estimated 108,850 sexually-active 16-69-year-old gay men were classified as at risk of acquiring HIV in Australia. Of these men, 10,558 to 30,913 (9.7%-28.4%) were classified as being at high risk and therefore eligible for PrEP, most commonly due to recent receptive condomless intercourse with casual partners (6.1% to 15.5%), STI infections (5.4% to 10.6%) or the use of crystal methamphetamine (1.4% to 9.4%). The higher estimates included men who may have been at HIV risk for shorter time periods or with fewer partners. Australian PrEP guidelines recommend targeting PrEP to people at high HIV risk. Our estimation of potential PrEP users informed PrEP implementation in Australia. The choice of PrEP eligibility criteria, and interpretation of the guidelines, strongly affects the population estimates. In the future, higher numbers of gay men may become eligible for PrEP, because the estimates are largely defined by and follow trends in condomless anal intercourse. Our estimation methods can be adapted to other settings.

Preexposure Prophylaxis of HIV Infection: the Role of Clinical Practices in Ending the HIV Epidemic

PURPOSE OF REVIEW

The aim of this study is to summarise the recent evidence from high-income settings about providers' ability to deliver on the UNAIDS goal of at least three million people at substantial risk of HIV infection with PrEP by 2020, including awareness and knowledge about PrEP, willingness to prescribe PrEP, current levels of prescribing and service delivery models and issues.

RECENT FINDINGS

Awareness about PrEP among health providers is growing, but at different pace depending on provider type. HIV and sexual health specialists are more likely to have knowledge about PrEP than generalists, and to be willing to prescribe it, mainly because of their closer contact with people at high risk for HIV and better risk assessment skills. There is still no consensus as to who should be responsible for providing PrEP, but clearly all hands on deck will be useful in delivering on the international target of three million people at substantial risk for HIV on PrEP by 2020. Only about 5% of the target has been reached so far. Local guidance and large-scale education and information programs for clinicians will be necessary to upskill health providers. High cost of PrEP is still a major barrier for its broad implementation, even in countries were PrEP roll-out has started. Health services are facing major structural challenges due to implementation of PrEP services to a substantial volume of patients. The early implementation experiences demonstrated that PrEP can be successfully delivered across a variety of settings, and a broad range of strategies and models of care can streamline PrEP delivery. Education of the providers and PrEP cost solutions will be essential for rapid roll-out of PrEP.

Validation of participant eligibility for pre-exposure prophylaxis: Baseline data from the PRELUDE demonstration project

BACKGROUND

In Australia, pre-exposure prophylaxis (PrEP) is targeted to individuals at high risk for HIV infection. We describe the HIV risk profile and characteristics of PRELUDE participants, and evaluate the population validity of the sample in representing high-risk gay and bisexual men (GBM) eligible for PrEP.

METHODS

PRELUDE is an on-going, open-label, single-arm observational study. Participants were identified in clinics and screened for eligibility using a paper-based risk assessment tool which followed the New South Wales (NSW) PrEP guidelines. Selection was validated using an independent online behavioural survey, completed by study participants upon enrolment. Demographic information was analysed using descriptive statistics, and kappa tests were used to determine agreement between reporting of high-risk practices in the risk assessment and behavioural survey.

RESULTS

During 2014-15, 471 individuals were targeted for enrolment; 341 were assessed for PrEP eligibility and 313 were enrolled. Of these, 303 (97%) identified as GBM. Overall, 85% of GBM met at least one high-risk criterion; 68% reported receptive intercourse with an HIV-positive or unknown status casual male partner, and 37% reported methamphetamine use in the three months preceding enrolment. The remaining 15% were enrolled based on medium-risk behaviours, or at the clinicians' discretion. We found an 82% total agreement between self-reported high-risk behaviour and clinicians' categorisation of GBM as being at high risk for HIV based on PrEP eligibility criteria.

CONCLUSIONS

Behavioural eligibility criteria used by clinicians successfully identified individuals at high risk for HIV infection. This targeted approach ensures that the greatest public health and HIV prevention benefits can be derived in a setting without universal access to PrEP.