Ending the HIV Epidemic: A Plan for the United States

Estimation of HIV prevalence at the ZIP code-level in Atlanta, Georgia: Bayesian prediction modeling using passive surveillance data and social determinants of disease spreading

OBJECTIVE

This study aims to predict the number of undiagnosed HIV cases at the ZIP Code-level in Atlanta, Georgia, based on publicly available information.

STUDY DESIGN

Statistical modeling.

METHODS

We fitted a Bayesian hierarchical Binomial model to county-level estimates of the passive-surveillance-system. The denominator was the true total HIV cases arising from a Negative Binomial distribution. The trial probability, known as ascertainment probability, depended on socio-economic determinants of HIV, retained via feature-selection algorithms. Data were obtained from CDC's HIV report for End of the HIV Epidemic and the American Community Survey. The prediction model was assessed out-of-sample in Georgia counties. We combined socio-economic data with the posterior predictive distribution of the coefficients to predict the mean ascertainment probability and total HIV cases at the ZIP Code-level. These estimates were spatially smoothed and aggregated at the county-level for secondary validations.

RESULTS

The county-level model showed good mixing properties and predictive accuracy. The mean ascertainment probability calibrated to the ZIP Code-level varied from 78.4% (95% credible interval: 24.4%-99.3%) to 93.8% (95%CI: 80.6%-99.8%). Further, the predicted undiagnosed HIV cases ranged between 12 (95%CI: 6-19; ZIP Code 30322) to 1603 (95%CI 1209-1968; ZIP Code 30318).

CONCLUSIONS

Our findings provide a more complete picture of the relative burden of HIV across ZIP codes. Such information can be used by Local Health Departments to identify underserved areas and allocate resources accordingly. Furthermore, our methodological approach can be applied to complement the information obtained from passive surveillance, especially when more resource-intensive approaches are not available or are unfeasible to employ.

A review of implementation research funded by the National Institute on Drug Abuse, 2007-2023: Progress and opportunities

BACKGROUND

The ongoing and evolving overdose epidemic highlights the need to translate research results into routine clinical practice to address urgent service delivery needs. Implementation science is a relatively new discipline intended to develop systematic, replicable, scalable strategies to accelerate this translation. This article presents a comprehensive review of implementation research funded by the National Institute on Drug Abuse (NIDA).

METHODS

The study identified all NIDA-funded research grants awarded in fiscal years 2007 through 2023 in treatment services or prevention research (n = 1111) and screened them to find those with a pre-specified implementation science component (n = 248). Using the text of the grant application, two reviewers independently coded the key characteristics of each study.

RESULTS

The characteristics of these grants, and trends over time, are described, and priority gap areas are identified. NIDA's implementation research grants have demonstrated increasing rigor in design and measurement.

CONCLUSIONS

Growth in the portfolio has been driven in part by NIDA's investments in research-practice partnerships in the criminal-legal system, and by recent efforts to address the overdose epidemic.

Rejection of Federal Guidance by Southern US States and Projected Consequences for Ending the HIV Epidemic

Evidence-based HIV programming focused on populations at risk of HIV is critical for sustainable disease prevention. In response to the Tennessee Department of Health decision to reject federal HIV guidance, the present study examines the potential impact of Southern US states adopting policies that direct HIV prevention and testing efforts away from populations "disproportionately affected" (DA) by HIV toward populations "non-disproportionately affected" (NDA). Descriptive and projection analyses with publicly available data explored the influence of policies emphasizing NDA populations on HIV cases. Across the Southern US, DA populations (cisgender women, men who have sex with men, transgender persons, and people who inject drugs) represent the absolute majority (90%) of diagnosed HIV cases, whereas NDA populations (pregnant women, infants, first responders, and human trafficking victims) represent only a small proportion (2%) of diagnosed HIV cases. Estimated projections show avoidable HIV cases among DA populations in the Southern US alone could aggregate to over 32,000 by 2030 if prevention efforts exclusively concentrate on NDA populations, which approximates the current national annual incidence of 36,000 HIV cases. Prevention efforts aimed at DA populations compared with NDA populations could reduce new infections across the Southern US by 47% versus 1%, respectively, by 2030. Policies disregarding epidemiological data may hinder efforts to end the HIV epidemic, both regionally and nationally.

Designing a blockchain technology platform for enhancing the pre-exposure prophylaxis care continuum

Objectives

Pre-exposure prophylaxis (PrEP) is a key biomedical intervention for ending the HIV epidemic in the United States, but its uptake is impeded by systemic barriers, including fragmented workflows and ineffective data coordination. This study aims to design PrEPLinker, a blockchain-based, client-centered platform to enhance care to address these challenges by improving care coordination and enabling clients to securely manage their identity and PrEP-related data.

Materials and Methods

Using Houston, Texas, as a use case, we conducted a needs assessment with PrEP collaborators to evaluate existing workflows and identify barriers in the PrEP care continuum. Based on these findings, we designed PrEPinker, a blockchain-based identity framework and digital wallet using self-sovereign identity and verifiable credentials (VCs). These features enable clients to securirely control their identity data and facilitate efficient, privacy-serving data sharing across PrEP service points, such as community testing sites, clinics, and pharmacies.

Results

The needs assessment identified significant gaps in data exchange for PrEP referrals and follow-up appointments. In response, PrEPLinker was designed to incorporate decentralized identifiers-unique, secure digital identifiers that are not linked to any centralized authority-and VCs for ensuring seamless transfer of digital medical records. Preliminary usability testing with 15 participants showed that over 70% rated the interactive design positively, finding it easy to use, learn, and navigate without technical support. Additionally, more than 80% expressed confidence in using the blockchain based platform to manage sensitive health information securely.

Discussion and Conclusion

Blockchain technology offers a promising, client-centered solution for addressing systemic barriers in PrEP care by improving data cordination, security, and client control over personal health information. The design of PrEPLinker demorates the potential to streamline PrEP referrals, follow-up processes, and data managent. These advancements in data coordination and secruity could improve PrEP uptake and adherence, supporting efforts to reduce HIV transmission in Houston and beyond.

Factors driving decisions in the use of HIV pre-exposure prophylaxis: a real-world study in the United States

Background: Uptake of pre-exposure prophylaxis (PrEP) in the United States (US) remains below target, despite reported high efficacy in prevention of HIV infection and being considered as a strategy for ending new HIV transmissions. Here, we sought to investigate drivers for PrEP use and barriers to increased uptake using real-world data. Methods: Data were drawn from the Adelphi PrEP Disease Specific Programme™, a cross-sectional survey of PrEP users and PrEP non-users at risk for HIV and their physicians in the US between August 2021 and March 2022. Physicians reported demographic data, clinical characteristics, and motivations for prescribing PrEP. PrEP users and non-users reported reasons for or against PrEP use, respectively. Bivariate analyses were performed to compare characteris tics of users and non-users. Results: In total, 61 physicians reported data on 480 PrEP users and 121 non-users. Mean ± standard deviation of age of users and non-users was 35.3 ± 10.8 and 32.5 ± 10.8 years, respectively. Majority were male and men who have sex with men. Overall, 90.0% of users were taking PrEP daily and reported fear of contracting HIV (79.0%) and having at-risk behaviors as the main drivers of PrEP usage. About half of non-users (49.0%) were reported by physicians as choosing not to start PrEP due to not wanting long-term medication. PrEP stigma was a concern for both users (50.0%) and non-users (65.0%). More than half felt that remembering to take PrEP (57.0%) and the required level of monitoring (63.0%) were burdensome. Conclusions: Almost half of people at risk for HIV were not taking PrEP due to not wanting long-term daily medication and about half of current PrEP users were not completely adherent. The most common reason for suboptimal adherence was forgetting to take medication. This study highlighted drivers for PrEP uptake from physician, PrEP user, and non-user perspectives as well as the attributes needed in PrEP products to aid increased PrEP uptake.

Characterizing HIV-1 transmission by genetic cluster analysis among newly diagnosed patients in the China-Myanmar border region from 2020 to 2023

Cluster analysis of HIV sequence can provide insights into viral transmission patterns in border regions. This study aims to illuminate the HIV-1 subtype distribution and transmission dynamics among newly diagnosed individuals in Dehong prefecture, a region along the China-Myanmar border. Among 948 participants with pol gene sequences, 36 HIV-1 subtypes were identified, with URFs (18.8%, 178/948) being the dominant strain, followed by CRF01_AE (18.5%, 175/948) and CRF07_BC (10.9%, 103/948). Additionally, 287 sequences (30.3%, 287/948) were grouped into 91 clusters, 31 of which contained both Chinese and Burmese individuals. Multivariable logistic regression indicated that men who have sex with men (MSM), CD4 + cell count of 200∼499, and 500 cells/μl and above, and CRF01_AE were risk factors for entering the network. Through the Chord diagram, we found frequent transmission relationships among heterosexual China male group, especially those over 35 years of age. Additionally, the correlation between heterosexual Myanmar female group and heterosexual China male group among cross-risk groups deserved to be emphasized. Furthermore, the network exhibited a growing trend over time, with the largest active transmission cluster identified in Ruili county. In conclusion, the HIV-1 subtype landscape in Dehong has become increasingly complex, and the region has faced risks of transmission from both domestic and international sources. Targeted intervention strategies should be implemented for MSM, heterosexual Chinese middle-aged and elderly men, and heterosexual Burmese young adults to mitigate these risks. These findings provided evidence-based insights for local government to formulate coordinated transnational intervention approaches.

Integrating existing and novel methods to understand organizational context: A case study of an academic-public health department partnership

PURPOSE

In this manuscript we illustrate how implementation science (IS) researchers and practitioners can deploy and integrate existing and novel methods to develop a more comprehensive understanding of organizational context, particularly organizational routines and processes, to inform adaptation and implementation of evidence-based interventions.

METHODS

The work reported here was part of a broader investigation of how to adapt and implement a three-component combination intervention in a county health department in Mobile, Alabama. Based on pre-implementation efforts to assess local context and barriers to implementation, we first describe three approaches that can be effectively used to elucidate organizational routines and processes, followed by a description of how these approaches were applied in our study. We conclude with a discussion of lessons learned and recommendations for how these approaches can be applied and improved upon by other IS researchers.

RESULTS/CONCLUSIONS

Multiple methods used iteratively and collaboratively with implementation partners can enhance our understanding of nuanced organizational routines and better inform efforts to adapt and implement evidence-based interventions in complex organizational settings.

The effects of HIV self-testing on HIV incidence and awareness of status among men who have sex with men in the United States: Insights from a novel compartmental model

BACKGROUND

The OraQuick In-Home HIV self-test represents a fast, inexpensive, and convenient method for users to assess their HIV status. If integrated thoughtfully into existing testing practices, accompanied by efficient pathways to formal diagnosis, self-testing could enhance both HIV awareness and reduce HIV incidence. However, currently available self-tests are less sensitive, particularly for recent infection, when compared to gold-standard laboratory tests. It is important to understand the impact if some portion of standard testing is replaced by self-tests. We used a compartmental model to evaluate the effects of self-testing in diverse scenarios among gay, bisexual and other men who have sex with men (MSM) in the United States for the period 2020-2030, and to understand which scenarios maximize the advantages of self-testing.

METHODS

We introduced a novel 4-compartment model for HIV self-testing. We employed the model under different screening rates, self-test proportions, and delays to diagnosis for those identified through self-tests to determine the potential effects of self-testing on HIV incidence and awareness of status when applied to the US MSM population. We studied scenarios in which self-tests supplement laboratory-based tests, with no replacement, and scenarios in which some replacement occurs. We also examined how future improvements in self-test sensitivity may affect our results.

RESULTS

When HIV self-tests are supplemental rather than substitutes for laboratory-based testing, self-testing can decrease HIV incidence among MSM in the US by up to 10 % and increase awareness of status among MSM from 85 % to 91 % over a 10-year period, provided linkage to care and formal diagnosis occur promptly following a positive self-test (90 days or less). As self-tests replace a higher percentage laboratory-based testing algorithms, increases in overall testing rates were necessary to ensure reductions in HIV incidence. However, such needed increases were relatively small (under 10 % for prompt engagement in care and moderate levels of replacement). Improvements in self-test sensitivity and/or decreases in the detection period may further reduce any necessary increases in overall testing by up to 40 %.

CONCLUSIONS

If properly utilized, self-testing can provide significant long-term reductions to HIV incidence and improve awareness of HIV status. Ensuring that self-testing increases overall testing and that formal diagnosis and engagement in care occur promptly following a positive self-test are necessary to maximize the benefits of self-testing. Future improvements in self-test sensitivity and reductions in the detection period would further reduce HIV incidence and the potential risks associated with replacing laboratory tests with self-tests.

Disclosure and Help Seeking Related to Intimate Partner Violence Victimization, Perpetration, and Bidirectional Abuse in a National Sample of Sexual Minority Men

About one-third of sexual minority men (SMM) report intimate partner violence (IPV) victimization, and one-fourth report IPV perpetration, in their lifetime. IPV disclosure and help seeking are key processes of coping with or managing exposure to abuse. We surveyed 500 SMM residing across the United States who enrolled in project EROS (Empowering Relationships and Opportunities for Safety). In all, 201 participants reported any type of IPV in the past 6 months (including 109 who reported both victimization and perpetration); these men were then categorized as experiencing balanced bidirectional (n = 53), predominantly victimization (n = 113), and predominantly perpetration (n = 35) IPV. In each of these groups, close to one-third (25.7%-34.5%) had disclosed their IPV experience and one-fifth (13.2%-20.0%) had sought help; however, within the perpetration group, none of the 16 participants who only reported perpetration (the other 19 reported some victimization) disclosed their IPV. Group sizes allowed us to examine correlates of IPV disclosure and help seeking among the bidirectional and victimization groups, from among demographic, psychosocial, relational, and IPV characteristics, using bivariate statistics and multiple logistic regression. Greater IPV victimization was positively correlated with disclosure in both groups, and it was the lone independent correlate in multiple regression analysis (in the victimization group). Greater IPV victimization was also a strong positive and independent correlate of help seeking in multiple regression analysis within the victimization group, as was greater partner assertiveness in conflict resolution. There were no independent correlates of disclosure and help seeking within the bidirectional group. These findings highlight the need for efforts to empower SMM to seek support and services when exposed to IPV, and to do so early in the occurrence of IPV.

The role of community health workers in re-entry of people with HIV and substance use disorder released from jail: a mixed methods evaluation of a pilot study

BACKGROUND

Incarcerated individuals face high rates of mental illness, substance use disorders and communicable diseases including HIV, with increased health complications and mortality in the early post-release period. Multiple re-entry interventions linking justice-involved individuals to community resources via peer navigation have emerged, though limited data exist on the mechanics and personal impact of these approaches. This paper quantifies and evaluates a pilot study of a combined Community Health Worker (CHW)-re-entry intervention for individuals released from jail who use substances and have HIV to inform future large-scale applications.

METHODS

A mixed-methods analysis of a CHW-re-entry intervention utilized in a pilot randomized controlled trial involving people with HIV who have a history of substance (stimulant, opioid or alcohol) use in Dallas, TX was conducted using an explanatory sequential design. Quantitative assessments of the intervention measured interaction types, time spent, and topics discussed and explored associations between the "dose" of intervention and patient outcomes. Qualitative analyses of CHW field notes and end-of-study participant interviews were triangulated with quantitative findings to elucidate the intervention's impact.

RESULTS

Of the 17/31 participants assigned to the intervention, 16 interacted with the CHW on at least one occasion, and 6 successfully completed a visit with the re-entry organization. Most CHW interactions occurred by phone (66%) or in person (28%). Frequently discussed topics included substance use, housing, and physical health. On average, participants spent 7.65 h (range 0-37.18, SD = 9.33) engaged with the intervention over 6 months. Intervention dose was associated with improved HIV control, decreased stimulant use, higher rates of recidivism, and improved clinical appointment show rate. Qualitative analyses revealed key intervention components, paralleling benefits of study participation alone: outreach, nonjudgmental approach, motivation and accountability.

CONCLUSIONS

A CHW-re-entry intervention, while resource-intensive, shows preliminary promise in improving HIV and some substance use outcomes. Frequent telephone and in-person contact, with an empathetic yet goal-oriented approach, fostered participant support and motivation to address HIV and substance use. Participants reported that engagement in research provided accountability and a sense of purpose. Future studies should focus on optimizing implementation of CHW-based interventions to enhance impact on vulnerable populations.

Assessing Knowledge, Practices, and Barriers to PrEP and nPEP Prescription Among Texas Healthcare Providers

BACKGROUND

The effectiveness of pre-exposure prophylaxis (PrEP) and non-occupational post-exposure prophylaxis (nPEP) in preventing HIV is well-established, yet their use in clinical practice remains low. Healthcare providers, especially those in primary and emergency care settings, play a crucial role in adopting and implementing these prevention strategies. We conducted a statewide survey with 519 healthcare providers in Texas to assess their knowledge, practices, and barriers related to prescribing PrEP and nPEP.

METHODS

The survey collected data on demographics, clinical experience, practice type, awareness of recommended guidelines, knowledge of PrEP and nPEP, prescribing practices, and challenges encountered to prescribe these medications. We used multiple regression analysis to identify factors associated with PrEP and nPEP prescribing behavior.

RESULTS

While most providers were familiar with CDC and/or USPSTF-recommended PrEP guidelines, fewer had adequate knowledge of nPEP. Key challenges identified by providers included concerns about cost (48%), limited time (40% for PrEP and 51% for nPEP), and insufficient education or training (40% for PrEP and 35% for nPEP). Providers who were more familiar with the recommended guidelines and had greater experience in sexual health assessment were more likely to prescribe both PrEP and nPEP.

CONCLUSIONS

This study highlights the need for enhanced education and training to boost providers' knowledge and confidence in prescribing PrEP and nPEP. It also underscores the importance of addressing cost-related barriers and simplifying care processes to better integrate these HIV prevention strategies into primary and emergency care settings.

Facilitators and barriers of HIV pre-exposure prophylaxis use among four key populations in Iran

BACKGROUND

Pre-exposure prophylaxis (PrEP) significantly reduces HIV transmission, but it is not commonly prescribed in Iran. Therefore, this study aimed to identify facilitators and barriers to PrEP use among four key populations (KPs) in Iran.

METHODS

We conducted in-depth qualitative interviews with female sex workers (FSW), men who have sex with men (MSM), people who inject drugs (PWID), and sexual partners of people living with HIV (PLHIV) to obtain deep insights into the participants' experiences, beliefs, and viewpoints. We included HIV experts, including staff from the HIV control department, healthcare providers with HIV experience, health policymakers, infectious disease specialists, and university professors. We performed a content analysis to identify facilitators and barriers to PrEP implementation among KPs.

RESULTS

We interviewed seven FSW, seven MSM, four PWID, four sexual partners of PLHIV, and 18 HIV experts. The facilitator's theme emerged in four main categories, including eight different factors: 1) Individual and interpersonal factors (motivations, fear of testing positive for HIV, and safety nets and financial support), 2) Age and sex differences, 3) Organizational factors (appropriate PrEP distribution, information sharing, and receipt of high-quality services, 4) Efficacy of PrEP. The barrier's theme emerged in three main categories, including four factors: 1) Individual factors (insufficient knowledge and awareness, and fragile trust), 2) Cultural barriers, and 3) Organizational factors (inadequate infrastructure and organizational barriers).

CONCLUSIONS

We identified key facilitators and barriers to successful PrEP implementation among KPs in Iran. By addressing these barriers, Iran has an opportunity to include PrEP programs in its HIV prevention efforts for KPs.

The anxiety care continuum and its association with viral suppression among persons with HIV

OBJECTIVE

It is unclear how often anxiety is diagnosed and treated and whether anxiety treatment is associated with improved viral suppression in persons with HIV. In this study, we characterized the anxiety care continuum and its association with viral suppression in a large urban HIV clinic in the United States.

DESIGN

Observational cohort study.

METHODS

We described the anxiety care continuum by combining data on self-reported anxiety symptoms, engagement in mental health care, clinical diagnoses and prescriptions from 1967 persons receiving HIV care and treatment in Baltimore, Maryland, from 2014 to 2023. We examined cross-sectional associations with viral suppression. All analyses were stratified by sex and race/ethnicity; a secondary analysis adjusted for age, years in care, and depressive symptoms.

RESULTS

Nearly one in five patients reported mild-severe symptoms of anxiety but were not currently receiving mental health care or pharmacologic treatment for anxiety; 6% of patients reported anxiety symptoms but were receiving treatment, and 7% had been treated for anxiety that was currently in remission. The prevalence of viral suppression ranged from 87% to 89% across the anxiety care continuum except among patients with untreated moderate-severe anxiety, only 81% of whom were virally suppressed [95% confidence interval (CI): 80, 83]. In adjusted models, untreated moderate-severe anxiety remained associated with viral nonsuppression across demographic groups.

CONCLUSION

We observed a robust association between untreated anxiety and viral nonsuppression in a large urban cohort of persons with HIV. Screening for anxiety may identify patients with unmet mental health care needs who face barriers to maintaining viral suppression.

HIV Pre-exposure prophylaxis (PrEP) Modalities and Service Delivery Preferences Among Black Cisgender Emerging and Older Adult Women in Baltimore, Maryland

Background Black cisgender women are disproportionately affected by HIV across the United States (US). Moreover, emerging adults continue to be significantly affected compared to women in older age groups. Yet in 2024, Black cisgender women and emerging adult women comprise a small fraction of HIV pre-exposure prophylaxis (PrEP) users in the US. This study examined PrEP modality, service delivery, and marketing and communication preferences by age among Black cisgender women in Baltimore, Maryland. Methods Between October 2021 and April 2023, twelve Black cisgender PrEP-inexperienced emerging (18 to 29 years) and fourteen older (30 to 44 years) adult women were purposively recruited to participate in an in-depth interview. Interview topics included PrEP modality, service delivery, and marketing and communication preferences among the two currently approved modalities (oral and injectable) and the two modalities under investigation (ring and implant). Interviews were audio-recorded, transcribed verbatim, and analyzed using a combination of a deductive and inductive approach. Six follow-up member-checking interviews were also conducted. Results Emerging adult women preferred oral PrEP, but older adult women preferred long-acting injectable (LAI) forms of PrEP. Oral PrEP was preferred because it was considered the most common modality for other medications, whereas LAI was preferred because it didn't necessitate no daily administration. Emerging Black adult women reported challenges with adhering to the routine PrEP three-month follow-up period, such as transport, scheduling appointments, conflicts with school engagements, and being in a period of transition into adulthood where they experience structural changes (e.g., health insurance). Transport was the only reported challenge for older adult women for follow-up. Both age groups preferred longer follow-up periods to refill their PrEP prescriptions and to obtain PrEP from a trusted physician (e.g., OBGYN). Both groups of Black women expressed a preference for PrEP to be advertised through diverse means including social media campaigns, sexual health forums, peer groups on college campuses, and by featuring Black women in PrEP commercials. Conclusions To improve PrEP equity and initiation among current and emerging PrEP modalities, it is crucial to better integrate the lived experiences and preferences of Black cisgender women and enhance their representation in PrEP messaging.

Telehealth Challenges, Opportunities, and Policy Recommendations for Rural Older Adults Living with HIV in the United States

Over one million people in the United States (U.S.) are living with HIV. People living with HIV in the rural South experience delayed HIV treatment and increased mortality risks. Access challenges and HIV stigma exacerbate care disengagement for rural people living with HIV (PLH). This study examines the applicability and feasibility of telehealth to provide HIV care for older adults in the rural U.S. South. Semi-structured interviews were conducted with 27 key informants with expertise in HIV care and community engagement in high rural HIV burden states. Results indicate that telehealth challenges exist for older rural PLH to receive HIV care, such as lack of internet access and low technology literacy. Phone calls can be a simple and effective telehealth option for older rural PLH, as they align with their care preferences, mitigate care barriers, and show promise increasing care engagement. When warranted, complex telehealth options for older rural PLH require tailored approaches, such as portable medical instruments allowing real-time data sharing during home visits or tablet distribution from the clinic. Findings suggest that policy makers and providers support the reimbursement and use of audio-only telehealth services, expand broadband infrastructure and affordability in rural areas, and implement tailored telehealth interventions.

Claims-Based Algorithm to Identify Pre-Exposure Prophylaxis Indications for Tenofovir Disoproxil Fumarate and Emtricitabine Prescriptions (2012-2014): Validation Study

BACKGROUND

To monitor the use of tenofovir disoproxil fumarate and emtricitabine (TDF/FTC) and related medicines for pre-exposure prophylaxis (PrEP) as HIV prevention using commercial pharmacy data, it is necessary to determine whether TDF/FTC prescriptions are used for PrEP or for some other clinical indication.

OBJECTIVE

This study aimed to validate an algorithm to distinguish the use of TDF/FTC for HIV prevention or infectious disease treatment.

METHODS

An algorithm was developed to identify whether TDF/FTC prescriptions were for PrEP or for other indications from large-scale administrative databases. The algorithm identifies TDF/FTC prescriptions and then excludes patients with International Classification of Diseases (ICD)-9 diagnostic codes, medications, or procedures that suggest indications other than for PrEP (eg, documentation of HIV infection, chronic hepatitis B, or use of TDF/FTC for postexposure prophylaxis). For evaluation, we collected data by clinician assessment of medical records for patients with TDF/FTC prescriptions and compared the assessed indication identified by the clinician review with the assessed indication identified by the algorithm. The algorithm was then applied and evaluated in a large, urban, community-based sexual health clinic.

RESULTS

The PrEP algorithm demonstrated high sensitivity and moderate specificity (99.6% and 49.6%) in the electronic medical record database and high sensitivity and specificity (99% and 87%) in data from the urban community health clinic.

CONCLUSIONS

The PrEP algorithm classified the indication for PrEP in most patients treated with TDF/FTC with sufficient accuracy to be useful for surveillance purposes. The methods described can serve as a basis for developing a robust and evolving case definition for antiretroviral prescriptions for HIV prevention purposes.

Feasibility of reaching populations at high risk for HIV in community pharmacies

BACKGROUND

Growing evidence has shown feasibility for human immunodeficiency virus (HIV) prevention service integration in pharmacies, including HIV testing and screening for pre-exposure prophylaxis (PrEP). Yet, further work is needed to determine whether pharmacies can effectively reach those at increased risk of HIV transmission.

OBJECTIVE

We aimed to describe the HIV risk profiles and willingness to obtain HIV prevention services from a sample of pharmacy clients.

METHODS

This was a cross-sectional pilot study aimed to develop a culturally appropriate pharmacy-based PrEP delivery model among Black men who have sex with men. Two pharmacies were recruited from low-income, underserved communities and participants were recruited within pharmacies for screener and social and behavioral surveys. Individuals were grouped by PrEP eligibility due to sexual risk, injection drug use risk, or both, and demographic and willingness measures were compared.

RESULTS

Among 460 pharmacy clients, 81 (17.6%) would have been eligible for PrEP due to sex or injection drug use risk. Most were eligible due to sexual risk (58.0%), while a substantial proportion were eligible due to injection drug use (27.2%) or a combination of sexual and injection drug use risk behaviors (42.0%). Of these eligible, the median age was 31 years (interquartile range = 28.32) and most had ≥1 female (75.3%) or male (96.3%) partner in the past 6 months. There was high willingness to receive a free HIV test in a pharmacy (90.1%). Most were willing to screen for PrEP in a pharmacy (95.1%) despite these services not being available in the state where this study was performed. There were no differences in willingness to obtain pharmacy-based HIV prevention services across risk groups.

CONCLUSION

This study shows that pharmacies in disadvantaged areas can serve a key role in preventing and decreasing the transmission of HIV by reaching populations with high HIV burden and providing HIV prevention services.

HIV incidence in people receiving government-subsidised pre-exposure prophylaxis in Australia: a whole-of-population retrospective cohort study

BACKGROUND

HIV pre-exposure prophylaxis (PrEP) is highly effective and has been government subsidised in Australia since April, 2018. We examined HIV incidence over 5 years in a retrospective observational cohort of people who had received subsidised PrEP.

METHODS

Linked de-identified dispensing records for all government-subsidised oral PrEP, HIV antiretroviral therapy (ART), and hepatitis C treatment were used. We included all people dispensed subsidised PrEP from April 1, 2018, to March 31, 2023, and examined records up to Sept 30, 2023. Exposure was measured from date of first PrEP prescription and days covered by PrEP calculated for individuals based on quantity and date supplied. Assuming that HIV was diagnosed 30 days before ART initiation, we imputed the date of acquisition as the midpoint between the diagnosis and the later of the last PrEP prescription or 6 months before the diagnosis. We calculated HIV incidence and its predictors using Poisson regression.

FINDINGS

We included 66 206 people dispensed PrEP: 64 757 (97·8%) were men; median age was 33 years (IQR 27-43). 207 people acquired HIV, with an overall incidence of 1·07 per 1000 person-years (95% CI 0·93-1·23). Incidence was 2·61 per 1000 person-years among those dispensed PrEP once only. Using this group as a comparator, those with 60% or more days covered by PrEP had a 78·5% reduction in incidence (0·56 per 1000 person-years, p<0·0001) and those with less than 60% days covered had a 61·6% reduction (0·99 per 1000 person-years, p=0·0045). Independent predictors of HIV acquisition were a record of hepatitis C treatment (9·83 per 1000 person-years, adjusted incident rate ratio [aIRR] 8·70, 95% CI 4·86-15·56), only attending prescribers outside of areas with a high estimated prevalence of gay men (1·66 per 1000 person-years, aIRR 1·50, 1·08-2·09), age 18-29 years (1·33 per 1000 person-years, aIRR 1·56, 1·11-2·21), and earlier year of first PrEP.

INTERPRETATION

The low observed incidence of HIV among people receiving government-subsidised PrEP highlights the success of a national programme of oral PrEP scale-up in achieving sustained reduction in community HIV transmission. However, incidence varied greatly, indicating that more research is needed to understand why people were not taking PrEP at times of risk and emphasising the need for new interventions focused on this population to achieve elimination of HIV transmission. Individuals dispensed PrEP once only and less frequent users might benefit from more support.

FUNDING

None.

HIV and Syphilis Co-Screening Rates Among Patients Tested for Gonorrhea and Chlamydia at a Large, Urban Hospital

BACKGROUND

Current guidelines recommend concurrent screening for HIV and syphilis with gonorrhea and chlamydia testing. Despite this, many patients are still not screened. This study describes trends in demographics and encounter locations associated with missed opportunities for HIV and syphilis screening among patients tested for gonorrhea or chlamydia.

METHODS

This is a retrospective review of all encounters with gonorrhea or chlamydia testing in a large, urban hospital from November 1, 2018, to July 31, 2021. Demographic information and encounter location were extracted from the medical record. Encounters were categorized as including both HIV and syphilis (complete) screening, HIV screening only, or neither. Logistic regression was used to examine associations between demographics and encounter location and likelihood of complete screening.

RESULTS

There were 42,791 patient encounters, of which 40.2% had complete screening, 6.2% had concurrent HIV screening only, and 53.6% had no concurrent screening. Increasing age, female sex (adjusted odds ratio [aOR], 0.58; 95% confidence interval [CI], 0.55-0.61; P < 0.01), non-Hispanic Black race (aOR, 0.52; 95% CI, 0.49-0.55; P < 0.01), and public insurance (aOR, 0.72; 95% CI, 0.69-0.75; P < 0.01) were associated with lower odds of complete screening. Emergency department (ED) encounters were most likely to include complete screening (aOR, 3.11; 95% CI, 2.96-3.26; P < 0.01).

CONCLUSIONS

This study found that a large proportion of patients tested for gonorrhea and chlamydia had missed opportunities for HIV and syphilis screening. Significant demographic disparities were found. The emergency department was most likely to screen for both HIV and syphilis. Decreasing disparities in screening could have profound effects on the HIV and syphilis epidemics.

Barriers and Facilitators Along the PrEP Continuum of Care Among Latinx Sexual Minoritized Men and Transgender Women: A Systematic Review

Latinx cisgender sexually minoritized men (SMM) and transgender women (TW) in the U.S. are disproportionately affected by HIV. Although pre-exposure prophylaxis (PrEP) is a highly effective strategy for HIV prevention, rates of PrEP use among Latinx SMM and TW remain suboptimal. The main purpose of this systematic review was to (1) describe engagement in the various stages of the PrEP care continuum among Latinx SMM and TW, and (2) identify multilevel determinants that function as barriers or facilitators to engagement in the PrEP continuum of care for Latinx SMM and TW. This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Statement (PRISMA). Five databases (MEDLINE, CINAHL, PsycINFO, Embase, Scopus) were searched to examine the available qualitative, quantitative, and mixed method studies relevant to the research question. A total of 56 studies were included, with the majority focusing on SMM and being cross-sectional in design. Barriers included PrEP knowledge, risk perception, intersecting stigma, and structural conditions. Community resources, social support, and PrEP navigation services facilitated engagement in the PrEP continuum of care. This review highlights the complex factors that influence PrEP care engagement among Latinx SMM and TW. These findings call for comprehensive, multilevel approaches to address inequities disparities in PrEP care engagement among these groups.

Contributions of the Community-Based Organization Program Funded by the Centers for Disease Control and Prevention to Linkage to HIV Medical Care

OBJECTIVE

Linkage to HIV medical care is important in the continuum of HIV care and health outcomes for people with HIV. The objective of this analysis was to identify how the community-based organization (CBO) program contributes to linkage to HIV medical care among people with newly diagnosed HIV in the Centers for Disease Control and Prevention's (CDC's) HIV testing program.

METHODS

We analyzed HIV linkage-to-care data submitted to CDC from 2019 through 2021. Linkage was defined as confirmation that an individual attended their first HIV medical care appointment within 30 days of their HIV test date. We included in the analysis data submitted from the health department (HD) program that included 61 state and local HDs in the United States, Puerto Rico, and the US Virgin Islands and the CBO program that included 150 CBOs.

RESULTS

The CBO program linked a higher proportion of people to HIV medical care within 30 days of diagnosis (86.7%) than the HD program (73.7%). By population group, the proportion linked in the CBO program was higher than the proportion linked in the HD program among men who have sex with men (prevalence ratio [PR] = 1.13; P < .001), men who have sex with men/people who inject drugs (PR = 1.29; P < .001), transgender people (PR = 1.28; P < .001), and those reporting no sexual contact or injection drug use (PR = 1.34; P < .001). In the Cox proportional hazards model, time to linkage in the CBO program was significantly shorter than in the HD program (hazard ratio = 0.63; P < .001).

CONCLUSION

This analysis shows that the CBO program fills a vital need in linking newly diagnosed HIV-positive people to HIV medical care, which is important in the HIV care continuum and for viral suppression.

User experience with HIV molecular epidemiology in research, surveillance, and cluster detection and response: a needs assessment

OBJECTIVE

HIV molecular epidemiology (HIV ME) is a tool that aims to improve HIV research, surveillance, and cluster detection and response. HIV ME is a core pillar of the U.S. initiative to End the HIV Epidemic but faces some challenges and criticisms from stakeholders. We sought to assess user experience to identify the current needs for HIV ME.

METHODS

Users of HIV ME, including researchers and public health practitioners, were engaged via a structured survey. Needs were assessed via open-ended questions about HIV ME. Data were analyzed using reflexive thematic analysis; the concordance of results was assessed semi-quantitatively.

RESULTS

Of 90 possible HIV-ME end-users, 57 completed the survey (response rate = 63%), which included users engaged in research (n = 29) and public health (n = 28). Respondents identified current imperatives, challenges, and strategies to improve HIV ME. Imperatives included characterization of the virus, identification of HIV hotspots, and tailoring of HIV interventions. Challenges encompassed technological issues, ethical concerns, and implementation difficulties. Strategies to improve HIV ME involved improving data access and analysis, enhancing implementation guidance and resources, and fostering community engagement and support. Researchers and public health practitioners prioritized different imperatives, but similarly emphasized the ethical concerns with HIV ME.

CONCLUSION

The imperatives identified by users underscore the necessity of HIV ME, while the challenges highlight the hurdles to be overcome, including ethical concerns which emerged as a shared emphasis across user groups. The strategies outlined offer a roadmap for overcoming these challenges. These insights, drawn from user experience, present a valuable opportunity to inform the development of guidelines for the ethical application of HIV ME in research, surveillance, and cluster detection and response.

Transactional Sex, HIV, and Bacterial STIs Among U.S. Men Who have Sex with Men

INTRODUCTION

Men who have sex with men (MSM) and are engaged in transactional sex (MSM-TS) experience complex social and structural vulnerabilities that increase their HIV risk. This study aimed to estimate the prevalence of TS and associations between TS and sexually transmitted infection (STI) outcomes among cisgender MSM in the U.S.

METHODS

Using 2017-2021 data from an online survey of U.S. MSM, characteristics of MSM-TS were summarized, and adjusted prevalence ratios (aPRs) calculated for the associations between past-year TS and bacterial STI diagnosis, HIV status, and either antiretroviral or pre-exposure prophylaxis use. Analyses were conducted in 2023.

RESULTS

TS prevalence was 3.7% (n=1,848/49,539). Compared to other MSM, MSM-TS more commonly reported homelessness, being uninsured, condomless anal sex with partners of any HIV status and condomless anal sex with serodifferent partners, and illicit drug use. TS was associated with increased HIV (aPR 1.44, 95% CI 1.25-1.66) and bacterial STI prevalence (aPR 2.40, 95% CI=2.09-2.52) and lower antiretroviral therapy use (among MSM living with HIV; PR 0.92, 95% CI=0.87-0.97).

CONCLUSIONS

Structural and behavioral risks converged among U.S. MSM engaging in TS leading to greater HIV and bacterial STI prevalence in this group. HIV interventions for U.S. MSM-TS should address individual as well as structural risks, including poverty and housing instability.

Increase in Cases of Perinatal HIV Transmission in Maryland in 2022

The perinatal transmission of HIV is preventable through a regimen that includes testing of all pregnant individuals, antiretroviral treatment (ART) for the pregnant individual, prophylactic or preventative ART for the infant, and cesarean section delivery for mothers with HIV viremia at the time of delivery. Under this protocol, the United States has seen a significant decline in the perinatal transmission of HIV and achieved a perinatal HIV transmission rate of 0.9% in 2019. However, despite this progress nationally and after zero transmissions in 2021, Maryland recorded 6 cases of perinatal HIV diagnoses in 2022. Each of the 3 major referral centers for pediatric HIV patients in Maryland reported 2 new cases in 2022. A root cause analysis of the cases identified risk factors including delayed entry into perinatal and HIV care, premature birth, maternal adherence challenges in the setting of substance use and other adverse social determinants of health, and failure to diagnose maternal HIV infection in a timely way. All patients were successfully linked to care and initiated on ART. Multiple factors contributed to the 2022 increase in cases of perinatal HIV in Maryland. To achieve and then sustain the elimination of perinatal HIV transmission, the constancy of systems that eliminate barriers for all pregnant people to access testing, prevention, and treatment is critical.

Prolonged release and antiviral efficacy of HIV fusion inhibitor LP-98-loaded microspheres in rhesus macaques

Non-adherence to antiretroviral treatment is a critical obstacle to effectively managing the progression of AIDS and reducing transmission and mortality rates. A promising strategy to address the clinical disadvantages of user-dependent dosing and decrease medication frequency is the development of long-acting antiretrovirals. In this study, we fabricated PLGA microspheres (MS) incorporating the lipopeptide LP-98 (LP-98-MS), which has previously exhibited potent anti-HIV efficacy. Our findings demonstrate that a single-dose injection of LP-98-MS in SHIV-infected rhesus macaques resulted in sustained and gradual release, maintaining antiviral effects at least 28 days. Notably, a single administration of LP-98-MS provided more than 28 days of sustained release, resulting in high-level pre-exposure prophylaxis (PrEP) for rhesus macaques, even providing complete protection when exposed to repeated intravaginal and intrarectal SHIV challenges. Overall, LP-98-MS holds significant potential in reducing medication frequency and shows promising prospects for further development.

Innovation and implementation determinants of HIV testing and linkage-to-care in the U.S.: a systematic review

OBJECTIVE

To identify innovation and implementation determinants of HIV testing, diagnosis, and linkage-to-care in the U.S.

DATA SOURCES AND STUDY SETTING

Between November 2020 and January 2022, a broad search strategy was employed in three literature databases: Ovid MEDLINE, PsycINFO, and Web of Science.

STUDY DESIGN

A systematic review guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) statement.

DATA COLLECTION/EXTRACTION METHODS

A team of master's and Ph.D.-level researchers screened eligible studies against the inclusion criteria and extracted the data using COVIDENCE software in pairs with consensus performed by a senior member of the team. Barriers and facilitators were extracted and analyzed according to the Consolidated Framework for Implementation Research (CFIR). Frequency of determinants across studies was mapped according to CFIR, valence, study design, delivery setting, unit of analysis, population of interest, region of the U.S., and year.

RESULTS

We identified 1,739 implementation and innovation determinants from 186 articles. Most determinants were for HIV testing rather than linkage-to-care. Most determinants were identified in the inner setting and individuals domains of CFIR, with the fewest identified in the process and innovations domains. Determinants of providers were only slightly more frequently identified than determinants of recipients. However, determinants of organizations and systems were rarely identified.

CONCLUSION

This review provides a synthesis of innovation and implementation determinants of HIV testing and linkage-to-care using the most-cited implementation science (IS) framework, CFIR. This synthesis enables the larger field of HIV science to utilize IS in efforts to end the HIV epidemic and positions IS to consider the application of IS frameworks to fields like HIV.

Reasons for not seeking alcohol treatment among a sample of Florida adults with HIV who perceived the need for treatment

BACKGROUND

A minority of people who need alcohol treatment receive it. Unhealthy alcohol use is common among people with HIV (PWH) and can lead to negative health outcomes. The aims of this multi-methods study are to (1) quantitatively describe the prevalence, psychosocial characteristics, and demographic traits of a sample of PWH currently receiving HIV care in Florida who had a self-reported need for alcohol treatment but did not seek care and (2) qualitatively explore reasons why PWH did not seek treatment.

METHODS

PWH enrolled in the Florida Cohort Study between October 2020 and February 2023 who had drinking history (N = 487) completed a cross-sectional survey that asked if there was a time when they recognized they needed help for their drinking but did not seek it. If yes, they were asked an open-ended follow-up question about reasons why they did not seek care. Demographic and behavioral differences between those who did and did not endorse a time when they needed alcohol treatment were determined using multivariable logistic regression, while qualitative data were analyzed with thematic analysis based in the Social-Ecological Model to assess reasons for not seeking care at the individual, social, and systems levels.

RESULTS

A quarter of PWH (n = 129) with lifetime drinking indicated a time they needed care but did not seek it. Patients who endorsed a time where they perceived the need for treatment but did not seek it were more likely to endorse current at-risk drinking and a history of ever trying to reduce their drinking or formally seek professional alcohol treatment. The most common reasons participants did not seek care were individual level factors and included shame, denial, fear, wanting to do it on their own, not feeling ready, and not wanting to seek care.

CONCLUSIONS

PWH experienced barriers largely at the individual level that prevented them from seeking alcohol treatment despite a recognized need, though many eventually sought care. Providers and public health professionals should consider helping to address various barriers, particularly internal barriers, when designing interventions to help PWH seek care.

An observational cohort study evaluating PrEP reach, engagement and persistence through a community-based mobile clinic in Miami-Dade County, Florida

INTRODUCTION

Barriers to pre-exposure prophylaxis (PrEP) access have limited its reach to priority populations. Community-based mobile clinics have potential to broaden PrEP engagement. We evaluated reach and persistence for fixed and mobile clinic cohorts in Miami-Dade County, Florida.

METHODS

This observational cohort study analysed data from 1896 clients engaged through our fixed or mobile clinic from August 2018 to March 2023. Services were offered at no cost to clients. The same staff and package of barrier-lowering strategies was deployed across fixed and mobile clinic sites. Chi-square and Fisher's exact test or the Kruskal-Wallis test were used to test for differences in characteristics across sites as well as across services sought. Kaplan-Meier curves were generated to evaluate persistence on PrEP and in care, defined as completion of at least one clinic visit (including PrEP prescribing, for PrEP persistence, or for any reason, for persistence in care) within 24 weeks of the prior visit. Cox proportional hazards models were used to evaluate risk factors for discontinuation of PrEP or clinic care by 48 weeks by gender, race, ethnicity, insurance status and site.

RESULTS

The fixed and mobile clinics reached 781 and 1109 clients, respectively, during the study period. The median client age was 35 years; the majority (70.4%) of clients were cisgender men, identified as Hispanic/Latino (62.5%) and were men who have sex with men (54.5%). The mobile clinic extended reach to a higher proportion of cisgender women (32.1% mobile vs. 12.9% for fixed clinic), Black clients (34.5% vs. 13.1%) and older clients (median 37 vs. 33 years) compared with the fixed setting. Uninsured individuals, men and those who initiated services in the mobile clinic were more likely to continue PrEP to 48 weeks (HR: 1.20, p = 0.01; HR: 2.02, p<0.01; HR: 1.68, p<0.01, respectively). Persistence did not differ by race or ethnicity.

CONCLUSIONS

A mobile clinic strategy for PrEP engagement can increase reach to key populations underrepresented in HIV prevention care including cisgender women and Black clients. Persistence in PrEP was increased for the mobile clinic cohort, suggesting an additional benefit to this modality beyond other barrier-lowering strategies employed in our fixed and mobile clinics.

Interest in and Willingness to Use PrEP: A Cross-Sectional Study of Individuals with Problematic Substance Use Residing in a High HIV Prevalence Jurisdiction

Although it is an effective HIV prevention method, pre-exposure prophylaxis (PrEP) is underutilized in the Southern US. Many people who use drugs (PWUD) have increased susceptibility to HIV which could be lessened by using PrEP. Potential barriers to PrEP use include lack of awareness of PrEP, low knowledge about HIV prevention, low self-efficacy for HIV prevention, inaccurate risk perceptions, and anticipated stigma. The current study examined predisposing, enabling, and reinforcing factors that may predict interest in PrEP. The purpose of the current study was to explore factors associated with interest in and willingness to use daily oral and long acting injectable PrEP among sexually active adult PWUD. The data were collected from adult participants (n = 270) residing in Harris County, TX, who self-reported problematic substance use and who reported oral, anal, or vaginal sex in the six months prior to completing the survey. The survey was distributed and completed online via Qualtrics Panels in March of 2022 and included measures of PrEP and HIV knowledge, PrEP stigma, sexual health self-efficacy, experiences of discrimination, health literacy, and medical mistrust. The majority of participants reported circumstances or behaviors that increased their susceptibility to HIV. Findings indicated that PrEP user stereotypes and PrEP anticipated disapproval by others were associated with interest in using daily oral PrEP and willingness to use long acting injectable PrEP. These results provide insight into reasons for low PrEP uptake among PWUD who live in a high HIV prevalence jurisdiction. Implications for HIV prevention intervention are discussed.

Longitudinal Impacts of Medicaid Expansion and Social Determinants of Health on PrEP Prevalence and PrEP-to-Need Ratio (PNR)

Despite its efficacy, pre-exposure prophylaxis (PrEP) for HIV has a low uptake, with many disparities remaining. This study aimed to assess the impact of Medicaid expansion and social determinants of health (SDOH) on PrEP prevalence and PrEP-to-need ratio (PnR) using county-level data from 2012 to 2022. Differences-in-differences regressions indicated that Medicaid expansion is associated with increased PnR but not PrEP prevalence. Linear regressions were conducted to evaluate the impact of county-level SDOH on PrEP outcomes. Rurality was associated with lower PnR and PrEP prevalence. Racial disparities were present, with areas with greater concentrations of non-Hispanic Black populations having lower PrEP prevalence and PnR. Greater concentrations of Hispanic populations were associated with lower PnR. Income inequality, socioeconomic status vulnerability, and primary care physician concentration were all associated with higher PnR. Medicaid expansion supports increasing PrEP use in the areas of greatest need. Efforts should be made to improve PrEP access, particularly in areas with high SDOH vulnerabilities.

A Qualitative Study of Transportation-Related Barriers to HIV Care in South Carolina

OBJECTIVES

Addressing structural barriers to care for people living with human immunodeficiency virus (HIV) in the southern United States is critical to increase rates of viral suppression and to reduce existing HIV disparities. This qualitative study aimed to describe transportation-related barriers experienced by people living with HIV in South Carolina, understand perceived effects of transportation vulnerability on HIV care, and explore strategies used by individuals to overcome transportation-related challenges.

METHODS

We conducted semistructured interviews with 20 people living with HIV from South Carolina who were either reengaging in HIV care after a prolonged absence (>9 months) or in care but with a detectable viral load (ie, >200 copies/mL). All people living with HIV reported transportation vulnerability. A deductive/inductive approach was used to identify transportation-related barriers perceived to negatively affect HIV care. We also identified strategies and resources described by people living with HIV as helpful in addressing transportation challenges.

RESULTS

Participants described a range of transportation-related barriers to HIV care, including lack of access to reliable, safe, and affordable transportation, as well as stigma due to HIV and socioeconomic statuses. These barriers were reported to negatively affect engagement in care and worsen both physical and mental health. Participants indicated flexible clinic policies and instrumental support from family and friends were useful in overcoming barriers.

CONCLUSIONS

This study offers insight for the development of transportation interventions to improve equitable access to HIV care for people living with HIV in South Carolina. It also calls attention to the ways in which transportation vulnerability, HIV-related stigma, and disability status intersect to create unique challenges for some people living with HIV.

Clinical pharmacology in adolescent transgender medicine

Adolescent transgender medicine is a growing clinical field. Gender-affirming medications for transgender youth may include gonadotropin-releasing hormone (GnRH) agonists, gender-affirming hormones or both. To evaluate the potential effects of GnRH agonists (puberty suppression) on pharmacokinetic processes for transgender youth, we searched PubMed from inception to May 2024 for publications on the effects of GnRH agonists on drug absorption, distribution, metabolism or excretion for transgender adolescents or effects on hormones (including gonadotropins, adrenal androgens, sex steroids) that are associated with changes in drug metabolism during puberty in the general adolescent population. No publications discussed the effects of GnRH agonist treatment on pharmacokinetic processes for adolescent transgender people. Sixteen publications observed marked decreases in gonadotropins and sex steroids for both adolescent transgender men and adolescent transgender women and slight effects on adrenal androgens. During GnRH agonist treatment, changes in body composition and body shape were greater for adolescent transgender people than for cisgender adolescent people. Further research is needed to better understand the effects of GnRH agonists on drug metabolism and other pharmacokinetic processes for transgender adolescents receiving GnRH agonists and other gender-affirming medications.

Efficacy of Internet Recruitment and HIV Self-Testing for Diagnosing HIV Infections Among Black and Hispanic/Latino MSM and Transgender Women in 11 US States, 2020-2021

INTRODUCTION

We evaluated internet platforms for distributing HIV self-tests (HIVSTs) to Black or African American (Black) and Hispanic or Latino men who have sex with men (MSM) and transgender women (TGW).

METHODS

We recruited MSM and TGW from general interest, dating, and lesbian, gay, bisexual, and transgender platforms. Two HIVSTs were mailed to all MSM and TGW. Surveys (screening, baseline, 4-month, and results reporting) were completed online. After 4 months, participants were mailed another HIVST and a dried blood spot card. All HIVST interpretations and images of HIVST devices were reported online.

RESULTS

Of 2093 MSM and 102 TGW, most were recruited through general interest and dating platforms. Over 50% were 18-29 years old, most identified as gay or bisexual. Overall, 45% had not tested for HIV in the past 12 months, and 9.1% of MSM reported a positive (reactive for HIV antibodies) HIVST result, with the highest percentage among Black MSM (11.5%). Dating platforms recruited higher percentages of MSM who recorded positive results compared with MSM from general interest platforms during the intervention period (11.9% vs 5.5% (P < 0.0001)), and MSM who had never tested for HIV reported a greater percentage of positive HIVST results compared with MSM who had been tested for HIV before enrollment (16.1% vs. 7.1%; P < 0.0001). MSM were able to correctly interpret and report HIVST results. Of TGW, 7% reported a positive HIVST result.

CONCLUSIONS

Internet dating and general interest platforms can be key to increasing awareness of infection among BMSM, HMSM, and TGW persons, including those who do not use existing HIV services.

TRIAL REGISTRATION

www.clinicaltrials.gov Identifier: NCT04219878.

A hybrid type II effectiveness-implementation trial of a positive emotion regulation intervention among people living with HIV engaged in Ryan White Medical Case Management: protocol and design for the ORCHID study

BACKGROUND

The Ryan White Medical Case Management System, which serves more than half of people living with HIV (PLWH) in the USA, is an opportune setting for identifying and addressing depression among PLWH. A growing body of research suggests that interventions that promote positive emotion may lessen symptoms of depression and improve physical and psychological well-being among people experiencing a variety of health-related stress, including living with HIV. Research on how best to integrate standardized mental health screening and referral to evidence-based interventions in Ryan White Medical Case Management settings has the potential to improve the health and wellbeing of PLWH.

METHODS

This mixed-methods study will enroll up to N = 300 Ryan White clients who screen positive for depressive symptoms in ORCHID (Optimizing Resilience and Coping with HIV through Internet Delivery), a web-based, self-guided positive emotion regulation intervention. The study will be conducted in 16 Ryan White Medical Case Management clinics in Chicago, IL. Following pre-implementation surveys and interviews with Medical Case Managers (MCMs) and Supervisors to develop an implementation facilitation strategy, we will conduct a hybrid type 2 implementation-effectiveness stepped wedge cluster randomized trial to iteratively improve the screening and referral process via interviews with MCMs in each wedge. We will test the effectiveness of ORCHID on depression and HIV care outcomes for PLWH enrolled in the program. RE-AIM is the implementation outcomes framework and the Consolidated Framework for Implementation Research is the implementation determinants framework.

DISCUSSION

Study findings have the potential to improve mental health and substance use screening of Ryan White clients, decrease depression and improve HIV care outcomes, and inform the implementation of other evidence-based interventions in the Ryan White Medical Case Management System.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05123144. Trial registered 6/24/2021.

Development of a Machine Learning Modeling Tool for Predicting HIV Incidence Using Public Health Data From a County in the Southern United States

BACKGROUND

Advancements in machine learning (ML) have improved the accuracy of models that predict human immunodeficiency virus (HIV) incidence. These models have used electronic medical records and registries. We aim to broaden the application of these tools by using deidentified public health datasets for notifiable sexually transmitted infections (STIs) from a southern US county known for high HIV incidence. The goal is to assess the feasibility and accuracy of ML in predicting HIV incidence, which could inform and enhance public health interventions.

METHODS

We analyzed 2 deidentified public health datasets from January 2010 to December 2021, focusing on notifiable STIs. Our process involved data processing and feature extraction, including sociodemographic factors, STI cases, and social vulnerability index (SVI) metrics. Various ML models were trained and evaluated for predicting HIV incidence using metrics such as accuracy, precision, recall, and F1 score.

RESULTS

We included 85 224 individuals; 2027 (2.37%) were newly diagnosed with HIV during the study period. The ML models demonstrated high performance in predicting HIV incidence among males and females. Influential features for males included age at STI diagnosis, previous STI information, provider type, and SVI. For females, predictive features included age, ethnicity, previous STI information, overall SVI, and race.

CONCLUSIONS

The high accuracy of our ML models in predicting HIV incidence highlights the potential of using public health datasets for public health interventions such as tailored HIV testing and prevention. While these findings are promising, further research is needed to translate these models into practical public health applications.

Insights into the molecular network characteristics of major HIV-1 subtypes in developed Eastern China: a study based on comprehensive molecular surveillance data

PURPOSE

This study aimed to conduct a comprehensive molecular epidemiology study of major HIV-1 subtypes in developed Eastern China (Zhejiang Province).

METHODS

Plasma samples and epidemiological information were collected from 4180 newly diagnosed HIV-1 positive patients in Zhejiang Province in 2021. Pol sequences were obtained to determine the subtypes via multiple analytical tools. HIV-1 molecular networks were constructed on the basis of genetic distances to analyze transmission patterns among major subtypes. Furthermore, the birth-death skyline (BDSKY) model was utilized to estimate the transmission risks associated with large clusters (LCs).

RESULTS

In 4180 patients, 3699 (88.49%) pol sequences were successfully obtained and classified into four subtype groups. In the networks under an optimal genetic distance of 0.01 substitutions/site, the majority of links (74.52%, 1383/1856) involved individuals within the same city, highlighting the predominant role of local transmission in driving the HIV-1 epidemic. In the CRF07_BC, CRF01_AE, and others/URFs networks, men who have sex with men (MSM) were the primary sexual transmission population, with the younger MSM group (< 30 years old) exhibiting higher linkage frequencies. Within the CRF08_BC network, 93.98% of individuals were infected primarily through heterosexual contact and had a significantly greater risk of localized clustering than other subtypes did. Moreover, fifteen identified LCs were predominantly transmitted through commercial heterosexual contact (CHC), exhibiting localized clustering and high potential for sustained diffusion.

CONCLUSIONS

Overall, our findings reveal a diverse and heterogeneous distribution of HIV-1 subtypes in Zhejiang Province, with noticeable variations in hotspots across different geographic areas and populations.

Implementation and Evaluation of a Home-Based Pre-Exposure Prophylaxis Monitoring Option: Protocol for a Randomized Controlled Trial

BACKGROUND

HIV prevention is a public health priority. Despite progress in recent years, pre-exposure prophylaxis (PrEP) use remains suboptimal especially among groups disproportionately impacted by new HIV diagnoses such as gender and sexual minorities of color. Multiple barriers including a lack of PrEP providers and challenges with attending quarterly monitoring visits contribute to low PrEP uptake and retention. Home-based PrEP (HB-PrEP) services could reduce stigma, increase convenience, expand health system capacity for PrEP care, and improve PrEP retention.

OBJECTIVE

Home Option Testing for PrEP (HOT4PrEP) is a hybrid randomized controlled trial (RCT) that aims to examine whether HB-PrEP care is acceptable to PrEP users, feasible to implement in a sexual health clinic setting, and impacts PrEP retention.

METHODS

The RCT will recruit 458 persons currently taking or soon to initiate PrEP at a sexual health clinic in Seattle, Washington, and randomize them to continue the standard of care or have the option to use HB-PrEP for 2 of 3 triannual PrEP follow-up visits. Participants in the intervention arm will be sent home kits containing gonorrhea and chlamydia swabs and Tasso devices for blood self-collection. The primary outcome is PrEP retention between groups at 20 months; secondary outcomes include user satisfaction and acceptability, feasibility, self-reported PrEP adherence, and sexually transmitted infection (STI) incidence. Interviews with PrEP users and clinic staff will elucidate barriers and facilitators of implementation.

RESULTS

The HOT4PrEP RCT began enrolling in March 2022, was on hold during the height of the US mpox epidemic, then resumed enrollment in December 2022. Of the first 100 enrollees, the median age is 34 years, and most are cisgender gay men (89/100, 89%) with at least some college education (91/100, 91%). Among the 49 participants randomized to the HB-PrEP option, 33 (67%) chose to self-collect samples at home at least once, of whom 27 (82%) successfully returned test kits for HIV and STI testing. Primary PrEP retention and qualitative analyses are ongoing.

CONCLUSIONS

Implementation of HB-PrEP into a high-volume sexual health clinic seems to be feasible and acceptable to early RCT enrollees. This strategy has the potential to address individual and systemic barriers associated with initiating and persisting on PrEP, such as increasing sexual health agency and expanding clinical capacity to serve greater numbers of PrEP users.

TRIAL REGISTRATION

ClinicalTrials.gov NCT05856942; https://clinicaltrials.gov/study/NCT05856942.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/56587.

"That's My Girl; I love her": The Promise of Compassionate, Inclusive Healthcare for Black Transgender Women to Support PrEP Use

There are significant disparities in HIV pre-exposure prophylaxis (PrEP) use that disproportionately impact Black transgender women. Medical mistrust and discriminatory experiences in healthcare settings have been identified as critical barriers to equitable PrEP implementation. This qualitative study examines Black transgender women's experiences in healthcare to better understand how patient-provider relationships can help overcome the challenges brought on by medical mistrust. We interviewed 42 Black transgender women about their experiences with healthcare and PrEP access. Data were analyzed using inductive thematic content analysis to develop the following themes: (1) historical and ongoing marginalization and exclusion from healthcare remains a barrier to PrEP use; (2) Many providers continue to be unprepared to prescribe PrEP; (3) Providers can act as important advocates and sources of support; and (4) Compassionate, trusting patient-provider relationships can facilitate PrEP use. Our results highlight the importance of supportive and positive patient-provider relationships and demonstrate how providers can build trusting relationships with Black transgender women to help overcome barriers to healthcare and PrEP use.

Progress in Eliminating Perinatal HIV Transmission in the Metropolitan DC Area Between 2018-2022

BACKGROUND

The number of perinatal HIV cases have continued to decline since the United States achieved the goal of perinatal HIV elimination in 2019. We aimed to evaluate dynamics in perinatal HIV transmission in the metropolitan District of Columbia (DC) area during 2018-2022.

SETTING

Children's National Hospital's (CNH) is a major referral site for the metropolitan DC area, including suburban Maryland and Virginia, and evaluates >95% of HIV-exposed infants (HEI) in the region.

METHODS

A retrospective cohort study of mother-infant pairs with perinatal HIV exposure seen at CNH during 2018-2022. We describe the demographics, intrapartum/postpartum management, and outcomes among mothers and HEI.

RESULTS

We analyzed 503 HEI; most (78.9%) were at low risk for perinatal HIV. Most mothers were African or African American (87.1%) and had HIV RNA <50 copies/mL around delivery (78.1%). The proportion of HEI at high risk for perinatal HIV decreased from 28.2% to 15.5% in 2018 and 2020, respectively, but increased to 24.8% in 2022. Most HEI received postnatal antiretroviral drugs for at least 4 weeks (95.3%). Seventy-nine infants (15.7%) were born to mothers diagnosed with HIV during pregnancy. Two infants (0.4%) were diagnosed with perinatally acquired HIV.

CONCLUSIONS

We report high rates of antiretroviral drugs use among mother-infant pairs and a low rate of perinatal HIV transmission in metropolitan DC. Despite a 1.8-fold decrease in the number of high-risk perinatal HIV exposures since 2018, this rate rebounded in 2022. There remain opportunities to optimize maternal care and reduce the number of high-risk HEI.

Human Immunodeficiency Virus in the South: An Epidemic Within an Epidemic

The authors examine the HIV epidemic in the Southern United States, emphasizing its severe impact on minority and young populations. The authors highlight challenges including limited health care access, systemic racism influencing social determinants of health, and lesbian, gay, bisexual, transgender, and queer+ stigma. The South faces a critical human immunodeficiency virus (HIV) workforce shortage, especially in rural areas, and struggles with coexisting syndemics like other sexually transmitted infections and substance-use disorders. The authors describe comprehensive strategies such as Medicaid expansion, workforce enhancement, stigma reduction, and policy reforms to improve HIV prevention and treatment, emphasizing the need for a multifaceted approach to improve health outcomes for those living with HIV in the South.

Cohort profile update: the Johns Hopkins HIV clinical cohort, 1989-2023

The Johns Hopkins HIV Clinical Cohort, established in 1989, links comprehensive, longitudinal clinical data for adults with HIV receiving care in the Johns Hopkins John G. Bartlett Specialty Practice in Baltimore, Maryland, USA, to aid in understanding HIV care and treatment outcomes. Data include demographics, laboratory results, inpatient and outpatient visit information and clinical diagnoses, and prescribed and dispensed medications abstracted from medical records. A subset of patients separately consents to self-report patient-centric outcomes on standardized instruments approximately every 6 months, and another subset separately consents to contribute plasma and peripheral blood mononuclear cells to a linked specimen repository approximately annually. The cohort has cumulatively enrolled over 8000 people, with just under 2000 on average attending ≥ 1 HIV primary care visit in any given year. The cohort reflects the HIV epidemic in Baltimore: in 2021, median age was 57, 64% of participants were male, 77% were non-Hispanic Black, and 37% acquired HIV through injection drug use. This update to the cohort profile of the Johns Hopkins HIV Clinical Cohort illustrates both how the population of people with HIV in Baltimore, Maryland, USA has changed over three decades, and we have adapted data collection procedures over three decades to ensure this long-running cohort remains responsive to patient characteristics and research gaps in the provision of care to people with HIV and substance use.

Operationalization of Status Neutral Human Immunodeficiency Virus Care for Criminal-Legal Involved Populations

The United States has the highest number of people incarcerated in the world. Criminal-legal involved populations, including people who are incarcerated in jails and prisons and people who are under community carceral control through probation or parole are at an increased risk for human immunodeficiency virus (HIV). Increasing access to HIV testing, treatment and prevention is necessary to curb the HIV epidemic. This chapter outlines the history of HIV testing in jails and prisons and suggests a Status Neutral HIV Care Framework for improving access to HIV prevention services.

HIV and Substance Use Disorders

Over 1.2 million Americans aged 13 years and older have been diagnosed with human immunodeficiency virus (HIV). While HIV incidence has been declining since 2017, the risk of HIV acquisition and transmission persists among persons who use drugs via injection drug use and unprotected sexual intercourse associated with substance use. Untreated substance use disorder (SUD) is associated with poor adherence to HIV antiretroviral therapy, poor HIV outcomes, and increased risk for HIV acquisition. Herein, we describe the intertwined syndemic of HIV and SUD, as well as treatment strategies and evidence-based public health efforts to engage and retain persons who use drugs into care.

Telehealth Models for PrEP Delivery: A Systematic Review of Acceptability, Implementation, and Impact on the PrEP Care Continuum in the United States

Pre-exposure prophylaxis (PrEP) is pivotal in curbing HIV transmission and is integral to the national plan to end the HIV epidemic in the United States (US). Nonetheless, widespread PrEP adoption faces barriers. Telehealth delivery models for PrEP, or telePrEP, can enhance PrEP access and adherence by providing flexible care remotely. This study presents a systematic review of telePrEP programs in the US, aiming to describe model characteristics and summarize clinical, implementation, and equity outcomes. We reviewed studies published from 2012 to 2023. We included articles that described telePrEP systems in the US and measured PrEP care continuum outcomes (awareness, initiation, uptake, adherence) or acceptability of the intervention by program users. Eight articles describing six distinct telePrEP initiatives met our inclusion criteria. Studies described models implemented in community-based, academic, and commercial settings, with most programs using a direct-to-client telePrEP model. Across studies, clients reported high acceptability of the telePrEP programs, finding them easy to use, convenient, and helpful as a tool for accessing HIV prevention services. No programs were offering injectable PrEP at the time these studies were conducted. Data was limited in measuring PrEP retention rates and the reach of services to underserved populations, including Black and Latinx communities, transgender individuals, and cis-gender women. Findings underscore the potential of telePrEP to bolster the reach of PrEP care and address structural barriers to access. As telehealth models for PrEP care gain prominence, future research should concentrate on refining implementation strategies, enhancing equity outcomes, and expanding services to include injectable PrEP.

A multi-informant qualitative analysis of desired features for an mHealth tool for youth living with HIV in South Carolina

OBJECTIVE

Youth living with HIV (YLHIV) in the southern United States experience poor outcomes across the HIV care continuum and are at high-risk for virologic failure. This study used a qualitative, community-engaged approach to inform the development of a tailored mobile Health (mHealth) tool for YLHIV in South Carolina (SC).

METHODS

Semistructured qualitative interviews were conducted with YLHIV in SC (n = 16) and their HIV care providers (n = 15). Focus group discussions (FGDs) were also conducted with HIV-focused community-based organization staff (n = 23). Interviews and FGDs queried desired components for a future mHealth tool tailored for YLHIV. Data were analyzed using a team-based rapid qualitative approach.

RESULTS

Across informants, key themes emerged related to medical management of HIV, including a desire for connections with medical providers, appointment and medication reminders, and accurate HIV information. In addition, informants voiced a desire for mental health resources to be integrated into the app. Connection with HIV-positive peers also emerged as a key desire from youth informants. In terms of app design, informants emphasized the need for strict privacy practices, a youth-friendly design, compensation for use, and integration with existing healthcare systems.

CONCLUSIONS

mHealth interventions developed for YLHIV should meet the mental health and social needs of YLHIV in addition to their medical needs. In addition, the highly stigmatized nature of HIV requires careful consideration when designing digital tools-youth want their privacy prioritized, but also express strong desire for social support to help cope with the isolation and stigma of this chronic health condition.

Patient and clinic staff perspectives on the implementation of a long-acting injectable antiretroviral therapy program in an urban safety-net health system

BACKGROUND

Long-acting injectable cabotegravir plus rilpivirine (LAI CAB/RPV) has several potential benefits over daily oral formulations for HIV treatment, including the potential to facilitate long-term adherence and reduce pill fatigue. We aimed to assess facilitators of and barriers to LAI CAB/RPV implementation and delivery through the perspectives of physicians and clinical staff, and the experiences of LAI CAB/RPV use among people living with HIV (PLWH) at a Ryan-White supported safety-net clinic in North Texas.

METHODS

We conducted semi-structured interviews with recruited clinic staff (physicians, nurses, and support staff) involved with LAI CAB/RPV implementation and PLWH who switched to LAI CAB/RPV and consented to participate in individual interviews. Data were collected from July to October 2023. Our interview guide was informed by the Reach, Effectiveness, Adoption, Implementation, Maintenance (RE-AIM), and Proctor Implementation Outcomes frameworks. Qualitative data were analyzed using a rapid qualitative analysis approach to summarize key themes.

RESULTS

We recruited and interviewed 15 PLWH who transitioned to LAI CAB/RPV and 11 clinic staff serving these patients. PLWH conveyed that emotional and informational support from family or a trusted clinician influenced their decision to switch to LAI CAB/RPV. PLWH also reported that injectable treatment was more effective, convenient, and acceptable than oral antiretroviral therapy. Clinic staff and physicians reported that staff training, pharmacist-led medication switches, flexible appointments, refrigeration space and designated room for injection delivery facilitated implementation. Clinic staff cited medication costs, understaffing, insurance prior authorization requirements, and lack of medication access through state drug assistance programs as critical barriers.

CONCLUSIONS

Our study offers insights into real-world experiences with LAI usage from the patient perspective and identifies potential strategies to promote LAI CAB/RPV uptake. The barriers to and facilitators of LAI CAB/RPV program implementation reported by clinic staff in our study may be useful for informing strategies to optimize LAI CAB/RPV programs.

Enhanced Cohort Methods for HIV Research and Epidemiology (ENCORE): Protocol for a Nationwide Hybrid Cohort for Transgender Women in the United States

BACKGROUND

In the United States, transgender women are disproportionately impacted by HIV and prioritized in the national strategy to end the epidemic. Individual, interpersonal, and structural vulnerabilities underlie HIV acquisition among transgender women and fuel syndemic conditions, yet no nationwide cohort monitors their HIV and other health outcomes.

OBJECTIVE

Our objective is to develop a nationwide cohort to estimate HIV incidence, identify risk factors, and investigate syndemic conditions co-occurring with HIV vulnerability or acquisition among US transgender women. The study is informed by the Syndemics Framework and the Social Ecological Model, positing that stigma-related conditions are synergistically driven by shared multilevel vulnerabilities.

METHODS

To address logistical and cost challenges while minimizing technology barriers and research distrust, we aim to establish a novel, hybrid community hub-supported digital cohort (N=3000). The digital cohort is the backbone of the study and is enhanced by hubs strategically located across the United States for increased engagement and in-person support. Study participants are English or Spanish speakers, are aged ≥18 years, identify as transgender women or along the transfeminine spectrum, reside in 1 of the 50 states or Puerto Rico, and do not have HIV (laboratory confirmed). Participants are followed for 24 months, with semiannual assessments. These include a questionnaire and laboratory-based HIV testing using self-collected specimens. Using residential zip codes, person-level data will be merged with contextual geolocated data, including population health measures and economic, housing, and other social and structural factors. Analyses will (1) evaluate the contribution of hub support to the digital cohort using descriptive statistics; (2) estimate and characterize syndemic patterns among transgender women using latent class analysis; (3) examine the role of contextual factors in driving syndemics and HIV prevention over time using multilevel regression models; (4) estimate HIV incidence in transgender women and examine the effect of syndemics and contextual factors on HIV incidence using Poisson regression models; and (5) develop dynamic, compartmental models of multilevel combination HIV prevention interventions among transgender women to simulate their impact on HIV incidence through 2030.

RESULTS

Enrollment launched on March 15, 2023, with data collection phases occurring in spring and fall. As of February 24, 2024, a total of 3084 individuals were screened, and 996 (32.3%) met the inclusion criteria and enrolled into the cohort: 2.3% (23/996) enrolled at a hub, and 53.6% (534/996) enrolled through a community hub-supported strategy. Recruitment through purely digital methods contributed 61.5% (1895/3084) of those screened and 42.7% (425/996) of those enrolled in the cohort.

CONCLUSIONS

Study findings will inform the development of evidence-based interventions to reduce HIV acquisition and syndemic conditions among US transgender women and advance efforts to end the US HIV epidemic. Methodological findings will also have critical implications for the design of future innovative approaches to HIV research.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/59846.