Syndemic vulnerability, sexual and injection risk behaviors, and HIV continuum of care outcomes in HIV-positive injection drug users

L, Tsai AC, Purayil VP, Kumar P, Kumar R, Das C, Rajan S. The syndemic of incarceration, violence victimisation, needle/syringe sharing, & HIV infection: A population-based study of men who inject drugs in India

Background & objectives Only a few studies to date have described how violence victimisation, incarceration experience, and needle/syringe sharing synergistically interact to increase HIV risk among people who inject drugs (PWID) in India. Methods We analysed cross-sectional data on 19,902 men who inject drugs, recruited in the 2014/15 Integrated Bio-Behavioural Surveillance study of India's National AIDS Control Organisation. The outcome was human immunodeficiency virus (HIV) status. Syndemic exposures included past-year incarceration, past-year severe physical violence victimisation, and needle/syringe sharing. Regression models included covariates such as age, education, marital status, inconsistent condom use, HIV knowledge, and HIV programme exposure. We tested interactions using linear probability (additive scale) and logistic (multiplicate scale) regression models and examined causal pathways via path analysis. Results In this study, the HIV prevalence was found to be 9.9 per cent among men who inject drugs. We estimated substantial rates of needle/syringe sharing (17.8%), past-year incarceration (10.2%), and severe violence victimisation (3.8%). Among those incarcerated, 28 per cent injected drugs in prison. HIV seropositivity was associated with needle/syringe sharing [Adjusted odds ratio (aOR)=1.33; 95% Confidence interval (CI), 1.08-1.63], but not with violence victimisation or incarceration. In the logistic regression models, a significant two-way interaction was found between needle/syringe sharing and violence victimisation (semi-elasticity=0.65; 95% CI, 0.01-1.29) and a three-way interaction between needle/syringe sharing, violence victimisation, and incarceration (semi-elasticity=1.86; 95% CI, 0.51-3.20). In the linear probability regression models, we estimated a three-way additive interaction (relative excess risk of interaction=0.21; 95% CI, 0.03-0.28). Using path analysis, we estimated statistically significant indirect effects of both incarceration (b=0.02; 95% CI 0.01, 0.03) and severe violence victimisation (b=0.01; 95% CI, 0.008 to 0.02) on the HIV status, operating through their effects on needle/syringe sharing. Interpretation & conclusions Incarceration, violence victimisation, and needle/syringe sharing synergistically interacted to magnify HIV risk among men who inject drugs. These findings suggest the presence of a syndemic. Integrated interventions addressing these co-occurring conditions (e.g., needle/syringe exchange in prisons, violence prevention) may be necessary to effectively reduce HIV transmission among PWID in India.

A systematic comparison of additive and interaction approaches to modeling the effects of syndemic problems on HIV outcomes in South Africa

Much of the research on the effects of syndemics on HIV outcomes has utilized an additive approach. However, interaction effects may better account for syndemic synergy than an additive approach, but it remains difficult to specify interaction effects without empirical guidance. We sought to systematically compare additive and interaction effects approaches to modeling the effects of syndemic problems on antiretroviral therapy (ART) using empirically specified interaction terms. Participants were 194 people with HIV (PWH) who received HIV care in Khayelitsha, South Africa. In a series of linear regression models, we examined ten syndemic problems: depression, alcohol use, intimate partner violence (IPV), post-traumatic stress, social anxiety, substance use, food insecurity, poverty, housing instability, and structural barriers to care. Depression, substance use, and food insecurity were selected for interaction terms based on a prior network analysis, which found these problems to be most central. The additive models did not produce statistically significant findings. However, the interaction effects models yielded significant interaction terms in both the full model and a parsimonious model. There was a statistically significant effect of the interaction between depression and food insecurity on ART adherence (b = 0.04, Robust SE = 0.02, 95%CI [0.001-0.08], p = .012). This pattern of results was replicated in the parsimonious model. Findings suggest that when feasible, interaction effects approaches may be a helpful syndemic modeling technique. Results may inform future intervention targets, such as depression and food insecurity, and the importance of addressing both structural and psychosocial syndemic problems.

Syndemic Theory and Its Use in Developing Health Interventions and Programming: A Scoping Review

PURPOSE OF REVIEW

The central tenet of syndemics theory is that disease interactions are driven by social factors, and that these factors have to be understood in order to reduce the health burdens of local populations. Without an understanding of the theory and how it is being put into practice, there is a strong possibility of losing the potential for syndemic theory to positively impact change at community and individual level.

METHODS

Following an initial database search that produced 921 articles, we developed a multi-stage scoping review process identifying invention studies that employ syndemic theory. Inclusion was defined as the presence of healthcare interventions examining multiple social-biological outcomes, refering to a specific (local) at risk population, developing or attempting to develop interventions impacting upon multiple health and/or social targets, and explicit employment of syndemic theory in developing the intervention.

RESULTS

A total of 45 articles contained a substantial engagement with syndemic theory and an original healthcare intervention. However, only eleven studies out of all 921 articles met the inclusion criteria.

DISCUSSION/CONCLUSION

It is strongly suggested that when employing syndemic theory researchers focus close attention to demonstrating disease interactions, providing evidence of the social drivers of these disease interactions, and constructing interventions grounded in these analytical findings. We conclude that although frequently referred to, syndemic theory is rarely employed in its entirety and recommend that interventions be developed using a more thorough grounding in this important and powerful theory.

A Transdiagnostic Treatment to Improve Biomedical and Syndemic Outcomes in People Living With HIV

People living with HIV (PLWH) experience a range of co-occurring psychosocial stressors, mental health symptoms, and structural barriers (e.g., "syndemics") that can impair their ability to adhere to medical recommendations for treatment. This has consequences for their health and the health of others as nonadherence increases the likelihood of unsuppressed HIV viral load, and therefore the ability to transmit HIV to others. Transdiagnostic treatment, or treatment not focused on a single mental health condition, can efficiently address a range of mental health problems by skills training to reduce symptoms. Additionally, cognitive behavioral and problem-solving approaches can be used to address larger, structural factors by helping individuals navigate systemic challenges using evidence-based skills. This article describes the development of a transdiagnostic treatment for PLWH and illustrates the application of the treatment through case examples. This treatment might be appropriate for integration into an HIV clinic or within an outpatient setting when working with a patient who is experiencing syndemic conditions and living with HIV.

Syndemic Psychosocial Conditions among Youth Living with HIV: a Latent Class Analysis

Drug use, mental distress, and other psychosocial factors threaten HIV care for youth living with HIV (YLWH). We aimed to identify syndemic psychosocial patterns among YLWH and examine how such patterns shape HIV outcomes. Using baseline data from 208 YLWH enrolled in an HIV treatment adherence intervention, we performed latent class analysis on dichotomized responses to 9 psychosocial indicators (enacted HIV stigma; clinical depression and anxiety; alcohol, marijuana, and illicit drug misuse; food and housing insecurity; legal history). We used multinomial logistic regression to assess latent class-demographic associations and the automatic Bolck-Croon-Hagenaars method to assess HIV outcomes by class. Mean age of participants was 21 years; two thirds identified as cis male, 60% were non-Hispanic Black, and half identified as gay. Three classes emerged: "Polydrug-Socioeconomic Syndemic" (n = 29; 13.9%), "Distress-Socioeconomic Syndemic" (n = 35, 17.1%), and "Syndemic-free" (n = 142, 69.0%). Older, unemployed non-students were overrepresented in the "Polydrug-Socioeconomic Syndemic" class. Missed/no HIV care appointments was significantly higher in the "Polydrug-Socioeconomic Syndemic" class (81.4%) relative to the "Syndemic-free" (32.8%) and "Distress-Socioeconomic Syndemic" (31.0%) classes. HIV treatment nonadherence was significantly higher in the "Polydrug-Socioeconomic Syndemic" class (88.5%) relative to the "Syndemic-free" class (59.4%) but not the "Distress-Socioeconomic Syndemic" class (70.8%). Lack of HIV viral load suppression was non-significantly higher in the "Polydrug-Socioeconomic Syndemic" class (29.7%) relative to the "Syndemic-free" (16.2%) and "Distress-Socioeconomic Syndemic" (15.4%) classes. Polydrug-using, socioeconomically vulnerable YLWH are at risk for adverse HIV outcomes, warranting tailored programming integrated into extant systems of HIV care.

Smartphone and Wearable Device-Based Digital Phenotyping to Understand Substance use and its Syndemics

Digital phenotyping is a process that allows researchers to leverage smartphone and wearable data to explore how technology use relates to behavioral health outcomes. In this Research Concepts article, we provide background on prior research that has employed digital phenotyping; the fundamentals of how digital phenotyping works, using examples from participant data; the application of digital phenotyping in the context of substance use and its syndemics; and the ethical, legal and social implications of digital phenotyping. We discuss applications for digital phenotyping in medical toxicology, as well as potential uses for digital phenotyping in future research. We also highlight the importance of obtaining ground truth annotation in order to identify and establish digital phenotypes of key behaviors of interest. Finally, there are many potential roles for medical toxicologists to leverage digital phenotyping both in research and in the future as a clinical tool to better understand the contextual features associated with drug poisoning and overdose. This article demonstrates how medical toxicologists and researchers can progress through phases of a research trajectory using digital phenotyping to better understand behavior and its association with smartphone usage.

Social-spatial network structures among young urban and suburban persons who inject drugs in a large metropolitan area

BACKGROUND

Recent studies underscore the significance of adopting a syndemics approach to study opioid misuse, overdose, hepatitis C (HCV) and HIV infections, within the broader context of social and environmental contexts in already marginalized communities. Social interactions and spatial contexts are crucial structural factors that remain relatively underexplored. This study examines the intersections of social interactions and spatial contexts around injection drug use. More specifically, we investigate the experiences of different residential groups among young (aged 18-30) people who inject drugs (PWID) regarding their social interactions, travel behaviors, and locations connected to their risk behaviors. By doing so, we aim to achieve a more comprehensive understanding of the multidimensional risk environment, thereby facilitating the development of informed policies.

METHODS

We collected and examined data regarding young PWID's egocentric injection network and geographic activity spaces (i.e., where they reside, inject drugs, purchase drugs, and meet sex partners). Participants were stratified based on the location of all place(s) of residence in the past year i.e., urban, suburban, and transient (both urban and suburban) to i) elucidate geospatial concentration of risk activities within multidimensional risk environments based on kernel density estimates; and ii) examine spatialized social networks for each residential group.

RESULTS

Participants were mostly non-Hispanic white (59%); 42% were urban residents, 28% suburban, and 30% transient. We identified a spatial area with concentrated risky activities for each residential group on the West side of Chicago in Illinois where a large outdoor drug market area is located. The urban group (80%) reported a smaller concentrated area (14 census tracts) compared to the transient (93%) and suburban (91%) with 30 and 51 tracts, respectively. Compared to other areas in Chicago, the identified area had significantly higher neighborhood disadvantages. Significant differences were observed in social network structures and travel behaviors: suburban participants had the most homogenous network in terms of age and residence, transient participants had the largest network (degree) and more non-redundant connections, while the urban group had the shortest travel distance for all types of risk activities.

CONCLUSION

Distinct residential groups exhibit varying patterns of network interaction, travel behaviors, and geographical contexts related to their risk behaviors. Nonetheless, these groups share common concentrated risk activity spaces in a large outdoor urban drug market area, underscoring the significance of accounting for risk spaces and social networks in addressing syndemics within PWID populations.

HIV-1 and opiates modulate miRNA profiles in extracellular vesicles

Opiate abuse increases the risk of HIV transmission and exacerbates HIV neuropathology by increasing inflammation and modulating immune cell function. Exosomal EVs(xEV) contain miRNAs that may be differentially expressed due to HIV infection or opiate abuse. Here we develop a preliminary exosomal-miRNA biomarker profile of HIV-infected PBMCs in the context of opiate use. PBMCs infected with HIV were treated with increasing dosages of morphine for 72 hours, the culture supernatants were collected, and the exosomes isolated using differential centrifugation. Exosomal miRNAs were extracted, expression levels determined via Nanostring multiplexed microRNA arrays, and analyzed with Webgestalt. The effect of the exosomes on neuronal function was determined by measuring calcium. Preliminary findings show that HIV-1 infection altered the miRNA profile of PBMC-derived EVs concurrently with opiate exposure. MicroRNA, hsa-miR-1246 was up-regulated 12-fold in the presence of morphine, relative to uninfected control. PBMCs infected with HIV-1 MN, an X4-tropic HIV-1 strain and exposed to morphine, displayed a trend which suggests potential synergistic effects between HIV-1 infection and morphine exposure promoting an increase in viral replication. Dose-dependent differences were observed in miRNA expression as a result of opiate exposure. The xEVs derived from PBMCs exposed to morphine or HIV modulated neuronal cell function. SH-SY5Y cells, treated with xEVs derived from ART-treated PBMCs, exhibited increased viability while for SH-SY5Ys exposed to xEVs derived from HIV-1 infected PBMCs viability was decreased compared to the untreated control. Exposing SH-SY5Y to xEVs derived from HIV-infected PBMCs resulted in significant decrease in calcium signaling, relative to treatment with xEVs derived from uninfected PBMCs. Overall, HIV-1 and morphine induced differential miRNA expression in PBMC-derived exosomes, potentially identifying mechanisms of action or novel therapeutic targets involved in opiate use disorder, HIV neuropathology, TNF signaling pathway, NF-κB signaling pathway, autophagy, and apoptosis in context of HIV infection.

Intersecting Relationships of Psychosocial and Structural Syndemic Problems Among People with HIV in South Africa: Using Network Analysis to Identify Influential Problems

In South Africa, little is known about interrelationships between syndemic problems among people with HIV (PWH). A better understanding of syndemic problems may yield important information regarding factors amenable to mitigation. We surveyed 194 PWH in Khayelitsha, outside of Cape Town, South Africa. We used network analysis to examine the frequency of 10 syndemic problems and their interrelationships. Syndemic problems among PWH in South Africa were common; 159 (82.8%) participants reported at least 2 co-occurring syndemic problems and 90 (46.9%) endorsed 4 or more. Network analysis revealed seven statistically significant associations. The most central problems were depression, substance use, and food insecurity. Three clusters of syndemics were identified: mood and violence; structural factors; and behavioral factors. Depression, substance use, and food insecurity commonly co-occur among PWH in sub-Saharan Africa and interfere with HIV outcomes. Network analysis can identify intervention targets to potentially improve HIV treatment outcomes.

Social-spatial network structures among young urban and suburban persons who inject drugs in a large metropolitan area

Background

It is estimated that there are 1.5% US adult population who inject drugs in 2018, with young adults aged 18-39 showing the highest prevalence. PWID are at a high risk of many blood-borne infections. Recent studies have highlight the importance of employing the syndemic approach to study opioid misuse, overdose, HCV and HIV, along with the social and environmental contexts where these interrelated epidemics occur in already marginalized communities. Social interactions and spatial contexts are important structural factors that are understudied.

Methods

Egocentric injection network and geographic activity spaces for young (aged 18-30) PWID and their injection, sexual, and social support network members (i.e., where reside, inject drugs, purchase drugs, and meet sex partners) were examined using baseline data from an ongoing longitudinal study (n=258). Participants were stratified based on the location of all place(s) of residence in the past year i.e., urban, suburban, and transient (both urban and suburban) to i) elucidate geospatial concentration of risk activities within multi-dimensional risk environments based on kernel density estimates; and ii) examine spatialized social networks for each residential group.

Results

Participants were mostly non-Hispanic white (59%); 42% were urban residents, 28% suburban, and 30% transient. We identified a spatial area with concentrated risky activities for each residence group on the West side of Chicago where a large outdoor drug market area is located. The urban group (80%) reported a smaller concentrated area (14 census tracts) compared to the transient (93%) and suburban (91%) with 30 and 51 tracts, respectively. Compared to other areas in Chicago, the identified area had significantly higher neighborhood disadvantages (e.g., higher poverty rate, p <0.001). Significant ( p <0.01 for all) differences were observed in social network structures: suburban had the most homogenous network in terms of age and residence, transient participants had the largest network (degree) and more non-redundant connections.

Conclusion

We identified concentrated risk activity spaces among PWID from urban, suburban, and transient groups in a large outdoor urban drug market area, which highlights the need for considering the role of risk spaces and social networks in addressing the syndemics in PWID populations.

Differential Effects of Patient Navigation across Latent Profiles of Barriers to Care among People Living with HIV and Comorbid Conditions

Engaging people living with HIV who report substance use (PLWH-SU) in care is essential to HIV medical management and prevention of new HIV infections. Factors associated with poor engagement in HIV care include a combination of syndemic psychosocial factors, mental and physical comorbidities, and structural barriers to healthcare utilization. Patient navigation (PN) is designed to reduce barriers to care, but its effectiveness among PLWH-SU remains unclear. We analyzed data from NIDA Clinical Trials Network's CTN-0049, a three-arm randomized controlled trial testing the effect of a 6-month PN with and without contingency management (CM), on engagement in HIV care and viral suppression among PLWH-SU (n = 801). Latent profile analysis was used to identify subgroups of individuals' experiences to 23 barriers to care. The effects of PN on engagement in care and viral suppression were compared across latent profiles. Three latent profiles of barriers to care were identified. The results revealed that PN interventions are likely to be most effective for PLWH-SU with fewer, less severe healthcare barriers. Special attention should be given to individuals with a history of abuse, intimate partner violence, and discrimination, as they may be less likely to benefit from PN alone and require additional interventions.

Multimorbidity classes indicate differential patterns of health care engagement among people who inject drugs

BACKGROUND

Aging people who inject drugs (PWID) have complex health needs. Health care management could be complicated by persistent substance use, multiple health challenges, and inconsistent access to care. However, we know little about the relationship between chronic multimorbidity and health care engagement in this population. The purpose of this study is to characterize patterns and correlates of chronic disease multimorbidity among PWID.

METHODS

We conducted a latent class analysis (LCA) using data from the AIDS Linked to the IntraVenous Experience (ALIVE) Study, a community-based observational cohort, to determine classes of multimorbid chronic diseases. We then conducted regressions to determine factors associated with class membership and the impact of each multimorbid class on health events and utilization.

RESULTS

Of 1387 individuals included, the majority were male (67%) and Black (81%), with a mean age of 53 years. We identified four classes of multimorbidity: Low Multimorbidity (54%), and Low Multimorbidity Including Psychiatric Comorbidity (26%), Multimorbidity (12%), and Multimorbidity Including Psychiatric Comorbidity (7%). Female sex, baseline age, and receipt of disability were factors significantly associated with membership in all three classes compared to the Low Multimorbidity class. Additionally, PWID in these three classes were significantly more likely to utilize emergency room and outpatient health care. Membership in both classes with psychiatric comorbidity was associated with significantly higher adjusted odds of receiving medication for opioid use disorder.

DISCUSSION

Holistic health care systems can best address the needs of aging PWID with integrated care that provides harm reduction, substance use and mental health treatment together, and wrap around services.

Structural Syndemics and Antiretroviral Medication Adherence Among Black Sexual Minority Men Living With HIV

BACKGROUND

Although HIV antiretroviral treatment (ART) access and uptake have increased among racial/ethnic minority individuals, lower rates of ART adherence and viral suppression persist, especially among Black men who have sex with men (BMSM) compared with their White counterparts.

SETTING

Black men who have sex with men living with HIV (BMSM+) residing in Los Angeles County (N = 124) were recruited in-person (eg, clinic) and online (eg, social networking apps).

METHODS

Participants completed a cross-sectional survey measuring demographic characteristics, structural syndemics (poverty, criminal justice involvement, and housing instability), and psychosocial syndemics (mental health and substance use). A text message survey assessed missed doses of ART over the past week. Zero-inflated Poisson regression models were used to evaluate variables associated with the number of missed doses of ART.

RESULTS

On average, participants missed 1.30 doses of ART (SD = 2.09) and reported structural syndemics: poverty (56.1%), criminal justice involvement (36.6%), housing instability (26.3%), and psychosocial syndemics: childhood sexual abuse (51.8%), intimate partner violence (16.9%), depression (39%), and problem alcohol use (15.5%). After controlling for employment, age, education, and psychosocial syndemics, participants with a one-point increase in structural syndemic indicators were found to be 1.63 times more likely to have missed a dose of ART.

CONCLUSIONS

Structural syndemic were associated with ART nonadherence among BMSM+ after adjusting for demographic and psychosocial factors. HIV treatment interventions that incorporate financial incentives, legal support, and housing may help improve ART adherence among BMSM+. Findings suggest that key priorities to ending the HIV epidemic must include structural interventions that alleviate poverty, eliminate disproportionate policing and criminalization, and end homelessness.

Latent Class Analysis of Syndemic Factors Associated with Sustained Viral Suppression among Ryan White HIV/AIDS Program Clients in Miami, 2017

The study's objective was to identify the association between sustained viral suppression (all viral load tests < 200 copies/ml per year) and patterns of co-occurring risk factors including, mental health, substance use, sexual risk behavior, and adverse social conditions for people with HIV (PWH). Latent class analysis followed by multivariable logistic regression was conducted for 6554 PWH in the Miami-Dade County Ryan White Program during 2017, and a five-class model was selected. Compared to Class 1 (no risk factors), the odds of achieving sustained viral suppression was significantly lower for Class 2 (mental health) (aOR: 0.67; 95% CI 0.54-0.83), Class 3 (substance use and multiple sexual partners) (0.60; 0.47-0.76), Class 4 (substance use, multiple sexual partners, and domestic violence) (0.71; 0.55-0.93), and Class 5 (mental health, substance use, multiple sexual partners, domestic violence, and homelessness) (0.26; 0.19-0.35). Findings indicate the need for targeted interventions that address these syndemic factors.

Longitudinal Associations of Syndemic Conditions with Antiretroviral Therapy Adherence and HIV Viral Suppression Among HIV-Infected Patients in Primary Care

Psychosocial syndemic conditions have received more attention regarding their deleterious effects on HIV acquisition risk than for their potential impact on HIV treatment and viral suppression. To examine syndemic conditions' impact on the HIV care continuum, we analyzed data collected from people living with HIV (N = 14,261) receiving care through The Centers for AIDS Research Network of Integrated Clinical Systems at seven sites from 2007 to 2017 who provided patient-reported outcomes ∼4-6 months apart. Syndemic condition count (depression, anxiety, substance use, and hazardous drinking), sexual risk group, and time in care were modeled to predict antiretroviral therapy (ART) adherence and viral suppression (HIV RNA <400 copies/mL) using multilevel logistic regression. Comparing patients with each other, odds of ART adherence were 61.6% lower per between-patient syndemic condition [adjusted odds ratio (AOR) = 0.384; 95% confidence interval (CI), 0.362-0.408]; comparing patients with themselves, odds of ART adherence were 36.4% lower per within-patient syndemic condition (AOR = 0.636 95% CI, 0.606-0.667). Odds of viral suppression were 29.3% lower per between-patient syndemic condition (AOR = 0.707; 95% CI, 0.644-0.778) and 27.7% lower per within-patient syndemic condition (AOR = 0.723; 95% CI, 0.671-0.780). Controlling for the effects of adherence (AOR = 5.522; 95% CI, 4.67-6.53), each additional clinic visit was associated with 1.296 times higher odds of viral suppression (AOR = 1.296; 95% CI, 1.22-1.38), but syndemic conditions were not significant. Deploying effective interventions within clinics to identify and treat syndemic conditions and bolster ART adherence and continued engagement in care can help control the HIV epidemic, even within academic medical settings in the era of increasingly potent ART.

The Role of Comorbidity on Retention in HIV Care

Retention is a central component of the Cascade, facilitating monitoring of comorbidity. Country-specific definitions differ and may suit stable and functioning clients, while not appropriately classifying complex clinical presentations characterized by comorbidity. A retrospective file review of 363 people living with HIV attending a Sydney HIV clinic was conducted. Retention was compared with Australian (attendance once/12-months) and World Health Organization (attendance 'appropriate to need') recommendations to identify those attending according to the Australian definition, but not clinician recommendations (AUnotWHO). Multivariable logistic regression analyses determined the impact of age/sex and clinician-assessed comorbidity on retention. Most (97%) participants were considered retained according to the Australian definition, but only 56.7% according to clinician recommendations. Those with psychosocial comorbidity alone were less likely to be in the AUnotWHO group (OR 0.51, 95%CI 0.27-0.96, p = 0.04). The interaction of physical and psychosocial comorbidity was predictive of poor retention (Wald test: χ² = 6.39, OR 2.39 [95% CI 1.15-4.97], p = 0.01), suggesting a syndemic relationship.

Estimating HIV transmissions in a large U.S. clinic-based sample: effects of time and syndemic conditions

INTRODUCTION

Little is known about onward HIV transmissions from people living with HIV (PLWH) in care. Antiretroviral therapy (ART) has increased in potency, and treatment as prevention (TasP) is an important component of ending the epidemic. Syndemic theory has informed modelling of HIV risk but has yet to inform modelling of HIV transmissions.

METHODS

Data were from 61,198 primary HIV care visits for 14,261 PLWH receiving care through the Centers for AIDS Research (CFAR) Network of Integrated Clinical Systems (CNICS) at seven United States (U.S.) sites from 2007 to 2017. Patient-reported outcomes and measures (PROs) of syndemic conditions - depressive symptoms, anxiety symptoms, drug use (opiates, amphetamines, crack/cocaine) and alcohol use - were collected approximately four to six months apart along with sexual behaviours (mean = 4.3 observations). Counts of syndemic conditions, HIV sexual risk group and time in care were modelled to predict estimated HIV transmissions resulting from sexual behaviour and viral suppression status (HIV RNA < 400/mL) using hierarchical linear modelling.

RESULTS

Patients averaged 0.38 estimated HIV transmissions/100 patients/year for all visits with syndemic conditions measured (down from 0.83, first visit). The final multivariate model showed that per 100 patients, each care visit predicted 0.05 fewer estimated transmissions annually (95% confidence interval (CI): 0.03 to 0.06; p < 0.0005). Cisgender women, cisgender heterosexual men and cisgender men of undisclosed sexual orientation had, respectively, 0.47 (95% CI: 0.35 to 0.59; p < 0.0005), 0.34 (95% CI: 0.20 to 0.49; p < 0.0005) and 0.22 (95% CI: 0.09 to 0.35; p < 0.005) fewer estimated HIV transmissions/100 patients/year than cisgender men who have sex with men (MSM). Each within-patient syndemic condition predicted 0.18 estimated transmissions/100 patients/year (95% CI: 0.12 to 0.24; p < 0.0005). Each between-syndemic condition predicted 0.23 estimated HIV transmissions/100 patients/year (95% CI: 0.17 to 0.28; p < 0.0005).

CONCLUSIONS

Estimated HIV transmissions among PLWH receiving care in well-resourced U.S. clinical settings varied by HIV sexual risk group and decreased with time in care, highlighting the importance of TasP efforts. Syndemic conditions remained a significant predictor of estimated HIV transmissions notwithstanding the effects of HIV sexual risk group and time in care.

The individual, interactive, and syndemic effect of substance use, depression, education, and ethnicity on retention in HIV care

In this study, we sought to assess the individual, syndemic, and interactive associations between individual-level factors and retention in care. The sample was derived from the Miami Adult Studies on human immunodeficiency virus (HIV)/ acquired immune deficiency syndrome (AIDS) cohort from 2009 to 2014. The variables were entered into a multiple logistic regression with retention as the outcome. Backward regression, adjusting for all main effects, was conducted to determine which two-way interactions were associated with retention. Multivariable logistic regression was used to test which number of factors were associated with retention. Non-Hispanic Black race/ethnicity was associated with improved retention (odds ratio [OR] = 2.44, 95% confidence interval [CI]: 1.06-5.75, p ≤ 0.05) when compared to Non-Hispanic White persons. Black-Hispanic and Other racial/ethnic identities were associated with increased retention (OR = 4.84, 95%CI: 1.16-25.79, p ≤ 0.05 and OR = 7.24, 95%CI: 1.54-54.05, p ≤ 0.05, respectively) when compared to Non-Hispanic White persons. The interaction between depressive symptoms and Alcohol Use Disorder Identification Test (AUDIT, a test that assesses alcohol use disorder) score was significantly and negatively associated with retention in HIV care (OR = 0.14, 95%CI: 0.01-1.11, p ≤ 0.10). The interaction between age and male gender was also negatively associated with retention (OR = 0.95, 95%CI: 0.88-1.01, p ≤ 0.10), and the interaction between male gender and depression was positively associated with retention (OR = 7.17, 95%CI: 0.84-98.49, p ≤ 0.10). In conclusion, multiple races/ethnicities, specifically Non-Hispanic Black, Black-Hispanic, and Other racial/ethnic identification, were associated with increased odds of retention. Multiple interactions, specifically depressive symptoms * alcohol use disorder and male gender * age, were negatively associated with retention. The male gender * depression interaction was positively associated with retention in HIV care.

Improvements in Retention in Care and HIV Viral Suppression Among Persons with HIV and Comorbid Mental Health Conditions: Patient-Centered HIV Care Model

The Patient-centered HIV Care Model (PCHCM) integrated community-based pharmacists with medical providers and required sharing of patient clinical information and collaborative therapy-related action planning. We determined the proportions of participants with HIV and mental health conditions who were retained in care and the proportion virally suppressed, pre- and post-implementation. Overall, we found a relative 13% improvement in both retention [60% to 68% (p = 0.009)] and viral suppression [79% to 90% (p < 0.001)]. Notable improvements were seen among persons triply diagnosed with HIV, mental illness and substance use [+ 36% (50% to 68%, p = 0.036) and + 32% (66% to 86%, p = 0.001) in retention and viral suppression, respectively]. There were no differences in the proportions of persons adherent to psychiatric medications, pre- to post-implementation, nor were there differences in the proportions of persons retained in care or virally suppressed by psychiatric medication adherence, post-implementation. PCHCM demonstrated that collaborations between community-based pharmacists and medical providers can improve HIV care continuum outcomes among persons with mental health conditions.

Addressing Syndemics and Self-care in Individuals with Uncontrolled HIV: An Open Trial of a Transdiagnostic Treatment

Interventions addressing syndemics and ART adherence are needed for individuals with uncontrolled HIV and psychosocial problems. Twenty-seven participants with detectable HIV plasma viral load (PVL) or recent STI participated in an open trial of transdiagnostic adherence counseling and cognitive behavioral therapy. Outcomes were collected at baseline, 4-, and 8-months. Log PVL improved from baseline to 4-month (γ = - 1.13, 95% CI - 1.72, - 0.55, p < 0.001) and 8-month (γ = - 0.93, 95% CI - 1.57, - 0.30, p = 0.006), with more participants suppressed at 4- (χ2(1) = 9.09, p = 0.001) and 8-month (χ2(1) = 5.14, p = 0.016). Self-reported adherence improved across major assessments (γ = 0.87, 95% CI 0.28, 1.46, p = .005); Wisepill adherence did not. Negative affect declined during treatment (γ = - 0.28, 95% CI - 0.40, - 0.16, p < 0.001), with improvement at 4- (γ = - 4.34, 95% CI - 6.99, - 1.69, p = 0.002) but not 8-month. Positive affect trended positively during treatment and from baseline to 4-month, with significant 8-month improvement (γ = 3.84, 95% CI 0.33, 7.44, p = 0.04). Depressive symptoms did not change. In a complicated sample of participants selected for uncontrolled HIV, the intervention yielded improved PVL and self-reported adherence. Efforts to end HIV should improve upon strategies such as these, addressing syndemics. Registration: clinicaltrial.gov: NCT02696681.

ART uptake and adherence among women who use drugs globally: A scoping review

OBJECTIVE

To assess the state of peer-reviewed literature surrounding uptake and adherence of antiretroviral therapy (ART) among HIV-positive women who use drugs (WWUD).

METHODS

Consistent with PRISMA-ScR guidelines, we conducted a scoping literature review on ART uptake and adherence among WWUD, searching PubMed, Embase, CINAHL, PsycInfo, and Sociological Abstracts. Eligibility criteria included: reporting at least one ART uptake or adherence related result among WWUD aged 18 or older; peer-reviewed; published in English between 1996-2018.

RESULTS

Our search identified 6735 studies; 86 met eligibility requirements. ART uptake ranged from 30 % to 76 % and adherence ranged from 27 % to 95 %. Substance use, co-morbid psychiatric disorders, and side effects emerged as the primary ART uptake and adherence barriers among this population. Few facilitators were identified.

CONCLUSION

This study is the first scoping review to look at ART uptake and adherence among WWUD globally. The wide range in uptake and adherence outcomes indicates the need for gold standard assessments, which may differ between high and low resource settings. This study offers rich insight into uptake and adherence barriers and facilitators, primarily at the intrapersonal level. More research is needed to examine interventions that focus on additional levels of the SEM (e.g., community and policy levels). These review findings can inform ART interventions, future research, and offer guidance to other support services with WWUD, such as PrEP interventions.

Patterns of Sexual Risk Behavior, HIV Infection, and Use of Health Services Among Sub-Saharan African Migrants in Portugal

This study identified patterns of sexual risk behavior among a sub-Saharan African migrant (SAM) population in Portugal and examined its associations with human immunodeficiency virus (HIV) prevalence, sociodemographics, use of sexual health services, and HIV testing. A cross-sectional biobehavioral survey was conducted with a venue-based sample of 790 SAMs. Data were collected using questionnaires and rapid HIV tests. Cluster analysis identified five subgroups with differing levels of HIV infection (2.5% to 11.3%). In Cluster 1, most participants reported sexual abstinence over the past year and the remaining used condoms consistently; this cluster had the highest HIV prevalence (11.3%). In Cluster 2, most reported one sexual partner and all reported unprotected sex; all HIV-positive participants in this cluster were unaware of their HIV-positive status. In Clusters 3 and 4, most had four or more partners, yet all used condoms. In Cluster 3, 56.5% reported both regular and occasional partners. In Cluster 4, 74% had only occasional partners; all engaged in commercial sex. In Cluster 5, all reported four or more partners and condomless sex. In all subgroups we found low rates of HIV testing and high unawareness of HIV serostatus. Targeted prevention interventions are needed to reduce unprotected sexual relations and undiagnosed infection, as well as improve linkage to sexual health services.

Concurrent Hepatitis C and B Virus and Human Immunodeficiency Virus Infections Are Associated With Higher Mortality Risk Illustrating the Impact of Syndemics on Health Outcomes

Background

Hepatitis C virus (HCV), hepatitis B virus (HBV), and human immunodeficiency virus (HIV) infections are associated with significant mortality globally and in North America. However, data on impact of concurrent multiple infections on mortality risk are limited. We evaluated the effect of HCV, HBV, and HIV infections and coinfections and associated factors on all-cause mortality in British Columbia (BC), Canada.

Methods

The BC Hepatitis Testers Cohort includes ~1.7 million individuals tested for HCV or HIV, or reported as a case of HCV, HIV, or HBV from 1990 to 2015, linked to administrative databases. We followed people with HCV, HBV, or HIV monoinfection, coinfections, and triple infections from their negative status to date of death or December 31, 2016. Extended Cox proportional hazards regression was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for factors associated with all-cause mortality.

Results

Of 658 704 individuals tested for HCV, HBV, and HIV, there were 33 804 (5.13%) deaths. In multivariable Cox regression analysis, individuals with HCV/HBV/HIV (HR, 8.9; 95% CI, 8.2–9.7) infections had the highest risk of mortality followed by HCV/HIV (HR, 4.8; 95% CI, 4.4–5.1), HBV/HIV (HR, 4.1; 95% CI, 3.5–4.8), HCV/HBV (HR, 3.9; 95% CI, 3.7–4.2), HCV (HR, 2.6; 95% CI, 2.6–2.7), HBV (HR, 2.2; 95% CI, 2.0–2.3), and HIV (HR, 1.6; 95% CI, 1.5–1.7). Additional factors associated with mortality included injection drug use, problematic alcohol use, material deprivation, diabetes, chronic kidney disease, heart failure, and hypertension.

Conclusions

Concurrent multiple infections are associated with high mortality risk. Substance use, comorbidities, and material disadvantage were significantly associated with mortality independent of coinfection. Preventive interventions, including harm reduction combined with coinfection treatments, can significantly reduce mortality.

Perceived barriers to pre-exposure prophylaxis use and the role of syndemic factors among female sex workers in the Mexico-United States border region: a latent class analysis

Female sex workers (FSWs) experience syndemic factors (e.g., polydrug use, hazardous alcohol consumption, client-perpetrated violence, depression, and sexually transmitted infections) that often heighten vulnerability to HIV and limit healthcare utilization. We hypothesized that syndemic factors will limit FSWs' uptake of pre-exposure prophylaxis (PrEP). From 2016 to 2017, 295 HIV-negative FSWs were enrolled in a behavioral HIV prevention trial in Tijuana and Ciudad Juarez, Mexico, underwent STI testing, and completed surveys on syndemic factors and perceived barriers to PrEP use. Syndemic scores (0-5) were calculated by summing syndemic factors. Latent class analysis (LCA) was used to identify homogeneous classes with respect to perceived barriers to PrEP use. We identified four classes: (1) perceived healthcare access barriers (8.3%), (2) perceived financial barriers (18.7%), (3) high level of perceived barriers (19.9%), and (4) low level of perceived barriers (53.0%) to PrEP use. Those experiencing three (adjusted odds ratio [aOR] = 3.63, 95% confidence interval [CI] = 1.24-10.67) and four or five (aOR = 6.30, 95% CI = 1.70-23.35) syndemic factors had a higher odds of membership in the class characterized by a high level of perceived barriers than in the class characterized by a low level of perceived barriers. Addressing syndemic factors may maximize PrEP's impact among FSWs along Mexico's northern border.

Effects of HIV-Related Discrimination on Psychosocial Syndemics and Sexual Risk Behavior among People Living with HIV

In the context of HIV-related stigma and discrimination, people living with HIV (PLHIV) might be vulnerable to a ‘syndemic’ of co-occurring psychosocial challenges that can affect sexual behavior. The present study examined how HIV-related discrimination contributes to co-occurring psychosocial syndemic problems and results in inconsistent condom use among PLHIV in Hong Kong. Two-hundred and ninety-one PLHIV were recruited to complete a self-report questionnaire. More than one-quarter of the sample experienced two or more psychosocial syndemic problems, and 74.1% of the participants who had sex with steady partners reported inconsistent condom use over the past three months. The results indicated that HIV-related discrimination was positively predictive of the number of psychosocial syndemic problems. HIV-related discrimination and psychosocial syndemics were associated with increased odds of inconsistent condom use with steady partners (AOR = 5.40 and AOR = 3.09 respectively). Findings from structural equation modeling showed that psychosocial syndemics mediated the effect of HIV-related discrimination on condom use consistency with steady partners. PLHIV in Hong Kong suffered from the syndemic effects of stigma, social isolation, and poor mental health, which rendered them vulnerable to condomless sex. In order to curb the rapidly increasing incidence of HIV, multi-level strategies should be adopted to concurrently address the structural inequities and psychosocial syndemics faced by PLHIV.

Social Networks Moderate the Syndemic Effect of Psychosocial and Structural Factors on HIV Risk Among Young Black Transgender Women and Men who have Sex with Men

The interaction between the cumulative effect of psychosocial and structural factors (i.e. syndemic effect) and social networks among young Black transgender women and men who have sex with men (YBTM) remains understudied. A representative cohort of 16-29 year-old YBTM (n = 618) was assessed for syndemic factors [i.e. substance use; community violence; depression; poverty; justice system involvement (JSI)], social network characteristics, condomless anal sex (CAS), group sex (GS), and HIV-infection. The syndemic index significantly increased the odds of CAS, GS, and HIV-infection, and these effects were moderated by network characteristics. Network JSI buffered the effect on CAS, romantic network members buffered the effect on GS, and network age and proportion of family network members buffered the effect on HIV-infection. The proportion of friend network members augmented the effect on GS and HIV-infection. Future research to prevent HIV among YBTM should consider social network approaches that target both structural and psychosocial syndemic factors.

High Levels of Syndemics and Their Association with Adherence, Viral Non-suppression, and Biobehavioral Transmission Risk in Miami, a U.S. City with an HIV/AIDS Epidemic

Miami is a Southeastern United States (U.S.) city with high health, mental health, and economic disparities, high ethnic/racial diversity, low resources, and the highest HIV incidence and prevalence in the country. Syndemic theory proposes that multiple, psychosocial comorbidities synergistically fuel the HIV/AIDS epidemic. People living with HIV/AIDS in Miami may be particularly affected by this due to the unique socioeconomic context. From April 2017 to October 2018, 800 persons living with HIV/AIDS in a public HIV clinic in Miami completed an interviewer-administered behavioral and chart-review cross-sectional assessment to examine the prevalence and association of number of syndemics (unstable housing, low education, depression, anxiety, binge drinking, drug use, violence, HIV-related stigma) with poor ART adherence, unsuppressed HIV viral load (≥ 200 copies/mL), and biobehavioral transmission risk (condomless sex in the context of unsuppressed viral load). Overall, the sample had high prevalence of syndemics (M = 3.8), with almost everyone (99%) endorsing at least one. Each syndemic endorsed was associated with greater odds of: less than 80% ART adherence (aOR 1.64, 95% CI 1.38, 1.98); having unsuppressed viral load (aOR 1.16, 95% CI 1.01, 1.33); and engaging in condomless sex in the context of unsuppressed viral load (1.78, 95% CI 1.30, 2.46). The complex syndemic of HIV threatens to undermine the benefits of HIV care and are important to consider in comprehensive efforts to address the disproportionate burden of HIV/AIDS in the Southern U.S. Achieving the 90-90-90 UNAIDS and the recent U.S. "ending the epidemic" targets will require efforts addressing the structural, social, and other syndemic determinants of HIV treatment and prevention.

Depression, injecting drug use, and risky sexual behavior syndemic among women who inject drugs in Kenya: a cross-sectional survey

BACKGROUND

Injecting drug use (IDU) is a key driver of the HIV epidemic particularly when individuals experience psychosocial conditions and risky sexual behavior in a syndemic manner. This study sets out to assess evidence of a syndemic pattern of psychosocial conditions (IDU, depression, intimate partner violence (IPV)) on one the hand and risky sexual behavior on the other while accounting for the socio-economic disadvantage among women who inject drugs (WWID) in low-income urban settings in Kenya.

METHODS

Using a cross-sectional study design, this study recruited 306 WWIDs from two sites in Nairobi between January 2017 and July 2017. Multiple methodologies including descriptive analyses of co-occurrences of psychosocial conditions at the individual level, standard logistic regression analyses to examine relationships and interactions within and between psychosocial conditions and risky sexual behavior, and classification trees algorithm for predictive modeling via machine learning were employed.

RESULTS

The prevalence of the psychosocial conditions was as follows: IDU, 88%; depression, 77.1%; and IPV, 84%. The prevalence of risky sexual behavior was 69.3%. IDU and depression were related to each other (P < 0.05) and each of them with risky sexual behavior (P < 0.05). The highest 2-way and 3-way co-occurrence of conditions were reported in IDU and depression (72%) and in IDU, depression, and risky sexual behavior (62%), respectively, indicating clustering of the conditions at the individual level. Further, each additional psychosocial condition (IDU and depression) was associated with sixfold odds (P = 0.000) of having risky sexual behavior suggesting a dose-response relationship. Logistic regression analyses incorporating multiplicative interactive effects returned three significant variables (P < 0.05): IDU*depression interaction effect, "Age when delivered the first child," and "Income." Classification tree modeling represented a 5-level interaction analysis with IDU and depression predicted to have the highest influence on risky sexual behavior.

CONCLUSION

Findings provide possible evidence of a syndemic pattern involving IDU, depression, and risky sexual behavior suggesting the need for an integrated approach to the implementation of harm reduction interventions among WWID in low-income urban settings in Kenya. This work highlights the need for further studies to authenticate the findings and to characterize pathways in the syndemic development in WWID.

Learning to address multiple syndemics for people living with HIV through client perspectives on CBT

OBJECTIVE

The mental health burden among people living with HIV/AIDS (PLWHA) is high and often involves multiple comorbid psychological and substance use-related psychosocial problems. These co-occurring problems, or syndemics, additively impair engagement in HIV disease management. Existing psychotherapies for mental health and HIV health have generally focused on a single psychosocial problem and little research exists to guide future psychotherapies that address multiple mental health issues.

METHOD

To address this gap in understanding, we conducted qualitative interviews with multiply comorbid PLWHA (N = 30) who completed cognitive-behavioural therapy (CBT) for depression and medication adherence.

RESULTS

Themes emerged regarding participants' perspectives on how overlapping substance use and mood disorders interacted to reduce the benefit of CBT. Substance use was a dominant theme compared to other syndemics, highlighting the need for integrated mental health and substance use interventions. Interviews also suggested modifications of which psychosocial concerns participants felt should be prioritized in treatment delivery. Finally, participants described content they would want in a psychotherapy intervention, including intimacy and sexual health.

CONCLUSIONS

Future psychotherapeutic interventions for syndemic problems and HIV self-care will need to comprehensively address complex concerns, including issues salient to the overall well-being of PLWHA. This may improve client engagement and, ultimately, mental, and physical health outcomes. Clinical or methodological significance of this article: Although mental health comorbidity is common and often complex among clients living with HIV, little research exists to guide psychotherapy for such intricate mental health concerns. The current study used content analysis of in-depth qualitative interviews with clients living with HIV and multiple mental health comorbidities who had recently completed cognitive-behavioural therapy. Recommendations based on these findings suggest strategies for clinicians working with similar clients to consider and offers suggestions for future treatment development research.

Identifying, linking, and treating people who inject drugs and were recently infected with HIV in the context of a network-based intervention

Identifying and linking people to care soon after HIV infection could limit viral transmission and protect their health. This work aims at describing the continuum of care among recently HIV-infected people who inject drugs (PWID) and participated in an intervention in the context of an HIV outbreak in Athens, Greece. The Transmission Reduction Intervention Project (TRIP) conducted risk network-based contact tracing and screened people for recent HIV infection. A comprehensive approach with a case management component that aimed to remove barriers to accessing care was adopted. Follow-up data on antiretroviral treatment (ART) and HIV-RNA levels were obtained from HIV clinics. TRIP enrolled 45 recently HIV-infected PWID (80% male) with a median viral load at recruitment of 5.43 log₁₀ copies/mL. Of the recently infected persons in TRIP, 87% were linked to care; of these, 77% started ART; and of those on ART, 89% achieved viral load <200 copies/mL. TRIP and its public health allies managed to get most of the recently HIV-infected PWID who were identified by the program into care and many of them onto ART. This resulted in very low HIV-RNA levels. Treatment as prevention can work if individuals are aided in overcoming difficulties in entry to, or attrition from care.

PrEP and the syndemic of substance use, violence, and HIV among female and male sex workers: a qualitative study in Kisumu, Kenya

INTRODUCTION

Female and male sex workers experience heightened vulnerability to HIV and other health harms that are compounded by substance use, physical and sexual violence, and limited access to health services. In Kisumu, Kenya, where sex work is widespread and substance use is a growing public health concern, offering pre-exposure prophylaxis (PrEP) for HIV prevention could help curtail the HIV epidemic. Our study examines "syndemics," or mutually reinforcing epidemics of substance use, violence and HIV, in relation to PrEP acceptability and feasibility among female and male sex workers in Kenya, one of the first African countries to approve PrEP for HIV prevention.

METHODS

From 2016 to 2017, sex workers in Kisumu reporting recent alcohol or drug use and experiences of violence participated in qualitative interviews on HIV risk and perspectives on health service needs, including PrEP programming. Content analysis identified themes relating to PrEP knowledge, acceptability, access challenges and delivery preferences.

RESULTS

Among 45 female and 28 male sex workers, median age was 28 and 25 respectively. All participants reported past-month alcohol use and 91% of women and 82% of men reported past-month drug use. Violence was pervasive, with most women and men reporting past-year physical (96% women, 86% men) and sexual (93% women, 79% men) violence. Concerning PrEP, interviews revealed: (1) low PrEP knowledge, especially among women; (2) high PrEP acceptability and perceived need, particularly within syndemic contexts of substance use and violence; and (3) preferences for accessible, non-stigmatizing PrEP delivery initiatives designed with input from sex workers.

CONCLUSIONS

Through a syndemic lens, substance use and violence interact to increase HIV vulnerability and perceived need for PrEP among female and male sex workers in Kisumu. Although interest in PrEP was high, most sex workers in our sample, particularly women, were not benefiting from it. Syndemic substance use and violence experienced by sex workers posed important barriers to PrEP access for sex workers. Increasing PrEP access for sex workers will require addressing substance use and violence through integrated programming.

Ancillary service needs among persons new to HIV care and the relationship between needs and late presentation to care

Ancillary service needs likely influence time to diagnosis and presentation for HIV care. The effect of both met and unmet needs on late presentation to HIV care is not well understood. We used baseline data from 348 people with HIV (PWH) with no prior HIV care who enrolled in iENGAGE (a randomized controlled trial (RCT) of an intervention to support retention in care) at one of four HIV clinics in the US. A standardized baseline questionnaire collected information on ancillary service needs, and whether each need was presently unmet. We examined covariates known to be associated with disease stage at presentation to care and their association with needs. We subsequently assessed the relationship of needs with CD4 accounting for those other covariates by estimating prevalence ratios (PR) using inverse probability weights. Most patients enrolling in the RCT were male (79%) and the majority were Black (62%); median age was 34 years. Prevalence of any reported individual need was 69%. One-third of the sample had a baseline CD4 cell count <200, 42% between 200 and 499 and 27% ≥500. There was no statistically significant association between need or unmet need and baseline CD4. In general, psychiatric health and SU issues (depression, anxiety, and drug use) were consistently associated with higher prevalence of need (met and unmet). Additionally, the Black race was associated with higher basic resource needs (housing: PR 1.67, 95%CI 1.08-2.59; transportation: PR 1.65, 95% CI 1.12-2.45). Ancillary service needs (met and unmet) were common among patients new to HIV care and impacted vulnerable subgroups. However, we found no evidence that reporting a specific individual need, whether met or unmet, was associated with a timely presentation to HIV care. The impact of needs on subsequent steps of the HIV care continuum will be examined with longitudinal data.

Is co-location of services with HIV care associated with improved HIV care outcomes? A systematic review

This systematic review identifies models of service co-location, a structural intervention strategy to remove barriers to HIV care and services, and examines their associations with HIV care outcomes. A cumulative database (e.g., MEDLINE, EMBASE) of HIV, AIDS, and STI literature was systematically searched and manual searches were conducted to identify relevant studies. Thirty-six studies were classified into six models of co-location: HIV care co-located with multiple ancillary services, tuberculosis (TB) care, non-HIV specific primary care, drug abuse treatment, prevention of mother to child transmission programs (PMTCT), and mental health care. More evidence of a positive association was seen for linkage to care and antiretroviral therapy (ART) uptake than for retention and viral suppression. Models of co-location that addressed HIV and non-HIV medical care issues (i.e., co-location with non-HIV specific primary care, PMTCT, and TB) had more positive associations, particularly for linkage to care and ART uptake, than other co-location models. While some findings are encouraging, more research with rigorous study designs is needed to strengthen the evaluation of, and evidence for, service co-location.

Characterizing the HIV Care Continuum and Identifying Barriers and Facilitators to HIV Diagnosis and Viral Suppression Among Black Transgender Women in the United States

BACKGROUND

Although black transgender women (BTW) experience high prevalence of HIV in the United States, no characterization of the HIV care continuum exists for this population. This study addresses this gap by (1) characterizing the HIV care continuum, and (2) exploring correlates of HIV diagnosis and viral suppression among a community-based sample of BTW.

METHODS

Data came from Promoting Our Worth, Equality, and Resilience (POWER). From 2014 to 2017, POWER recruited BTW who attended Black Pride events in 6 U.S. cities. Participants completed a behavioral health survey and were offered onsite HIV testing. Simple frequencies were used to characterize the HIV care continuum, and multivariable logistic regression analysis was used to identify correlates of HIV diagnosis and viral suppression.

RESULTS

A total of 422 BTW provided completed data for our analysis, 45.0% of whom were living with HIV. Over half of the HIV-positive BTW (51.4%) reported being undiagnosed at the time of survey, and 24.5% reported viral suppression. Incarceration and a lack of access to medical care were significantly and positively associated with an undiagnosed HIV-positive status in multivariable models. Incarceration, homelessness, polydrug use, physical assault, intimate partner violence, and current hormone use were significantly and negatively associated with viral suppression in multivariable models.

CONCLUSIONS

Developing and implementing interventions that address timely HIV diagnosis may assist in informing the HIV disparity among BTW in the United States. Interventions should address the fundamental causes of poor health in this population.

Peer-to-peer injection: Demographic, drug use, and injection-related risk factors

BACKGROUND

Peer-to-peer injection (either providing or receiving an injection to/from a person who injects drugs [PWID]) is common (19%-50%) among PWID. Most studies of peer-to-peer injection have focused on receiving injection assistance, with fewer examining providing injection assistance and none considering characteristics of PWID who do both. We examined characteristics of PWID by peer-to-peer injection categories (receiving, providing, both, and neither) and determined if these behaviors were associated with receptive and distributive syringe sharing.

METHODS

Los Angeles and San Francisco PWID (N = 777) were recruited using targeted sampling methods and interviewed during 2011-2013. Multinomial logistic regression was used to determine characteristics associated with peer-to-peer injection categories and logistic regression was used to examine if peer-to-peer categories were independently associated with distributive and receptive syringe sharing.

RESULTS

Recent peer-to-peer injection was reported by 42% of PWID (18% provider; 14% recipient; 10% both). In multinomial regression analysis, PWID reporting any peer-to-peer injection were more likely to inject with others than those who did neither. Injection providers and those who did both were associated with more frequent injection, illegal income source, and methamphetamine injection while injection recipients were associated with fewer years of injection. Injection providers were younger, had more years of injecting, and were more likely to inject heroin than PWID who did neither. In multivariate analyses, we found that providers and PWID who did both were significantly more likely to report receptive and distributive syringe sharing than PWID who did neither.

CONCLUSION

Peer-to-peer injection is associated with HIV/HCV risk. Current prevention strategies may not sufficiently address these behaviors. Modification of existing interventions and development of new interventions to better respond to peer-to-peer injection is urgently needed.

Clinical and Economic Effects of a Pharmacist-Administered Antiretroviral Therapy Adherence Clinic for Patients Living with HIV

BACKGROUND

Pharmacists have demonstrated the ability to improve patient adherence to antiretroviral therapy (ART).

OBJECTIVE

To determine the clinical and economic effects of a pharmacist-administered ART adherence clinic for patients living with human immunodeficiency virus (HIV).

METHODS

This pilot study with a pretest-posttest design examined the effect of a pharmacy adherence clinic on patient HIV viral load and CD4 count over a 6-month period. Patients with documented adherence problems were referred to the clinic. The pharmacist counseled patients at baseline and met with patients 1-2 weeks, 6 weeks, 3 months, and 6 months after starting ART. A societal perspective net cost analysis of the pharmacy adherence clinic was conducted to assess the economic efficiency of the intervention.

RESULTS

Twenty-eight patients were enrolled in the study, and 16 patients reached completion. Median HIV RNA significantly decreased from 48,000 copies/mL (interquartile range [IQR] = 16,750-139,000) to undetectable (< 20 copies/mL) at 6 months for all study participants who completed the full intervention (P = 0.001). In the 3 months following the intervention, we estimated that it prevented approximately 0.13 secondary HIV infections among the sexual partners of the 16 participants who completed the intervention. The total cost of the intervention was $16,811 ($1,051 per patient), which was less than the future savings in averted HIV-related medical care expenditures ($49,702).

CONCLUSIONS

A pharmacy adherence clinic that focused on early and sustained ART adherence interventions helped patients with documented medication adherence problems achieve an undetectable HIV RNA. The intervention was highly cost saving, with a return of nearly $3 in future medical care savings per dollar spent on the intervention.

DISCLOSURES

This work was supported in part by a research grant to Dilworth, Mercier, and Borrego from the American Society of Health-System Pharmacists Foundation. Klein and Pinkerton were supported in part by grants T32-MH19985 and P30-MH52776, respectively, from the National Institute of Mental Health. No funding bodies had any role in the study design, data collection, analysis, decision to publish, or preparation of the manuscript. The findings and conclusions in this article are those of the authors and do not necessarily represent the official position of the Health Resources and Services Administration. The authors have no conflicts of interest to disclose. Study concept and design were contributed primarily by Dilworth, Mercier, and Borrego, along with the other authors. Dilworth took the lead in data collection, along with Pinkerton, Klein, Mercier, and Jakeman. Data interpretation was performed by Dilworth and Pinkerton, along with the other authors. The manuscript was written by Dilworth, Klein, and Jakeman, with assistance from the other authors, and revised by Dilworth, Jakeman, and Klein, with assistance from the other authors. The results from this study were presented in part at the 2015 United States Conference on AIDS in Washington, DC, on September 10-13, 2015.

Influences of Economic, Social and Cultural Marginalization on the Association Between Alcohol Use and Sexual Risk Among Formerly Incarcerated Latino Men

Formerly incarcerated Latino men (FILM) have been significantly impacted by the HIV/AIDS and alcohol abuse epidemics in the United States. In this analysis, we examine the role of social, economic and cultural marginalization in the likelihood of alcohol-related sexual risk taking behavior among FILM. We recruited a non-random sample of FILM, ages 18-49 (n = 259). We performed logistic regression modeling to test four hypotheses examining the direct and moderating effects of socio-cultural factors. Drinking before sex was strongly associated with high likelihood of condomless intercourse (adjusted odds ratio, AOR = 2.93; 95% CI 1.74, 4.94). Low acculturation and social marginalization factors were significant moderators of the association between high-risk alcohol use and sexual risk behavior among FILM. Our data suggest that risk reduction initiatives geared towards reducing alcohol-related sexual risk taking among FILM should target FILM with low levels of acculturation, and those with high levels loneliness, anxiety, and/or depression.

The organizational attributes of HIV care delivery models in Canada: A cross-sectional study

HIV treatment in Canada has rapidly progressed with the advent of new drug therapies and approaches to care. With this evolution, there is increasing interest in Canada in understanding the current delivery of HIV care, specifically where care is delivered, how, and by whom, to inform the design of care models required to meet the evolving needs of the population. We conducted a cross-sectional survey of Canadian care settings identified as delivering HIV care between June 2015 and January 2016. Given known potential differences in delivery approaches, we stratified settings as primary care or specialist settings, and described their structure, geographic location, populations served, health human resources, technological resources, and available clinical services. We received responses from 22 of 43 contacted care settings located in seven Canadian provinces (51.2% response rate). The total number of patients and HIV patients served by the participating settings was 38,060 and 17,678, respectively (mean number of HIV patients in primary care settings = 1,005, mean number of HIV patients in specialist care settings = 562). Settings were urban for 20 of the 22 (90.9%) clinics and 14 (63.6%) were entirely HIV focused. Primary care settings were more likely to offer preventative services (e.g., cervical smear, needle exchange, IUD insertion, chronic disease self-management program) than specialist settings. The study illustrates diversity in Canadian HIV care settings. All settings were team based, but primary care settings offered a broader range of preventative services and comprehensive access to mental health services, including addictions and peer support.

The Syndemic of Opioid Misuse, Overdose, HCV, and HIV: Structural-Level Causes and Interventions

PURPOSE OF REVIEW

This article reviews the case for recognizing (1) the epidemics of opioid misuse, overdose, hepatitis C virus, and HIV as a syndemic and (2) the importance of examining and addressing structural factors in responses to this syndemic. We focus on the current syndemic in the US, but also consider data from other locations to highlight the issues existing and arising in various contexts.

RECENT FINDINGS

Advances in multi-level theory and statistical methods allow sound ecologic and multi-level analyses of the impact of structural factors on the syndemic. Studies of opioid misuse, overdoses, hepatitis C virus, and HIV demonstrate that area-level access to healthcare, medication-assisted treatment of opioid use disorders, sterile injection equipment, and overdose prevention with naloxone, as well as factors such as opioid marketing, income inequality, intensity of policing activities, and health care policies, are related to the prevalence of substance misuse, overdoses, infection risk, and morbidity. Structural variables can predict area-level vulnerability to the syndemic. The implementation of combined prevention and treatment interventions can control and reverse components of the syndemic. Recognizing and monitoring potent structural factors can facilitate the identification of areas at risk of vulnerability to the syndemic. Further, many structural factors are modifiable through intervention and policy to reduce structural vulnerability and create health-enabling environments. Evidence supports the immediate implementation of broader HCV and HIV testing and substance use screening, medication-assisted treatment, needle/syringe exchange programs, naloxone programs, increased population-level implementation of HCV treatment, and further attention to structural-level factors predicting, and contributing to, area-level vulnerability, such as degrees of opioid marketing, distribution, and prescribing.

Syndemic effect of mental illness and substance use on viral suppression among recently-incarcerated, HIV-infected individuals in the CARE+ Corrections study

Few studies on HIV-related syndemics of co-occurring and mutually reinforcing psychosocial conditions have assessed clinical outcomes in criminal justice (CJ)-involved populations. Baseline data from the CARE+ Corrections study were used to quantify co-occurring mental illness and substance use and examine syndemic effects on viral suppression among 106 CJ-involved HIV-infected individuals. Ninety-one (86%) reported a mental illness diagnosis, 30 (28%) reported hazardous alcohol use, and 61 (58%) were drug dependent. Eighteen (17%) experienced all three conditions. Drug dependence was clustered with mental illness (prevalence odds ratio [POR] 3.20, 95% CI 1.01-10.14) and hazardous alcohol use (POR 2.61, 95% CI 1.03-6.56). The association between syndemic score, representing the number of conditions reported by each individual, and viral suppression was not statistically significant, although 86% of participants with none of these conditions were virally suppressed, compared to 56% of those with all three (p = 0.56). Mental illness and substance use were concentrated in this sample, indicating a need for integrated care services.

The Impact of Psychosocial Factors on Health and Retention Outcomes for People Living With HIV: Implications for Rehabilitation Counselors and Educators

Despite medical advancements that have significantly improved the health outcomes of people living with HIV (PLWH), many do not achieve optimal health outcomes due to psychosocial barriers. This 5-year retrospective longitudinal study draws upon the International Classification of Functioning, Disability, and Health (ICF) framework to conceptualize the relationships between personal and environmental factors and health and retention outcomes among a sample of 704 PLWH in Pennsylvania. A generalized estimated equations (GEE) model was used to model retention in care outcomes (at least one medical visit every 6 months) and a general linear mixed (GLM) model was used to analyze immune system health outcomes (CD4%). This exploratory study reveals that gender, age, race, use of antiretroviral (ARV) medications, use of case management service, mental health diagnosis, and alcohol use were significantly associated with retention in care, whereas race, ethnicity, gender, mental health treatment, use of ARV medications, use of case management services, and retention in care status were significantly associated with the immune system health outcome of CD4%. The results suggest a need for rehabilitation interventions to address key psychosocial issues, as rehabilitation counselors have a unique skill set to address the medical case management needs of individuals with HIV. Implications for rehabilitation counselors and educators are discussed.

Syndemic Indicators Predict Poor Medication Adherence and Increased Health Care Utilization for Urban HIV-Positive Men Who Have Sex with Men

Research on men who have sex with men (MSM) has uncovered psychosocial factors (syndemic indicators) that are associated additively with poor health. To test these relations in a sample of HIV-positive MSM, we enrolled 166 patients from two HIV clinics. We investigated relations between syndemic indicators and outcomes including medication nonadherence, condomless anal sex (CAS), and healthcare utilization. A large proportion of participants reported each syndemic indicator: polysubstance use 43%, suicide attempt 28%, childhood sexual abuse 39%, partner abuse 64%. Analyses confirmed an additive effect, whereby endorsing 1+ indicator was associated with increased odds of medication nonadherence and medical hospitalization.

Identifying Patterns of Social and Economic Hardship Among Structurally Vulnerable Women: A Latent Class Analysis of HIV/STI Risk

Women who are structurally vulnerable are at heightened risk for HIV/STIs. Identifying typologies of structural vulnerability that drive HIV/STI risk behavior is critical to understanding the nature of women's risk. Latent class analysis (LCA) was used to classify exotic dancers (n = 117) into subgroups based on response patterns of four vulnerability indicators. Latent class regression models tested whether sex- and drug-related risk behavior differed by vulnerability subgroup. Prevalence of vulnerability indicators varied across housing instability (39%), financial insecurity (39%), limited education (67%), and arrest history (36%). LCA yielded a two-class model solution, with 32% of participants expected to belong to a "high vulnerability" subgroup. Dancers in the high vulnerability subgroup were more likely to report sex exchange (OR = 8.1, 95% CI, 1.9-34.4), multiple sex partnerships (OR = 6.4, 95% CI, 1.9-21.5), and illicit drug use (OR = 17.4, 95% CI, 2.5-123.1). Findings underscore the importance of addressing inter-related structural factors contributing to HIV/STI risk.

Interpersonal Attacks on the Dignity of Members of HIV Key Populations: A Descriptive and Exploratory Study

Attacks on peoples' dignity help to produce and maintain stigmatization and interpersonal hostility. As part of an effort to develop innovative measures of possible pathways between structural interventions or socially-disruptive Big Events and HIV outbreaks, we developed items to measure dignity denial. These measures were administered to 300 people who inject drugs (PWID), 260 high-risk heterosexuals who do not inject drugs, and 191 men who have sex with men who do not inject drugs (MSM). All of the PWID and many of the high risk heterosexuals and MSM were referred to our study in 2012-2015 by a large New York city study that used respondent-driven sampling; the others were recruited by chain-referral. Members of all three key populations experienced attacks on their dignity fairly often and also reported frequently seeing others' dignity being attacked. Relatives are major sources of dignity attacks. MSM were significantly more likely to report having their dignity attacked by police officers than were the other groups. 40 % or more of each key population reported that dignity attacks are followed "sometimes" or more often both by using more drugs and also by using more alcohol. Dignity attacks and their health effects require more research and creative interventions, some of which might take untraditional forms like social movements.

Substance Use Disorders, Violence, Mental Health, and HIV: Differentiating a Syndemic Factor by Gender and Sexuality

This paper measures syndemic substance use disorder, violence, and mental health and compares the syndemic among HIV-infected heterosexual men, heterosexual women, and men who have sex with men (MSM). Data were from a sample of high needs substance-using, HIV-infected people in South Florida between 2010 and 2012 (n = 481). We used confirmatory factor analysis to measure a syndemic latent variable and applied measurement invariance models to identify group differences in the data structure of syndemic co-morbidities among heterosexual men, heterosexual women, and MSM. We found that variables used to measure the syndemic fit each sub-group, supporting that substance use disorder, violence, and mental health coincide in HIV-infected individuals. Heterosexual men and MSM demonstrated similar syndemic latent variable factor loadings, but significantly different item intercepts, indicating that heterosexual men had larger mean values on substance use disorder, anxiety, and depression than MSM. Heterosexual men and heterosexual women demonstrated significantly different syndemic variable factor loadings, indicating that anxiety and depression contribute more (and substance use contributes less) to the syndemic in heterosexual men compared to heterosexual women. MSM and heterosexual women demonstrated similar syndemic latent variable factor loadings and intercepts, but had significantly different factor residual variances indicating more variance in violent victimization and depression for MSM and more variance in stress for heterosexual women than what is captured by the observed syndemic indicators. Furthermore, heterosexual women had a larger syndemic factor mean than MSM, indicating that the syndemic burden is greater among heterosexual women than MSM. Our findings support that measurement invariance can elucidate differences in the syndemic to tailor interventions to sub-group needs.

Club drugs and alcohol abuse predicted dropout and poor adherence among methadone maintenance treatment patients in Guangzhou, China

Club drugs and alcohol abuse are prevalent among methadone maintenance treatment (MMT) patients. However, little is known about the association between these abuse and treatment outcomes among MMT patients. The aim of this study was to examine the prevalence of club drugs and alcohol abuse among MMT patients and to investigate the associations between these abuse and treatment outcomes - dropout and poor adherence. In this one-year cohort study conducting in Guangzhou, China, data including background characteristics, club drugs use in the last six months, alcohol use history and treatment-related information was collected. Cox regression analyses and log-binomial regression analyses were applied to identify the associations between these abuse and dropout and poor adherence, respectively. Thirty-seven participants (9.2%) admitted to the use of at least one type of club drugs in the last six months and 88 (21.9%) were identified as alcohol abusers. Of all participants, 21.0% had dropped out of treatment and 27.7% exhibited poor adherence during the study period. Adjusting for significant background variables, use of at least one type of club drugs [hazards ratio (HR) = 1.90, 95% confidence interval (CI) = 1.01-3.56] and use of methamphetamine in the last six months (HR = 2.26, 95% CI = 1.15-4.43) significantly predicted dropout. Frequency of having six or more drinks on one drinking occasion when drinking [relative risk (RR) = 1.87, 95% CI = 1.16-2.95] significantly predicted poor adherence. Our findings indicated that club drugs and alcohol abuse predicted dropout and poor adherence among MMT patients. Early identification and intervention for the abuse should be taken into consideration when developing interventions tailored to improve treatment outcomes among MMT patients.

The interactive effects of social support and physical functioning on HIV medical outcomes among African Americans whom inject drugs

Research suggests a syndemic of substance use, mental illness, and familial conflict is associated with poor HIV medical outcomes among African American persons living with HIV (PLHIV). Social support may facilitate positive health outcomes. This study explores psychosocial correlates of HIV medical outcomes, defined as undetectable viral load (UVL) and acute care minimization. Data were from baseline of the BEACON study (N = 351). UVL was ≤40 copies/mL. Acute care minimization was defined as no ER visits and/or hospitalizations in 6 months. Descriptive statistics and Poisson regression were implemented (N = 351). Moderate syndemic burden was associated with viral suppression. Individuals with main partner caregivers had 35% higher likelihood of viral suppression than individuals whose main supporters were neither kin nor main partners (adjusted point-prevalence rate ratio [APR] = 1.35; 95% CI [1.05, 1.74]). Surprisingly, individuals with more health-related support were more likely to use acute care than individuals with less health-related support (p<.05). Interaction analyses showed that physical function modified the relationship between main supporter type and acute care minimization. Results suggest that social support receipt was not consistently associated with HIV medical outcomes. Conversely, higher syndemic burden may have facilitated positive outcomes through necessitating increased rates of health care engagement. Health care professionals should elicit discussion of social support to strengthen PLHIVs' and their supporters' relationships to improve their health. Results highlight the need for culturally tailored interventions to improve HIV medical outcomes among African American PLHIV substance users.

Clinical ethics issues in HIV care in Canada: an institutional ethnographic study

BACKGROUND

This is a study involving three HIV clinics in the Canadian provinces of Newfoundland and Labrador, and Manitoba. We sought to identify ethical issues involving health care providers and clinic clients in these settings, and to gain an understanding of how different ethical issues are managed by these groups.

METHODS

We used an institutional ethnographic method to investigate ethical issues in HIV clinics. Our researcher conducted in-depth semi-structured interviews, compiled participant observation notes, and studied health records in order to document ethical issues in the clinics, and to understand how health care providers and clinic clients manage and resolve these issues.

RESULTS

We found that health care providers and clinic clients have developed work processes for managing ethical issues of various types: conflicts between client-autonomy and public health priorities ("treatment as prevention"), difficulties associated with the criminalization of nondisclosure of HIV positive status, challenges with non-adherence to HIV treatment, the protection of confidentiality, barriers to treatment access, and negative social determinants of health and well-being.

CONCLUSIONS

Some ethical issues resulted from structural disadvantages experienced by clinic clients. The most striking findings in our study were the negative social determinants of health and well-being experienced by some clinic clients - such as experiences of violence and trauma, poverty, racism, colonization, homelessness, and other factors affecting well-being such as problematic substance use. These negative determinants were at the root of other ethical issues, and are themselves of ethical concern.

Drug use and health behaviour among German men who have sex with men: Results of a qualitative, multi-centre study

Background

Men who have sex with men (MSM) are a risk group for new HIV infections. Drug use among men who have sex with men is often accompanied by risky sexual behaviours. Local AIDS help centres and gay advice centres are recording an increase in drug use among MSM clients in Germany. This study examines reasons for drug use and drug use contexts for MSM, including syndemic factors and experiences of social support.

Methods

The study is based on a qualitative research approach. We conducted 14 structured, in-depth interviews with substance-using MSM in three German cities. An interview guidance document was used that was developed on the basis of the syndemic approach. Data analysis was based on structured analysis of content.

Results

The MSM interviewed had extensive experience of drug use, in particular amyl nitrate, amphetamines, methamphetamine, ketamine, cocaine and cannabis. The drugs were used both at parties and in connection with sexual experiences (chemsex). Twelve men said that they had an existing HIV infection at the time of the interview. The men also reported experiences of violence and discrimination because of their sexual orientation. The social networks of the MSM and dating apps are highly relevant for experiencing chemsex. Certain places in the MSM community also have an impact on drug purchase, drug consumption and chemsex sessions.

Conclusions

MSM are a group that is vulnerable to psychological problems, in particular problematic drug use. This group requires specific help from drug services and AIDS support services that are orientated towards the life situation and substance use contexts of the clients. Both support systems should work together more closely and network. Furthermore, specific prevention strategies, aimed at both mental and physical well-being, should be developed for substance-using MSM.