The intersectional risk environment of people who use drugs

Opioid use, prescribing and fatal overdose patterns among racial/ethnic minorities in the United States: A scoping review and conceptual risk environment model

ISSUES

To date, there has been no synthesis of research addressing the scale and nuances of the opioid epidemic in racial/ethnic minority populations in the United States that considers the independent and joint impacts of dynamics such as structural disadvantage, provider bias, health literacy, cultural norms and various other risk factors.

APPROACH

Using the "risk environment" framework, we conducted a scoping review on PubMed, Embase and Google Scholar of peer-reviewed literature and governmental reports published between January 2000 and February 2024 on the nature and scale of opioid use, opioid prescribing patterns, and fatal overdoses among racial/ethnic minorities in the United States, while also examining macro, meso and individual-level risk factors.

KEY FINDINGS

Results from this review illuminate a growing, but fragmented, literature lacking standardisation in racial/ethnic classification and case reporting, specifically in regards to Indigenous and Asian subpopulations. This literature broadly illustrates racial/ethnic minorities' increasing nonmedical use of opioids, heightened burdens of fatal overdoses, specifically in relation to polydrug use and synthetic opioids, with notable elevations among Black/Latino subgroups, in addition uneven opioid prescribing patterns. Moreover, the literature implicates a variety of unique risk environments corresponding to dynamics such as residential segregation, provider bias, overpolicing, acculturative stress, patient distrust, and limited access to mental health care services and drug treatment resources, including medications for opioid use disorder.

IMPLICATIONS

There has been a lack of rigorous, targeted study on racial/ethnic minorities who use opioids, but evidence highlights burgeoning increases in usage, especially polydrug/synthetic opioid use, and disparities in prescriptions and fatal overdose risk-phenomena tied to multi-level forms of entrenched disenfranchisement.

CONCLUSION

There is a need for further research on the complex, overlapping risk environments of racial/ethnic minorities who use opioids, including deeper inclusion of Indigenous and Asian individuals, and efforts to generate greater methodological synergies in population classification and reporting guidelines.

Characterising People who inject drugs, and association with HIV infection: A Situation Analysis in Kampala city, Uganda

Background

Uganda has implemented targeted interventions to address the rising burden of injection drug use, yet barriers persist in reaching persons who inject drugs (PWID). This study describes the characteristics of people who inject drugs, physical and mental health states, and associated risk behaviors, to inform the designing of programs that are tailored to client's needs and preferences.

Methods

A cross-sectional survey was conducted between August and December 2023 at selected hotspots in Kampala, interviewing 499 PWID aged ≥18 years. Data was collected using a semi-structured questionnaire administered by peer educators and Uganda Harm Reduction Network (UHRN) counselors. Measurements included socio-demographics, injecting drug use and sexual risk behaviors, and medical history. HIV serostatus was dtermined by self-report and testing for participants who had no recent history of testing and consented to be tested. Binary logistic regression was used to establish the relationship between HIV infection and risky drug- and sexual behaviors of PWID.

Results

Participants were predominantly Ugandan (95.2%), male (73.2%), unmarried (55.9%), unemployed (81.8%), with higher levels of education and varying ages. Mental disorders were prevalent, with 48.7% reporting at least one underlying condition, including depression (30.8%) and anxiety (9.6%). Physical health issues were also noted, with reported cases of fever (32.9%), cough (32.5%), malaria (22%) and sexually transmitted infections (STIs) (15%).Regarding drug use patterns, the majority (82.6%) were introduced to drugs by close acquaintances, with 70.9% categorized as people who inject drugs. HIV prevalence among injecting drug users was 3.7%, with higher rates among females (8.4%) and non-Ugandans (16.7%). Being female and experiencing difficulty accessing sterile injection materials were associated with HIV-positive status, highlighting the complex interplay between socio-demographic factors, risk behaviors, and HIV infection among individuals with injecting drug use Disorder in Uganda.

Conclusion

Our study provides a comprehensive insight into the socio-demographic, mental, physical health, and HIV risk behavoir of PWID in Kampala, Uganda. The findings indicate significant vulnerabilities to injecting drug use, mental disorders, and high-risk behaviors that predispose this population to HIV infection. Despite a low HIV prevalence compared to previous estimates, the interplay between drug use, risky injecting practices, and sexual behaviors suggests an urgent need for targeted interventions to address these intertwined challenges.

Using drugs alone in single room occupancy housing: Understanding environmental drivers of overdose risk

BACKGROUND

Across North America most overdose deaths occur in housing, largely due to individuals using drugs alone. In cities, fatalities are disproportionately concentrated in low-income housing, including single room occupancy (SRO) housing. While research has highlighted how SROs operate as risk environments for various poor outcomes, there has been little attention to specific drug use practices (i.e., using alone) associated with overdose vulnerability in these spaces. This study explores how environmental contexts of SROs shape overdose risks, with specific attention to practices of using drugs alone.

METHODS

In-depth semi-structured interviews were conducted with 30 people who use drugs (PWUD) living in Vancouver SROs. Interviews covered topics such as social-structural environments of housing, drug use practices, and housing-based harm reduction. Thematic analysis drew on the intersectional risk environment framework.

RESULTS

Narratives positioned SROs as extensions of public space, with similar expectations of risks and behaviours as in public spaces. For some participants, using alone in their room was characterized as a practice in claiming privacy within the context of a public existence. Participants highlighted how certain features of SRO's social-structural environments were routinely leveraged against them (e.g., security cameras, staff surveillance), suggesting using alone as a tactic to minimize risks of hyper-surveillance and punitive policies. Further, participants discussed using alone as "safer," describing how this practice mitigated place-based risks of social-structural harms (e.g., violence, criminalization) in ways that eclipsed overdose risk.

CONCLUSION

Using drugs alone may be understood as a spatial negotiation of vulnerability to diverse harms produced by environmental contexts of SROs. Interventions accounting for broader contextual factors (e.g., improvements housing quality/quantity, providing a safer supply of drugs) that render using alone as instrumental to survival, and that reduce the implicit threat of punishment from intensive surveillance and control practices are critical to reduce vulnerability to overdose and other harms.

Public stigma against fentanyl overdose decedents in the United States: A conjoint vignette experiment

The United States is facing a drug overdose crisis, and stigma against people who use drugs is a major roadblock to implementing solutions. Despite the public health importance of understanding and mitigating substance use stigma, prior research has focused mainly on perceptions of individuals with substance use disorders and a limited set of demographic traits. This leaves critical gaps in our understanding of stigma against fentanyl overdose decedents, who represent a much broader group, including people who use substances recreationally. This study develops a more robust understanding of these attitudes through an experimental vignette survey fielded to a national sample of American adults (n = 1432). Respondents were shown two fictional fentanyl overdose obituaries where a complex suite of decedent characteristics-including demographic traits and contexts of substance use-were randomly varied in a conjoint design. Respondents then endorsed one of the two decedents for each of several attitudinal outcomes, including blameworthiness and support for various interventions, and justified their choices in an open-ended format. Results indicate that the public assesses victims of fentanyl overdose meritocratically, making judgments based on personal history and life experience rather than traditional race, class, and gender status beliefs. While certainly a signal of progress on some fronts, this meritocratic lens conflicts with the public health model of addressing the overdose crisis and exposes the alarming persistence of explicit stigma against people who use drugs.

Correlates of overdose among 2711 people who use drugs and live in 7 rural US sites

BACKGROUND

Overdose rates in rural areas have been increasing globally, with large increases in the United States. Few studies, however, have identified correlates of non-fatal overdose among rural people who use drugs (PWUD). The present analysis describes correlates of nonfatal overdose among a large multistate sample of rural PWUD.

METHODS

This is a cross-sectional analysis of data gathered via surveys with PWUD recruited through seven Rural Opioid Initiative (ROI) sites. Descriptive analyses were conducted to assess the prevalence of past 30-day overdose. Generalized estimating equations were used to estimate a series of multivariable models quantifying relationships of select factors to past-month overdose; factors were selected using the Risk Environment Framework.

RESULTS

The multisite sample included 2711 PWUD, 6% of whom reported overdosing in the past 30 days. In the fully adjusted model, houselessness (AOR=2.27, 95%CI[1.48, 3.48]), a positive test result for Hepatitis C infection (AOR=1.73 95%CI[1.18, 2.52]) and heroin/fentanyl use (AOR= 8.58 95%CI [3.01, 24.50]) were associated with an increased risk of reporting past 30-day overdose, while having a high-school education or less was associated with reduced odds of overdose (AOR=0.52, 95% CI[0.37, 0.74]).

CONCLUSION

As in urban areas, houselessness, Hepatitis C infection, and the use of heroin and fentanyl were significant correlates of overdose. Widespread access to overdose prevention interventions - including fentanyl test strips and naloxone - is critical in this rural context, with particular outreach needed to unhoused populations, people living with Hepatitis C, and people using opioids.

Systematic review of cognitive and behavioral strategies used in effective harm reduction interventions for people who use cocaine

OBJECTIVE

The aim of this systematic review is to identify cognitive and behavioral strategies that have been used in effective harm reduction interventions for people who use cocaine.

METHOD

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed, and the search was performed on February 26, 2023 across databases including PsycInfo, PubMed, Scopus, and Web of Science. Studies were included if they (1) report the use of one cognitive or behavioral strategy, (2) have harm reduction as the objective, (3) involve participants who used cocaine as at least one of their substances, (4) be published within the last 10 years, and (5) have a randomized controlled trial design. The Cochrane RoB 2.0 Tool was used to assess risk of bias. The cognitive and behavioral strategies were extracted and organized based on their frequency of use in the studies and their corresponding outcomes.

RESULTS

The final synthesis included k = 10 studies with N = 3,567 participants. Psychoeducation strategies, influence on social norms, personalized feedback, increased self-efficacy and motivational interviewing were the most frequently used promising strategies across studies.

CONCLUSIONS

This review underscores the significance of incorporating cognitive and behavioral strategies within harm reduction interventions, as they represent a promising domain that could enhance the effectiveness of addressing cocaine use.

The relationship between felt stigma and non-fatal overdose among rural people who use drugs

BACKGROUND

Drug overdose deaths in the United States exceeded 100,000 in 2021 and 2022. Substance use stigma is a major barrier to treatment and harm reduction utilization and is a priority target in ending the overdose epidemic. However, little is known about the relationship between stigma and overdose, especially in rural areas. We aimed to characterize the association between felt stigma and non-fatal overdose in a multi-state sample of rural-dwelling people who use drugs.

METHODS

Between January 2018 and March 2020, 2,608 people reporting past 30-day opioid use were recruited via modified chain-referral sampling in rural areas across 10 states. Participants completed a computer-assisted survey of substance use and substance-related attitudes, behaviors, and experiences. We used multivariable logistic regression with generalized estimating equations to test the association between felt stigma and recent non-fatal overdose.

RESULTS

6.6% of participants (n = 173) reported an overdose in the past 30 days. Recent non-fatal overdose was significantly associated with felt stigma after adjusting for demographic and substance use-related covariates (aOR: 1.47, 95% CI: 1.20-1.81). The association remained significant in sensitivity analyses on component fear of enacted stigma items (aOR: 1.48, 95% CI: 1.20-1.83) and an internalized stigma item (aOR: 1.51, 95% CI: 1.07-2.14).

CONCLUSIONS

Felt stigma related to substance use is associated with higher risk of non-fatal overdose in rural-dwelling people who use drugs. Stigma reduction interventions and tailored services for those experiencing high stigma are underutilized approaches that may mitigate overdose risk.

'Change creates change' - older female sex workers' experiences through the early COVID-19 pandemic

COVID-19 and associated policy responses created unique social, economic and health risks for sex workers. Through semi-structured interviews we explored pre- and early COVID-19 experiences and work practices of ten cisgender female sex workers 50 years of age and older in Queensland, Australia, analysing the findings using a risk environment framework. Throughout early 2020, participants navigated a complex risk environment, managing economic needs, health and safety, occupational stigma and policing. Australia's policy responses altered the risks and opportunities available to participants. Half the participants continued sex work and half stopped sex work with some accessing economic support and withdrawing superannuation savings. Those who continued sex work drew on life and work experience to reassess changing health, stigma, and policing risks, and adapted their work strategies by increasing client screening and modifying services. Participants relied on information from peer networks and organisations to guide work practices but remained wary of contact tracing, police and the media. Decriminalisation of sex work and the strengthening of sex worker organisation and government partnerships are important in embedding equity in responses to ongoing and new public health threats.

Kentucky Outreach Service Kiosk (KyOSK) Study protocol: a community-level, controlled quasi-experimental, type 1 hybrid effectiveness study to assess implementation, effectiveness and cost-effectiveness of a community-tailored harm reduction kiosk on HIV, HCV and overdose risk in rural Appalachia

INTRODUCTION

Many rural communities bear a disproportionate share of drug-related harms. Innovative harm reduction service models, such as vending machines or kiosks, can expand access to services that reduce drug-related harms. However, few kiosks operate in the USA, and their implementation, impact and cost-effectiveness have not been adequately evaluated in rural settings. This paper describes the Kentucky Outreach Service Kiosk (KyOSK) Study protocol to test the effectiveness, implementation outcomes and cost-effectiveness of a community-tailored, harm reduction kiosk in reducing HIV, hepatitis C and overdose risk in rural Appalachia.

METHODS AND ANALYSIS

KyOSK is a community-level, controlled quasi-experimental, non-randomised trial. KyOSK involves two cohorts of people who use drugs, one in an intervention county (n=425) and one in a control county (n=325). People who are 18 years or older, are community-dwelling residents in the target counties and have used drugs to get high in the past 6 months are eligible. The trial compares the effectiveness of a fixed-site, staffed syringe service programme (standard of care) with the standard of care supplemented with a kiosk. The kiosk will contain various harm reduction supplies accessible to participants upon valid code entry, allowing dispensing data to be linked to participant survey data. The kiosk will include a call-back feature that allows participants to select needed services and receive linkage-to-care services from a peer recovery coach. The cohorts complete follow-up surveys every 6 months for 36 months (three preceding kiosk implementation and four post-implementation). The study will test the effectiveness of the kiosk on reducing risk behaviours associated with overdose, HIV and hepatitis C, as well as implementation outcomes and cost-effectiveness.

ETHICS AND DISSEMINATION

The University of Kentucky Institutional Review Board approved the protocol. Results will be disseminated in academic conferences and peer-reviewed journals, online and print media, and community meetings.

TRIAL REGISTRATION NUMBER

NCT05657106.

Association between willingness to use an overdose prevention center and probation or parole status among people who use drugs in Rhode Island

BACKGROUND

Overdose prevention centers (OPCs) are being implemented in the United States as a strategy to reduce drug-related mortality and morbidity. Previous studies have suggested that people who use drugs (PWUD) with a history of criminal legal system (CLS) involvement (e.g. current probation/parole) are at greater risk of overdose but may also encounter significant barriers to OPC use. The objective of this study was to explore the association between willingness to use an OPC and probation/parole status in a sample of PWUD in Rhode Island.

METHODS

This study utilized data from the Rhode Island Prescription and Illicit Drug Study, which enrolled adult PWUD from August 2020 to February 2023. We used Pearson's chi-square and Wilcoxon rank-sum tests to assess bivariate associations between willingness to use an OPC and probation/parole status (current/previous/never), as well as other sociodemographic and behavioral characteristics. In multivariable Poisson analyses, we examined the association between willingness to use an OPC and probation/parole status, adjusting for key sociodemographic and behavioral characteristics.

RESULTS

Among 482 study participants, 67% were male, 56% identified as white, 20% identified as Hispanic/Latine, and the median age was 43 (IQR 35-53). Nearly a quarter (24%) had never been on probation/parole, 44% were not currently on probation/parole but had a lifetime history of probation and parole, and 32% were currently on probation/parole. Most participants (71%) reported willingness to use an OPC, and in both bivariate and multivariable analyses, willingness to use an OPC did not vary by probation/parole status. Crack cocaine use and lifetime non-fatal overdose were associated with greater willingness to use an OPC (all p < 0.05).

CONCLUSIONS

These data demonstrate high willingness to use OPC among PWUD in Rhode Island regardless of CLS-involvement. As OPCs begin to be implemented in Rhode Island, it will be imperative to engage people with CLS-involvement and to ensure access to the OPC and protection against re-incarceration due to potential barriers, such as police surveillance of OPCs.

Factors Associated With Indirect Exposure to and Knowledge of Fentanyl Among Youth

PURPOSE

Using data from an online assessment of youth in the United States, this study examined factors associated with youth's indirect exposure to fentanyl; factors related to youth's level of knowledge of fentanyl; and sources of substance use information obtained by youth.

METHODS

This is a secondary analysis of data from a cross-sectional online assessment of youth ages 13 to 18 in the United States in 2022. Participants self-reported on substance use knowledge and concerns, indirect exposure to substance use, access to substance use information and resources, the extent to which youth discussed drug use harms with someone, and COVID-related stress.

RESULTS

Analyses revealed that most youth did not have knowledge of fentanyl even though they reported indirect likely exposure to fentanyl. Youth concerned about alcohol or drug use in their own life were less likely to have knowledge of fentanyl and more likely to know someone who, if using drugs, would likely be exposed to fentanyl. A significant risk factor of indirect likely exposure to fentanyl was COVID-related stress. Prevalent sources of information included the internet, social media, friends or peers, and school classes.

DISCUSSION

While youth may have close proximity to fentanyl exposure and a degree of understanding of fentanyl, there is a general lack of knowledge of the substance, a critical gap that future substance use prevention initiatives could fill.

Estimation of place-based vulnerability scores for HIV viral non-suppression: an application leveraging data from a cohort of people with histories of using drugs

The relationships between place (e.g., neighborhood) and HIV are commonly investigated. As measurements of place are multivariate, most studies apply some dimension reduction, resulting in one variable (or a small number of variables), which is then used to characterize place. Typical dimension reduction methods seek to capture the most variance of the raw items, resulting in a type of summary variable we call "disadvantage score". We propose to add a different type of summary variable, the "vulnerability score," to the toolbox of the researchers doing place and HIV research. The vulnerability score measures how place, as known through the raw measurements, is predictive of an outcome. It captures variation in place characteristics that matters most for the particular outcome. We demonstrate the estimation and utility of place-based vulnerability scores for HIV viral non-suppression, using data with complicated clustering from a cohort of people with histories of injecting drugs.

"It would really support the wider harm reduction agenda across the board": A qualitative study of the potential impacts of drug checking service delivery in Scotland

Drug checking services (DCS) enable individuals to voluntarily submit a small amount of a substance for analysis, providing information about the content of the substance along with tailored harm reduction support and advice. There is some evidence suggesting that DCS may lead to behaviour and system change, with impacts for people who use drugs, staff and services, and public health structures. The evidence base is still relatively nascent, however, and several evidence gaps persist. This paper reports on qualitative interviews with forty-three participants across three Scottish cities where the implementation of community-based DCS is being planned. Participants were drawn from three groups: professional participants; people with experience of drug use; and affected family members. Findings focus on perceived harm reduction impacts of DCS delivery in Scotland, with participants highlighting the potential for drug checking to impact a number of key groups including: individual service users; harm reduction services and staff; drug market monitoring structures and networks; and wider groups of people who use and sell drugs, in shaping their interactions with the drug market. Whilst continued evaluation of individual health behaviour outcomes is crucial to building the evidence base for DCS, the findings highlight the importance of extending evaluation beyond these outcomes. This would include evaluation of processes such as: information sharing across a range of parties; engagement with harm reduction and treatment services; knowledge building; and increased drug literacy. These broader dynamics may be particularly important for evaluations of community-based DCS serving individuals at higher-risk, given the complex relationship between information provision and health behaviour change which may be mediated by mental and physical health, stigma, criminalisation and the risk environment. This paper is of international relevance and adds to existing literature on the potential impact of DCS on individuals, organisations, and public health structures.

Community-level determinants of stakeholder perceptions of community stigma toward people with opioid use disorders, harm reduction services and treatment in the HEALing Communities Study

BACKGROUND

Community stigma toward people with opioid use disorder (OUD) can impede access to harm reduction services and treatment with medications for opioid use disorder (MOUD). Such community OUD stigma is partially rooted in community-level social and economic conditions, yet there remains a paucity of large-scale quantitative data examining community-level factors associated with OUD stigma. We examined whether rurality, social inequity, and racialized segregation across communities from four states in the HEALing Communities Study (HCS) were associated with 1) greater perceived community stigma toward people treated for OUD, 2) greater perceived intervention stigma toward MOUD, and 3) greater perceived intervention stigma toward naloxone by community stakeholders in the HCS.

METHODS

From November 2019-January 2020, a cross-sectional survey about community OUD stigma was administered to 801 members of opioid overdose prevention coalitions across 66 communities in four states prior to the start of HCS intervention activities. Bivariate analyses assessed pairwise associations between community rural/urban status and each of the three stigma variables, using linear mixed effect modeling to account for response clustering within communities, state, and respondent sociodemographic characteristics. We conducted similar bivariate analyses to assess pairwise associations between racialized segregation and social inequity.

RESULTS

On average, the perceived community OUD stigma scale score of stakeholders from rural communities was 4% higher (β=1.57, SE=0.7, p≤0.05), stigma toward MOUD was 6% higher (β=0.28, SE=0.1, p≤0.05), and stigma toward naloxone was 10% higher (β=0.46, SE=0.1, p≤0.01) than among stakeholders from urban communities. No significant differences in the three stigma variables were found among communities based on racialized segregation or social inequity.

CONCLUSION

Perceived community stigma toward people treated for OUD, MOUD, and naloxone was higher among stakeholders in rural communities than in urban communities. Findings suggest that interventions and policies to reduce community-level stigma, particularly in rural areas, are warranted.

Effect of incarceration and opioid agonist treatment transitions on risk of hospitalisation with injection drug use-associated bacterial infections: A self-controlled case series in New South Wales, Australia

BACKGROUND

Transitional times in opioid use, such as release from prison and discontinuation of opioid agonist treatment (OAT), are associated with health harms due to changing drug consumption practices and limited access to health and social supports. Using a self-controlled (within-person) study design, we aimed to understand if these transitions increase risks of injection drug use-associated bacterial infections.

METHODS

We performed a self-controlled case series among a cohort of people with opioid use disorder (who had all previously accessed OAT) in New South Wales, Australia, 2001-2018. The outcome was hospitalisation with injecting-related bacterial infections. We divided participants' observed days into time windows related to incarceration and OAT receipt. We compared hospitalization rates during focal (exposure) windows and referent (control) windows (i.e., 5-52 weeks continuously not incarcerated or continuously receiving OAT). We estimated adjusted incidence rate ratios (aIRR) using conditional logistic regression, adjusted for time-varying confounders.

RESULTS

There were 7590 participants who experienced hospitalisation with injecting-related bacterial infections (35% female; median age 38 years; 78% hospitalised with skin and soft-tissue infections). Risk for injecting-related bacterial infections was elevated for two weeks following release from prison (aIRR 1.45; 95%CI 1.22-1.72). Risk was increased during two weeks before (aIRR 1.89; 95%CI 1.59-2.25) and after (aIRR 1.91; 95%CI 1.54-2.36) discontinuation of OAT, and during two weeks before (aIRR 3.63; 95%CI 3.13-4.22) and after (aIRR 2.52; 95%CI 2.09-3.04) OAT initiation.

CONCLUSION

Risk of injecting-related bacterial infections varies greatly within-individuals over time. Risk is raised immediately after prison release, and around initiation and discontinuation of OAT. Social contextual factors likely contribute to excess risks at transitions in incarceration and OAT exposure.

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.

Demographic patterns and disparities in new HIV diagnoses attributed to injection drug use in the United States

People who inject drugs (PWID) exhibit disproportionate HIV burdens in the United States. We characterized longitudinal patterns and demographic disparities in new HIV diagnoses attributed to injection drug use (IDU) in 2008-2020. Although new IDU-attributed HIV diagnoses fell by 53.9%, new HIV diagnoses remained disproportionately elevated in female (100.9/100 000), Black (258.8/100 000), and Hispanic (131.0/100 000) PWID. Despite considerable declines in new HIV diagnoses, disparities by race/ethnicity and sex persist among US PWID.

Abolition and harm reduction in the struggle for "Care, Not Cages"

Care that is organized around the principles of harm reduction and the movement for police and prison abolition has the potential to uproot and transform structural causes of harm and violence, in the interconnected crises of drug-related harm, policing, and punishment. The United States' crisis of overdose and drug-related harm and its system of policing and punishment are historically and empirically linked phenomena. The abandonment of people whose use of drugs leads to their premature death, in the form of an overdose, is directly and indirectly connected to wider systems of criminalization and incarceration that also produce premature suffering and death. Organizations advocating for harm reduction for people who use drugs (PWUD) and organizations seeking the abolition of police and prisons have developed in parallel albeit with different genealogies. We examine the historical origins, principles, and practical applications of the two movements to identify points of overlap and lessons to be learned for the public health goals of addressing and preventing premature suffering and death in the United States. A case study of Los Angeles (LA) County, where elected officials have promised a new paradigm of care, not punishment, frames our analysis. We show how the principles and strategies of harm reduction and abolition are both necessary to practically realizing a paradigm of care, not punishment, and achieving system transformation.

Using ADAPT-ITT framework to tailor evidence-based interventions for addressing methamphetamine use among methadone patients in Vietnam

INTRODUCTION

Methamphetamine use threatens positive treatment outcomes in substance use and HIV, for people with opioid use disorders (POUD) in many countries. This paper describes the adaptation of four evidence-based interventions (EBI) (motivational interviewing, contingency management, Matrix group model and SMS text messaging) for treating methamphetamine use among POUD receiving methadone maintenance therapy in Vietnam.

METHODS

Following the ADAPT-ITT (Assessment-Decision-Administration-Production-Topical experts-Training-Testing) framework, we conducted 16 focus group discussions with POUD (n = 25) and providers (n = 22) at four methadone clinics in two largest cities (Hanoi in the North, Ho Chi Minh City in the South) to assess patterns of methamphetamine use and to get feedback on proposed EBIs. The proposed EBIs were properly adapted and used to train providers in two of the four methadone clinics. The revised EBIs were tested over 12 weeks among 42 POUD on methadone who use methamphetamine. Post-intervention feedback served to fine-tune the revised EBIs.

RESULTS

Insights about patterns of methamphetamine use suggested that EBIs should focus on different triggers to methamphetamine use among POUD receiving methadone treatment in the two cities. All EBIs should emphasise family-related topics to build a strong motivation for treatment. Participants suggested when, where and how each EBI should be delivered. Most participants were satisfied with the adapted EBIs. Limited human resources at methadone clinics might hinder implementation of the adapted EBIs.

DISCUSSION AND CONCLUSIONS

We successfully completed the adaptation of EBIs for POUD who use methamphetamine on methadone in Vietnam. The pilot testing of the adapted EBIs demonstrated feasibility and acceptability.

TRIAL REGISTRATION

NCT04706624. Registered 13 January 2021. https://clinicaltrials.gov/ct2/show/NCT04706624.

"As safe as possible": a qualitative study of opioid withdrawal and risk behavior among people who use illegal opioids

BACKGROUND

Opioid withdrawal is a regular occurrence among many people who use illicit opioids (PWUIO) that has also been shown to increase their willingness to engage in risk-involved behavior. The proliferation of fentanyl in the illicit opioid market may have amplified this relationship, potentially putting PWUIO at greater risk of negative health outcomes. Understanding the relationship between withdrawal and risk-involved behavior may also have important implications for the ways that problematic drug use is conceptualized, particularly in disease models of addiction, which position risk behavior as evidence of pathology that helps to justify ontological distinctions between addicts and non-addicts. Examining withdrawal, and its role in PWUIO's willingness to engage in risk, may aid in the development of alternative theories of risk involvement and create discursive spaces for de-medicalizing and de-othering people who use illegal drugs.

METHODS

This article is based on 32 semi-structured interviews with PWUIO in the New York City area who also reported recent withdrawal experience. Interviews were conducted remotely between April and August 2022 and recorded for later transcription. Data were then coded and analyzed based on a combination of inductive and deductive coding strategies and informed by the literature.

RESULTS

Participants described a strong relationship between withdrawal and their willingness to engage in risk-involved behavior that was exacerbated by the proliferation of fentanyl. Yet, their descriptions did not align with narratives of risk as a product of bad decisions made by individuals. Rather, data demonstrated the substantial role of social and structural context, particularly drug policies like prohibition and criminalization, in the kinds of risks that PWUIO faced and their ability to respond to them.

CONCLUSIONS

Withdrawal should be taken more seriously both from an ethical perspective and as an important catalyst of risk behavior. However, theories that position activities taken to avoid withdrawal as irrational and as evidence of pathology are poorly aligned with the complexity of PWUIO's actual lives. We recommend the use of less deterministic and less medicalized theories of risk that better account for differences between how people view the world, and for the role of socio-structural forces in the production of risk.

Caring for coca, living with chemicals: Towards ecological harm reduction

In this paper, we show how the materialisation of chemical harms linked to the cultivation of coca and its processing into coca paste reside in a wider politics of structural violence which is also situated ecologically. Drawing on the qualitative interview accounts of coca farmers in Putumayo, Colombia, we attend to practices of care in the field and in the laboratory. We look first at chemicals used in coca's cultivation (herbicides, fertilizers, pesticides), and second at chemicals (such as sulphuric acid, sodium carbonate, magnesium permanganate) used in the processing of coca leaf into paste (before the paste is sold on for refinement into cocaine). Our analysis highlights the tensions which inevitably arise in the balance and multiplicities of care - for crops, livelihood, and environment. We trace how farmers' narratives of the neutralisation of chemical risks habituate chemical harms as mundane, even uneventful, in an economic imperative to 'carry on as normal' in the coca economy. We emphasise health and harm as matters of care which not only affect humans but living environments. Accounts of 'risk environment' can give insufficient attention to Nature, and this leads us to consider 'ecological harm reduction'.

Overdose education and naloxone distribution program design informed by people who use drugs and naloxone distributors

People who use drugs (PWUD) are the most directly affected by the overdose epidemic. However, they are not often targets of overdose education and naloxone distribution (OEND) programs. Instead, these programs target friends or family members of people prescribed opioids or general community members. This study aimed to understand the perspectives of PWUD and community naloxone distributors on OEND program design. We used a community-based participatory research model to elucidate participant perspectives on what OEND programs should look like in the context of each individual's specific risk environment. We conducted semi-structured in-depth interviews with PWUD and naloxone distributors (n = 30) in New Brunswick and Newark, New Jersey between February and November of 2022. We analyzed interviews using thematic analysis and identified the following themes: increasing naloxone knowledge, peer-based naloxone access, increasing PWUD-informed OEND program design, and desired broader OEND program scope. All Participants knew what naloxone was and emphasized that naloxone needed to be ubiquitous in the community. Participants prioritized peer-based distribution, integrating distribution into community organizations, and addressing psychosocial issues related to naloxone administration and drug use. In summary, PWUD and community naloxone distributors emphasized peer-led community naloxone distribution that prioritized novel ways for PWUD to access naloxone. OEND program design should prioritize PWUD's perspectives and direct community naloxone distribution.

Social and structural determinants of injection drug use-associated bacterial and fungal infections: A qualitative systematic review and thematic synthesis

BACKGROUND AND AIMS

Injection drug use-associated bacterial and fungal infections are increasingly common, and social contexts shape individuals' injecting practices and treatment experiences. We sought to synthesize qualitative studies of social-structural factors influencing incidence and treatment of injecting-related infections.

METHODS

We searched PubMed, EMBASE, Scopus, CINAHL and PsycINFO from 1 January 2000 to 18 February 2021. Informed by Rhodes' 'risk environment' framework, we performed thematic synthesis in three stages: (1) line-by-line coding; (2) organizing codes into descriptive themes, reflecting interpretations of study authors; and (3) consolidating descriptive themes into conceptual categories to identify higher-order analytical themes.

RESULTS

We screened 4841 abstracts and included 26 qualitative studies on experiences of injecting-related bacterial and fungal infections. We identified six descriptive themes organized into two analytical themes. The first analytical theme, social production of risk, considered macro-environmental influences. Four descriptive themes highlighted pathways through which this occurs: (1) unregulated drug supply, leading to poor drug quality and solubility; (2) unsafe spaces, influenced by policing practices and insecure housing; (3) health-care policies and practices, leading to negative experiences that discourage access to care; and (4) restrictions on harm reduction programmes, including structural barriers to effective service provision. The second analytical theme, practices of care among people who use drugs, addressed protective strategies that people employ within infection risk environments. Associated descriptive themes were: (5) mutual care, including assisted-injecting and sharing sterile equipment; and (6) self-care, including vein health and self-treatment. Within constraining risk environments, some protective strategies for bacterial infections precipitated other health risks (e.g. HIV transmission).

CONCLUSIONS

Injecting-related bacterial and fungal infections are shaped by modifiable social-structural factors, including poor quality unregulated drugs, criminalization and policing enforcement, insufficient housing, limited harm reduction services and harmful health-care practices. People who inject drugs navigate these barriers while attempting to protect themselves and their community.

Trends in deaths following drug use in England before, during, and after the COVID-19 lockdowns

Aim

This research aimed to describe how the characteristics of deaths following drug use changed during the COVID-19 pandemic in England, and how this can inform future strategy to support the health and social care of people who use drugs in future emergency scenarios.

Method

All deaths reported to the National Programme on Substance Abuse Deaths which occurred between January 2018 and December 2021 inclusive were extracted for analysis. Exponential smoothing models were constructed to determine any differences between forecasted vs. actual trends.

Key results

Following the first lockdown period in England there were significant increases in the proportion of people who died at home beyond the 95% confidence bounds of the exponential smoothing model and concurrent decreases in the proportion of people who died in hospital. Whilst the overall proportion of deaths attributable to opioids did not significantly deviate from the forecasted trend, there were significant increases in methadone-related deaths and decreases in heroin/morphine-related death beyond the 95% confidence bounds. The proportion of deaths concluded as suicide increased, as did those implicating antidepressant use. There were no changes in the proportion of deaths following use of other drug classes, alcohol use in combination with psychoactive drugs, or on decedent demographics (gender, age, and drug user status). A small number of deaths due to drug use had COVID-19 infection itself listed as a cause of death (n = 23).

Conclusion

For people who use drugs, the impact of the restrictions due to the COVID-19 pandemic was greater than that of infection from the virus itself. The health and social care strategy for these people needs to be pre-emptively adapted to mitigate against the specific risk factors for fatal drug overdose associated with future emergency scenarios.

The impact of border crossing and imprisonment on injection practices and risk of HIV and hepatitis C infection among men who inject drugs in Nepal

BACKGROUND

In Nepal, personal drug use is criminalized and among people who inject drugs (PWID), the majority of whom are men, movement across the border with India for drug procurement and use is common. Using a risk environment approach, this study examined associations between border crossing and imprisonment with respect to HIV, HCV and injection risk behavior among men who inject drugs in Nepal.

METHODS

This cross-sectional study analyzed data from 1345 participants from 14 districts across Nepal. Explanatory variables were prior imprisonment and past-month border crossing to procure or use drugs. We used multivariable logistic regression to evaluate associations between these variables and HIV, HCV, HIV/HCV co-infection and past-month injection risk behavior among PWID.

RESULTS

Over half of participants reported prior imprisonment (34.6% prior to past year, 21.6% within past year) and Indo-Nepal border crossing in the past year to use or buy drugs (31.2% sometimes, 20.8% often); over one quarter of participants (29.6%) reported both. Imprisonment prior to the past year was associated with higher odds of all outcome variables: HIV (adjusted odds ratio (aOR) 2.44, 95% confidence interval (CI) 1.29-4.59), HCV (aOR 1.51, 95% CI 1.08-2.09), HIV/HCV co-infection (aOR 3.12, 95% CI 1.58-6.14) and injection risk behavior (aOR 1.64, 95% CI 1.20-2.25). Past-year border crossing to procure or use drugs was associated with HCV (aOR 2.06, 95% CI 1.42-2.98) and injection risk behavior (aOR 1.47, 95% CI 1.04-2.10), with larger effect sizes among PWID who reported both border crossing as well as history of imprisonment.

CONCLUSION

Imprisonment and border crossing were associated with injection risk behavior and disease outcomes. These findings indicate a need to implement cross-border disease surveillance and harm reduction initiatives in the Indo-Nepal border region and in Nepali prisons.

Differential risks of syringe service program participants in Central Ohio: a latent class analysis

BACKGROUND

Significant heterogeneity exists among people who use drugs (PWUD). We identify distinct profiles of syringe service program (SSP) clients to (a) evaluate differential risk factors across subgroups and (b) inform harm reduction programming.

METHODS

Latent class analysis (LCA) was applied to identify subgroups of participants (N = 3418) in a SSP in Columbus, Ohio, from 2019 to 2021. Demographics (age, sex, race/ethnicity, sexual orientation, housing status) and drug use characteristics (substance[s] used, syringe gauge, needle length, using alone, mixing drugs, sharing supplies, reducing use, self-reported perceptions on the impact of use, and treatment/support resources) were used as indicators to define latent classes. A five-class LCA model was developed, and logistic regression was then employed to compare risk factors at program initiation and at follow-up visits between latent classes.

RESULTS

Five latent classes were identified: (1) heterosexual males using opioids/stimulants with housing instability and limited resources for treatment/support (16.1%), (2) heterosexual individuals using opioids with stable housing and resources for treatment/support (33.1%), (3) individuals using methamphetamine (12.4%), (4) young white individuals using opioids/methamphetamine (20.5%), and (5) females using opioids/cocaine (17.9%). Class 2 served as the reference group for logistic regression models, and at the time of entry, class 1 was more likely to report history of substance use treatment, overdose, HCV, sharing supplies, and mixing drugs, with persistently higher odds of sharing supplies and mixing drugs at follow-up. Class 3 was more likely to report history of overdose, sharing supplies, and mixing drugs, but outcomes at follow-up were comparable. Class 4 was the least likely to report history of overdose, HCV, and mixing drugs, but the most likely to report HIV. Class 5 was more likely to report history of substance use treatment, overdose, HCV, sharing supplies, and mixing drugs at entry, and higher reports of accessing substance use treatment and testing positive for HCV persisted at follow-up.

CONCLUSIONS

Considerable heterogeneity exists among PWUD, leading to differential risk factors that may persist throughout engagement in harm reduction services. LCA can identify distinct profiles of PWUD accessing services to tailor interventions that address risks, improve outcomes, and mitigate disparities.

Exploring the impact of the COVID-19 pandemic on healthcare and substance use service access among women who inject drugs: a qualitative study

BACKGROUND

The COVID-19 pandemic disrupted healthcare and substance use services engagement, including primary and mental health services as well as residential and outpatient drug treatment. Women who inject drugs (WWID) face known barriers to healthcare and substance use service engagement, which pre-date the COVID-19 pandemic. The impact of COVID-19 on WWID's engagement with healthcare and substance use services, however, remains understudied.

METHODS

To explore the impact of the COVID-19 pandemic on service-seeking and utilization, we conducted in-depth interviews with 27 cisgender WWID in Baltimore, Maryland, in April-September 2021. Iterative, team-based thematic analysis of interview transcripts identified disruptions and adaptations to healthcare and substance use services during the COVID-19 pandemic.

RESULTS

The COVID-19 pandemic disrupted service engagement for WWID through service closures, pandemic safety measures restricting in-person service provision, and concerns related to contracting COVID-19 at service sites. However, participants also described various service adaptations, including telehealth, multi-month prescriptions, and expanded service delivery modalities (e.g., mobile and home delivery of harm reduction services), which overwhelmingly increased service engagement.

CONCLUSION

To build upon service adaptations occurring during the pandemic and maximize expanded access for WWID, it is vital for healthcare and substance use service providers to continue prioritizing expansion of service delivery modality options, like telehealth and the provision of existing harm reduction services through alternative platforms (e.g., mobile services), that facilitate care continuity and increase coverage.

Prevalence and correlates of experiencing drug-related discrimination among people who use drugs presenting at emergency department at high risk of opioid overdose

Objectives

Our objective is to determine if specific sociodemographic characteristics were associated with perceived drug-related discrimination among people who use drugs (PWUD) presenting for care in the emergency department (ED).

Methods

We conducted a secondary analysis of data from the Navigator trial, a randomized control trial of two behavioral interventions in the ED for people at risk of an opioid overdose. Participants included adult patients presenting to two Rhode Island EDs. Eligible participants included those high risk for an opioid overdose, resided or received most of their healthcare in Rhode Island, and were able to provide consent. The primary outcome of this analysis was self-reported feelings of drug-related discrimination by the medical community. The independent variables of interest included race/ethnicity, gender identity, and sexual orientation. Log-binomial multivariable regression models were constructed with all three independent variables of interest and a selection of sociodemographic covariates.

Results

Of 620 eligible participants, 251 (40.5%) reported ever experiencing drug-related discrimination in their lifetime. In the adjusted model, participants who identified as women and participants who identified as LGBQIA+ were more likely to report experiencing drug-related discrimination from the medical community in EDs. Racial/ethnic minority groups were less likely than White (non-Hispanic) participants to report drug-related discrimination.

Discussion

In this study population, White participants reported more drug-related discrimination than their minority counterparts, although female and LGBQIA+ patients reported more discrimination. Future studies should further assess the significance of these intersecting identities on self-reported discrimination. This knowledge could improve ED-based interventions, policies, and services for PWUD.

Exploring Primary Healthcare Experiences and Interest in Mobile Technology Engagement Amongst an Urban Population Experiencing Barriers to Care

Mobile phone-based engagement approaches provide potential platforms for improving access to primary healthcare (PHC) services for underserved populations. We held two focus groups (February 2020) with residents (n = 25) from a low-income urban neighbourhood (downtown Vancouver, Canada), to assess recent healthcare experiences and elicit interest in mobile phone-based healthcare engagement for underserved residents. Note-based analysis, guided by interpretative description, was used to explore emerging themes. Engagement in PHC was complicated by multiple, intersecting personal-level and socio-structural factors, and experiences of stigma and discrimination from care providers. Perceived inadequacy of PHC services and pervasive discrimination reported by participants indicate a significant and ongoing need to improve client-provider relationships to address unmet health needs. Mobile phone-based engagement was endorsed, highlighting phone ownership and client-provider text-messaging, facilitated by non-clinical staff such as peers, as helpful to strengthening retention and facilitating care team connection. Concerns raised included reliability, cost, and technology and language accessibility.

What's in Stock? Drug drought anticipation during COVID-19 among people who use drugs and service providers

BACKGROUND

As with other areas of life, drug markets have been impacted by the COVID-19 pandemic and related restrictions. This article examines how structurally vulnerable people who use drugs (PWUD) experienced and adapted to changes in street drug markets caused by lockdown measures.

METHODS

The article builds on ethnographic fieldwork in two Danish cities in 2020, including in-depth interviews with 22 PWUD, and interviews with 20 service providers, including low-threshold service providers and outreach workers.

RESULTS

The most consistently reported effect of lockdown measures on local drug markets related to increases in cannabis prices. Accounts of changes in drug availability varied greatly, with some participants reporting changing availability while others described the situation as similar to pre-lockdown conditions. Rather than a long-term drug shortage, changes reported by participants related to the anticipated disruption of local markets and drug scarcity, restrictions in access to cash and sellers seeking to capitalize on the crisis.

CONCLUSION

Although no long-term drug scarcity was seen, the anticipation of a shortage was sufficient to impact on local drug market dynamics. Heterogeneity in PWUDs' experiences of access to drug markets during lockdown can to some degree be explained in terms of their varied embeddedness in social networks. While local markets proved resilient to lockdown measures, PWUD less embedded in social networks were more vulnerable to shifts in drug availability and to sellers' over-pricing of drugs.

Using photovoice to understand experiences of opioid use among sexual and gender minority youth in Vancouver, Canada

In Canada, sexual and gender minority youth use opioids at disproportionately high rates. Yet, little is known about the distinct contexts of opioid use within this group, challenging capacity to develop well founded policy and practice supports. This case study aims to examine - in depth - the experiences and contexts of opioid use among a sample of four sexual and gender minority youth in Vancouver, Canada. Qualitative data from photovoice methods and in-depth, semi-structured interviews were collected in 2019. Analysis adopted a reflexive thematic approach from a critical interpretive standpoint, informed by minority stress theory. Three interconnected themes were constructed: (i) minoritised contexts of entry into and continuation of opioid use; (ii) mental health-maintaining and stress-mitigating effects of opioid use in the context of minoritisation; and (iii) intersections of stigma, violence and poverty with opioid use and minoritisation. Findings suggest that the health of sexual and gender minority youth who use opioids is shaped by minority stress and overlapping forms of structural marginalisation. They signal the need for responsive strategies that hold promise in supporting this population, including advancing integrated approaches to substance use and mental health care alongside interventions targeted towards the social and structural determinants of health.

"It's just a perfect storm": Exploring the consequences of the COVID-19 pandemic on overdose risk in British Columbia from the perspectives of people who use substances

BACKGROUND

Despite the implementation and expansion of public health and harm reduction strategies aimed at preventing and reversing overdoses, rates of overdose-related events and fatalities continue to rise in British Columbia. The COVID-19 pandemic created a second, concurrent public health emergency that further exacerbated the illicit drug toxicity crisis, reinforced existing social inequities and vulnerabilities, and highlighted the precariousness of systems in place that are meant to protect the health of communities. By exploring the perspectives of people with recent experience of illicit substance use, this study sought to characterize how the COVID-19 pandemic and associated public health measures influenced risk and protective factors related to unintentional overdose by altering the environment in which people live and use substances, influencing the ability of people who use substances to be safe and well.

METHODS

One-on-one semi-structured interviews were conducted by phone or in-person with people who use illicit substances (n = 62) across the province. Thematic analysis was performed to identify factors shaping the overdose risk environment.

RESULTS

Participants pointed to factors that increased risk of overdose, including: [1] physical distancing measures that created social and physical isolation and led to more substance use alone without bystanders nearby able to respond in the event of an emergency; [2] early drug price spikes and supply chain issues that created inconsistencies in drug availability; [3] increasing toxicity and impurities in unregulated substances; [4] restriction of harm reduction services and supply distribution sites; and [5] additional burden placed on peer workers on the frontlines of the illicit drug toxicity crisis. Despite these challenges, participants highlighted factors that protected against overdose and substance-related harm, including the emergence of new programs, the resiliency of communities of people who use substances who expanded their outreach efforts, the existence of established social relationships, and the ways that individuals consistently prioritized overdose response over concerns about COVID-19 transmission to care for one another.

CONCLUSIONS

The findings from this study illustrate the complex contextual factors that shape overdose risk and highlight the importance of ensuring that the needs of people who use substances are addressed in future public health emergency responses.

The perspectives of street-involved youth who use drugs regarding the acceptability and feasibility of HIV pre-exposure prophylaxis: a qualitative study

Street-involved youth who use drugs (YWUD) face an elevated risk of HIV acquisition and represent a key population for HIV prevention initiatives, including pre-exposure prophylaxis (PrEP). However, little is known regarding the acceptability and feasibility of PrEP uptake and adherence among this multiply-marginalized population. Semi-structured qualitative interviews were conducted with 24 street-involved YWUD (ages 17-24) to examine their perspectives toward PrEP; youth were recruited through a longitudinal prospective cohort study in Vancouver, Canada. Youth reported high levels of ambivalence toward PrEP despite engagement in HIV-related risk behaviors. This ambivalence was driven by misperceptions regarding HIV transmission, including stigmatizing associations between HIV transmission and personal hygiene. Such misperceptions led participants to enact strategies that were ineffective in preventing HIV transmission. Participants contested their inclusion as a "key population" for PrEP, which limited their enthusiasm for PrEP uptake and adherence. Participants also highlighted that wider social-structural inequities (e.g., housing vulnerability, poverty) that produced HIV-related risks were likely to undermine sustained PrEP use. Findings demonstrate the need for tailored implementation strategies to increase PrEP acceptability, including targeted education and anti-stigma interventions to increase awareness about HIV transmission. Interventions should also target structural inequities in order to fully address HIV risk and PrEP ambivalence.

Epidemiology of injecting drug use, prevalence of injecting-related harm, and exposure to behavioural and environmental risks among people who inject drugs: a systematic review

BACKGROUND

People who inject drugs are exposed to various and changing risk environments and are at risk of multiple harms related to injecting drug use (IDU). We aimed to undertake a global systematic review of the prevalence of IDU, key IDU-related harms (including HIV, hepatitis C virus [HCV], and hepatitis B virus [HBV] infection and overdose), and key sociodemographic characteristics and risk exposures for people who inject drugs.

METHODS

We systematically searched for data published between Jan 1, 2017, and March 31, 2022, in databases of peer-reviewed literature (MEDLINE, Embase, and PsycINFO) and grey literature as well as various agency or organisational websites, and disseminated data requests to international experts and agencies. We searched for data on the prevalence, characteristics, and risks of people who inject drugs, including gender, age, sexuality, drug-use patterns, HIV, HCV, and HBV infections, non-fatal overdose, depression, anxiety, and injecting-related disease. Additional data were extracted from studies identified in our previous review. Meta-analyses were used to pool the data where multiple estimates were available for a country. We present country, regional, and global estimates for each variable examined.

FINDINGS

We screened 40 427 reports published between 2017 and 2022, and the 871 eligible reports identified were added to the 1147 documents from the previous review. Evidence of IDU was documented in 190 of 207 countries and territories, and 14·8 million people (95% uncertainty interval [UI] 10·0-21·7) aged 15-64 years globally were estimated to inject drugs. Existing evidence suggests that there might be 2·8 million (95% UI 2·4-3·2) women and 12·1 million (95% UI 11·0-13·3) men who inject drugs globally, and that 0·4% (95% CI 0·3-1·3) of people who inject drugs identify as transgender. The amount of available data on key health and social risks among people who inject drugs varied widely across countries and regions. We estimated that 24·8% (95% CI 19·5-31·6) of people who inject drugs globally had experienced recent homelessness or unstable housing, 58·4% (95% CI 52·0-64·8) had a lifetime history of incarceration, and 14·9% (95% CI 8·1-24·3) had recently engaged in sex work, with substantial geographical variation. Injecting and sexual risk behaviour varied considerably geographically, as did risks of harms. Globally, we estimated that 15·2% (95% CI 10·3-20·9) of people who inject drugs are living with HIV, 38·8% (95% CI 31·4-46·9) have current HCV infection, 18·5% (95% CI 13·9-24·1) have recently overdosed, and 31·7% (95% CI 23·6-40·5) have had a recent skin or soft tissue infection.

INTERPRETATION

IDU is being identified in a growing number of countries and territories that comprise more than 99% of the global population. IDU-related health harms are common, and people who inject drugs continue to be exposed to multiple adverse risk environments. However, quantification of many of these exposure and harms is inadequate and must be improved to allow for better targeting of harm-reduction interventions for these risks.

FUNDING

Australian National Health and Medical Research Council.

Emergency department experiences of people who use drugs who left or were discharged from hospital against medical advice

BACKGROUND

People who use drugs (PWUD) frequent emergency departments at a higher rate than the general population, and experience a greater frequency of soft tissue infections, pneumonia, and chronic conditions such as, HIV/AIDs and hepatitis C. This population has distinct health care considerations (e.g. withdrawal management) and are also more likely to leave or be discharged from hospital against medical advice.

METHODS

This study examines the experiences of PWUD who have left or been discharged from hospital against medical advice to understand the structural vulnerabilities that shape experiences with emergency departments. Semi-structured qualitative interviews were conducted with 30 PWUD who have left or been discharged from hospital against medical advice within the past two years as part of a larger study on hospital care and drug use in Vancouver, Canada.

RESULTS

Findings characterize the experiences and perceptions of PWUD in emergency department settings, and include: (1) stigmatization of PWUD and compounding experiences of discrimination; (2) perceptions of overall neglect; (3) inadequate pain and withdrawal management; and (4) leaving ED against medical advice and a lack of willingness to engage in future care.

CONCLUSIONS

Structural vulnerabilities in ED can negatively impact the care received among PWUD. Findings demonstrate the need to consider how structural factors impact care for PWUD and to leverage existing infrastructure to incorporate harm reduction and a structural competency focused care. Findings also point to the need to consider how withdrawal and pain are managed in emergency department settings.

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.

How the rural risk environment underpins hepatitis C risk: Qualitative findings from rural southern Illinois, United States

BACKGROUND

Hepatitis C virus (HCV) infection has increased among persons who inject drugs (PWID) in the United States with disproportionate burden in rural areas. We use the Risk Environment framework to explore potential economic, physical, social, and political determinants of hepatitis C in rural southern Illinois.

METHODS

Nineteen in-depth semi-structured interviews were conducted with PWID from August 2019 through February 2020 (i.e., pre-COVID-19 pandemic) and four with key informants who professionally worked with PWID. Interviews were recorded, professionally transcribed, and coded using qualitative software. We followed a grounded theory approach for coding and analyses.

RESULTS

We identify economic, physical, policy, and social factors that may influence HCV transmission risk and serve as barriers to HCV care. Economic instability and lack of economic opportunities, a lack of physically available HCV prevention and treatment services, structural stigma such as policies that criminalize drug use, and social stigma emerged in interviews as potential risks for transmission and barriers to care.

CONCLUSION

The rural risk environment framework acknowledges the importance of community and structural factors that influence HCV infection and other disease transmission and care. We find that larger structural factors produce vulnerabilities and reduce access to resources, which negatively impact hepatitis C disease outcomes.

What is a public health approach to substance use? A qualitative systematic review and thematic synthesis

BACKGROUND

Psychoactive substance use and the regulations that govern it both have the potential to lead to harm. A 'public health approach' (PHA) is frequently invoked as a means of addressing these harms, but the term is used in inconsistent and contradictory ways. This study systematically reviewed the English-language academic literature to understand how a public health approach to substance use is defined and described.

METHODS

This review employed thematic synthesis, a methodology designed to rigorously synthesize qualitative evidence. Eligible articles were published in peer-reviewed journals, in the English language, with full text available, and focused primarily on substance use. There were no limits on year of publication. Original research, opinion/commentary, and reviews were included. The searches were conducted in October 2021 in CINAHL, Embase, Medline, PAIS Index, PsycINFO, Scopus, Sociological Abstracts, and Web of Science.

RESULTS

272 articles from 25 countries, published between 1950 and 2021, were synthesized. Definitions of a PHA have changed over time and differ by substance. The most commonly cited characteristics of a PHA were: for alcohol, regulation, e.g. of price and availability (54% of articles); for cannabis: regulation (68%); for illicit drugs: that a PHA is distinct from a criminal justice approach (63%); for opioids: substance use disorder treatment (55%); and for tobacco: regulation (62%).

CONCLUSION

There is no consensus on the definition of a public health approach to substance use, but there is substantial agreement when it comes to PHAs to specific substances. There are also similarities in how they are described for legal substances versus illicit ones. This review found areas of disagreement regarding the extent to which PHAs should focus on individual-level factors. Policymakers, academics, and others developing or implementing PHAs to substance use should be explicit about their aims and objectives - as well as the premises and assumptions underlying them.

Everywhere and for everyone: proportionate universalism as a framework for equitable access to community drug checking

BACKGROUND

Illicit drug overdoses have reached unprecedented levels, exacerbated by the COVID-19 pandemic. Responses are needed that address the increasingly potent and unpredictable drug supply with better reach to a wide population at risk for overdose. Drug checking is a potential response offered mainly within existing harm reduction services, but strategies are needed to increase reach and improve equitable delivery of drug checking services.

METHODS

The purpose of this qualitative study was to explore how to extend the reach of drug checking services to a wide population at risk of overdose. We conducted 26 in-depth interviews with potential service users to identify barriers to service use and strategies to increase equitable delivery of drug checking services. Our analysis was informed by theoretical perspectives on equity, and themes were developed relevant to equitable delivery through attention to quality dimensions of service use: accessibility, appropriateness, effectiveness, safety, and respect.

RESULTS

Barriers to equitable service delivery included criminalization and stigma, geographic and access issues, and lack of cultural appropriateness that deter service use for a broad population with diverse needs. Strategies to enhance equitable access include 1ocating services widely throughout communities, integrating drug checking within existing health care services, reframing away from risk messaging, engaging peers from a broad range of backgrounds, and using discrete methods of delivery to help create safer spaces and better reach diverse populations at risk for overdose.

CONCLUSIONS

We propose proportionate universalism in drug checking as a guiding framework for the implementation of community drug checking as an equity-oriented harm reduction intervention and as a population health response. Both a universal equity-oriented approach and multiple tailored approaches are required to facilitate drug checking services that maximize reach and appropriateness to respond to diverse needs.

A stakeholder-driven framework for measuring potential change in the health risks of people who inject drugs (PWID) during the COVID-19 pandemic

BACKGROUND

People who inject drugs (PWID) have likely borne disproportionate health consequences of the COVID-19 pandemic. PWID experienced both interruptions and changes to drug supply and delivery modes of harm reduction, treatment, and other medical services, leading to potentially increased risks for HIV, hepatitis C virus (HCV), and overdose. Given surveillance and research disruptions, proximal, indirect indicators of infectious diseases and overdose should be developed for timely measurement of health effects of the pandemic on PWID.

METHODS

We used group concept mapping and a systems thinking approach to produce an expert stakeholder-generated, multi-level framework for monitoring changes in PWID health outcomes potentially attributable to COVID-19 in the U.S. This socio-ecological measurement framework elucidates proximal and distal contributors to infectious disease and overdose outcomes, many of which can be measured using existing data sources.

RESULTS

The framework includes multi-level components including policy considerations, drug supply/distribution systems, the service delivery landscape, network factors, and individual characteristics such as mental and general health status and service utilization. These components are generally mediated by substance use and sexual behavioral factors to cause changes in incidence of HIV, HCV, sexually transmitted infections, wound/skin infections, and overdose.

CONCLUSION

This measurement framework is intended to increase the quality and timeliness of research on the impacts of COVID-19 in the context of the current pandemic and future crises. Next steps include a ranking process to narrow the drivers of change in health risks to a concise set of indicators that adequately represent framework components, can be written as measurable indicators, and are quantifiable using existing data sources, as well as a publicly available web-based platform for summary data contributions.

Relationships between places of residence, injury, and death: Spatial and statistical analysis of fatal opioid overdoses across Massachusetts

Understanding the factors associated with where people who use opioids live, where their fatal overdoses occur, and where deaths are recorded can improve our knowledge of local risk environments and inform intervention planning. Through geospatial analyses of death certificate data between 2015 and 2017, we found that a majority of opioid-involved fatal overdoses in Massachusetts occurred at home. Age (adjusted odds ratio [AOR], 1.03; 95% confidence interval [CI], 1.02-1.04), living in a census tract with a higher percentage of crowded households (AOR, 1.04; 95% CI, 1.01-1.08), households without vehicles (AOR, 1.01; 95% CI, 1.00-1.02), and Hispanic ethnicity (AOR, 0.56; 95% CI, 0.42-0.74) were independently associated with fatal overdose at home. Using geographically weighted regression, we identified locations where these associations were stronger and could benefit most from home-based and culturally sensitive overdose prevention efforts, including expanded overdose education and naloxone distribution.

Challenges for drug checking services in Scotland: a qualitative exploration of police perceptions

Background

The impact of policing practices on the engagement of people who use drugs (PWUD) with harm reduction services is well evidenced. Although the police have traditionally taken an enforcement role in responding to drug use, it is increasingly clear that they can play an important part in multiagency delivery of harm reduction interventions. Despite this, there have been no studies exploring police officer perceptions of drug checking services (DCS), which provide analytical testing of client drug samples alongside harm reduction support and advice.

Methods

Semi-structured interviews were conducted with 10 police officers to explore the policing and legal challenges which could be encountered in the delivery of DCS in Scotland.

Results

Participants expressed general support for DCS and described this support as part of a wider organisational shift towards public health-oriented policing. Participants also discussed different potential approaches to the policing of areas surrounding DCS including: formal limits on police presence around the service and/or stop and search powers in relation to personal possession; the effective decriminalisation of personal possession within a specified boundary around the service; and informal agreements between local divisions and DCS outlining expected policing practices. Any formal limitation on the capacity of police officers to respond to community concerns was viewed as problematic and as having the potential to erode public confidence in policing. Participants also highlighted the potential for frontline officers to utilise discretion in ways which could undermine public health goals. Legislative change, or national strategic guidance from relevant stakeholders, was seen as a means of providing ‘cover’, enabling local divisions to support the operation of drug checking.

Conclusions

Despite a small sample of participants, this study summarises key challenges to be addressed in the implementation and operation of DCS in Scotland, and more widely. The paper concludes with suggested opportunities to develop approaches to policing that can facilitate rather than impede implementation and operation of these services.

A Realist Review of How Community-Based Drug Checking Services Could Be Designed and Implemented to Promote Engagement of People Who Use Drugs

With rising numbers of drug-related deaths in the UK and globally, exploration of interventions that seek to reduce drug-related harm is essential. Drug checking services (DCS) allow people to submit drug samples for chemical analysis and receive feedback about the sample, as well as harm reduction advice. The use of DCS is often linked to festival and/or nightlife settings and to so-called 'recreational' drug use, but research has also shown the potential of community-based DCS as an intervention serving more varied demographics of people who use drugs, including more marginalised individuals and those experiencing drug dependence. Whilst there is a growing evidence base on the effectiveness of drug checking as a harm reduction intervention, there is still limited evidence of the underlying mechanisms and processes within DCS which may aid implementation and subsequent engagement of people who use drugs. This presents a challenge to understanding why engagement differs across types of DCS, and how best to develop and deliver services across different contexts and for different populations. To explore the contexts and mechanisms which impact engagement in community-based DCS, a realist review was undertaken to synthesise the international evidence for the delivery and implementation of DCS. There were 133 sources included in the review. From these sources the underlying contexts, mechanisms, and outcomes relating to DCS implementation and engagement were developed and refined into seven programme theories. The findings of this review are theoretically novel and hold practical relevance for the design of DCS, with implications for optimisation, tailoring, and implementing services to reach individuals in different settings.

Understanding injecting drug use in Afghanistan: A scoping review

Background

Several reports have described a growing prevalence of illicit drug use in Afghanistan, with recognition of a recent shift from traditional modes of consumption involving inhalation and oral ingestion to injecting drug use.

Objective

Conduct a comprehensive review of existing literature to map the injecting drug use situation in Afghanistan. The review intends to describe risk factors and impacts of injecting drug use, drug use characteristics and risk behaviours among people who inject drugs (PWID), and access to harm reduction and treatment.

Methods

We searched Embase, Global Health, Medline, PsycINFO, Web of Science, and grey literature to identify English language publications up to March 26^th, 2022. Studies were eligible for inclusion if they explicitly targeted PWID or injecting drug use in Afghanistan and provided information relevant to the review questions. Two reviewers independently screened titles and abstracts for inclusion and extracted information based on the review objectives.

Results

A total of 25 articles were identified representing 15 studies (11 quantitative, 2 qualitative, 2 mixed methods). All but one studies were cross-sectional. In majority of the studies, over 95% of the participants were male and most were conducted over a decade ago, in urban settings, mainly Kabul. Only one study examined risk factors of injecting drug use. Eleven studies described drug use characteristics and 9 reported risk behaviours among PWID. Health and social burden of injecting drug use were reported by 8 and 5 studies, respectively. Nine studies described access to harm reduction and treatment. Afghan PWID had high levels of injecting and sexual risk behaviours compared to global estimates. They reported high prevalence of incarceration and displacement. Access to harm reduction and treatment was very limited. This scoping review revealed important knowledge gaps including a gender gap in research with serious implications for drug policy and substance use care.

Conclusions

Development of a national public health-oriented drug policy and substance use care programme is warranted along with efforts to develop health research capacity to address the need for epidemiological data. The current humanitarian crisis necessitates continued access to evidence-based harm reduction and treatment in Afghanistan.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13011-022-00491-1.

Exploring how greenspace programmes might be effective in supporting people with problem substance use: a realist interview study

BACKGROUND

Greenspace programmes are health projects run outside in nature, typically with the aim of improving mental health. Research suggests that programmes may also be effective in supporting people with problem substance use (PSU), but there is limited understanding of the key components that make them successful for this client group. Previous work has claimed that a realist-informed intervention framework for greenspace programmes for mental health could be transferable to programmes that support people with PSU, and that this could provide insight into the causal processes within programmes. However, this claim is yet to be explored in depth. The aim of this study was to further test, refine, and consolidate the proposed framework to show how greenspace programmes could support people with PSU.

METHODS

Using a realist approach, 17 participants (8 programme staff; 9 wider stakeholders) were interviewed about contexts, mechanisms, and outcomes (CMOs) relative to greenspace programmes for mental health and PSU. Semi-structured interviews were used since they facilitated exploration of the proposed framework but were flexible enough to allow identification of new CMOs for framework refinement. Interviews were audio-recorded, fully transcribed, and analysed inductively and deductively against the proposed framework.

RESULTS

Findings supported the proposed framework and indicated that greenspace programmes support people with poor mental health and PSU due to: feelings of escape; space to reflect; physical activity; self-efficacy; feelings of purpose; relationships; and shared experiences. However, data showed that programmes must also consider: explicit intervention focus to ensure adequate support for clients; existing challenges with funding and stakeholder buy-in; and the impact of COVID-19. Findings allowed development of a refined framework that shows how greenspace programmes can support people with PSU.

CONCLUSION

The findings of this project are theoretically novel and have practical relevance for those designing greenspace programmes by providing recommendations on how to optimise, tailor, and implement future interventions. Findings could be particularly relevant for academic researchers, multidisciplinary health professionals, and for those working in the third sector, developing and delivering greenspace programmes for people to improve their mental health and to support them with PSU.

Drug use behaviors, trauma, and emotional affect following the overdose of a social network member: A qualitative investigation

BACKGROUND

Scant research has examined the influence of overdoses occurring in social networks (i.e., knowing someone who has overdosed) on individual overdose risk. We sought to characterize drug use behaviors of individuals following the overdose of someone in their social network.

METHODS

We conducted semi-structured interviews with 25 people who use drugs and knew someone who overdosed in the prior 90 days. All interviews were conducted in person in Rhode Island from July to October 2021. Data were stratified by drug use behaviors following the overdose of a network member (i.e., risk behaviors, protective behaviors, no change; selected a priori) and analyzed using a thematic analysis variation to identify salient themes.

RESULTS

We identified variation in the effect of knowing someone who overdosed on subsequent drug use behaviors and emotional affect. Several participants described increasing their drug use or using more types of drugs than usual to manage feelings of bereavement and trauma, and a subset of these participants described increased drug use with suicidal intention and increased suicidal ideations following the overdose event. Other participants described reducing their drug use and engaging in protective behaviors in response to heightened perceived overdose risk, protection motivation (i.e., increased motivation to protect oneself), and concern for others. Additionally, some participants reported no change in drug use behaviors, and these participants described already engaging in harm reduction practices, feeling desensitized due to frequent or repeated exposure to overdose, and ambivalence about living.

CONCLUSIONS

Findings suggest a need for enhanced investment in network-based overdose prevention interventions, as well as more robust integration of bereavement support and mental health services in settings that serve people who use drugs. The findings also suggest a need for future research to identify mediators of the effect of overdose occurring in social networks on individual overdose risk.

"It Stays with You for Life": The Everyday Nature and Impact of Police Violence in Toronto's Inner-City

In recent years, police violence has amassed notable international attention from the public, practitioners, and academics alike. This paper explores experiences and perceptions of police violence in Canada, documenting the impacts of direct and vicarious experiences of police violence on inner-city residents. The study employed semi-structured interviews with 45 community members across three Toronto inner-city neighbourhoods. Using a general interview prompt guide, participants were asked a range of questions about their experiences with and perceptions of police, and particularly, of police violence in their community. The interviews were audio recorded, transcribed, thematically coded, and analyzed. All participants reported direct and/or vicarious experiences of police violence, and most described experiencing long-standing, and continual fear that police contact would result in harm to them. Further, participants described a variety of serious and negative outcomes associated with experiencing and/or witnessing police violence. Police violence in Canada is a public health issue that requires an integrated public health policy approach to address the negative outcomes associated with direct and vicarious police violence exposure.

Policy actor views on structural vulnerability in harm reduction and policymaking for illegal drugs: A qualitative study

BACKGROUND

Health risks associated with drug use are concentrated amongst structurally vulnerable people who use illegal drugs (PWUD). We described how Canadian policy actors view structural vulnerability in relation to harm reduction and policymaking for illegal drugs, and what solutions they suggest to reduce structural vulnerability for PWUD.

METHODS

The Canadian Harm Reduction Policy Project is a mixed-method, multiple case study. The qualitative component included 73 semi-structured interviews conducted with harm reduction policy actors across Canada's 13 provinces and territories between November 2016 and December 2017. Interviews explored perspectives on harm reduction and illegal drug policies and the conditions that facilitate or constrain policy change. Our sub-analysis utilized a two-step inductive analytic process. First, we identified transcript segments that discussed structural vulnerability or analogous terms. Second, we conducted latent content analysis on the identified excerpts to generate main findings.

RESULTS

The central role of structural vulnerability (including poverty, unstable/lack of housing, racialization) in driving harm for PWUD was acknowledged by participants in all provinces and territories. Criminalization, in particular, was seen as a major contributor to structural vulnerability by justifying formal and informal sanctions against drug use and, by extension, PWUD. Many participants expressed that their personal understanding of harm reduction included addressing the structural conditions facing PWUD, yet identified that formal government harm reduction policies focused solely on drug use rather than structural factors. Participants identified several potential policy solutions to intervene on structural vulnerability including decriminalization, safer supply, and enacting policies encompassing all health and social sectors.

CONCLUSIONS

Structural vulnerability is salient within Canadian policy actors' discourses; however, formal government policies are seen as falling short of addressing the structural conditions of PWUD. Decriminalization and safer supply have the potential to mitigate immediate structural vulnerability of PWUD while policies evolve to advance social, economic, and cultural equity.