Exploring risk perception and behaviour of homeless injecting drug users diagnosed with hepatitis C

Characterizing Opioid Withdrawal Experiences and Consequences Among a Community Sample of People Who Use Opioids

BACKGROUND

Opioid withdrawal symptoms are a highly salient and consequential health condition experienced by people who use opioids (PWUO). This study utilized qualitative interviews to explore opioid withdrawal experiences and consequences among PWUO in Los Angeles County, USA.

METHODS

Semi-structured qualitative interviews were conducted with 22 PWUO (aged 27-63 years) between May 2021 and May 2022. Participants self-reported opioid and injection drug use in the last 30 days. We employed an inductive thematic approach to systematically code and synthesize textual interview data.

RESULTS

Participants experienced withdrawal symptoms frequently, with many going to great lengths to avoid them. Withdrawal pain was described as incapacitating and interfered with PWUO's ability to sustain regular employment and ensure stable housing. Avoiding withdrawal was described as influential in driving decisions to continue using opioids. Mechanisms for managing withdrawal included using other substances to the point of sedation. PWUO who transitioned from heroin to fentanyl use revealed more frequent, painful, and faster onset of withdrawal symptoms. Adverse withdrawal experiences and fear of precipitated withdrawal from buprenorphine were barriers to treatment initiation and continuation.

CONCLUSION

Withdrawal symptoms among PWUO increase health risk. Improved strategies to treat opioid withdrawal are urgently needed. Solutions such as safe supply and intentional opioid withdrawal interventions (educational trainings, withdrawal comfort kits) are needed to improve withdrawal management and reduce opioid-related harm.

Socioeconomic and psychosocial determinants of substance misuse - a national perspective

Accurate estimates of population drug use and an understanding of the factors that influence substance choice are essential for the development of appropriate and targeted prevention strategies and campaigns. This review aims to provide an overview of the socioeconomic and psychosocial factors that influence substance use patterns within the Australian population through exploration of current and historical examples of substance misuse. Australia's comparatively large online drug market is reflective of the country's relative geographic isolation and high local drug prices. Legislation, particularly relating to cannabis cultivation and personal use, has evolved significantly in response to increased scientific and commercial applications and changing attitudes towards medical and personal use. Methylamphetamine use is disproportionately high, attributed to Australia's geographic location, high rates of local manufacture, steady cost, and increased purity. Despite the increased cost of cocaine over time, the profile of users appears to dictate rates of use. The prevalence of injecting drug use is driven by a lack of education, perceived risk, stigma, and other social factors. Additionally, psychosocial factors also contribute to substance misuse among specific population subgroups such as petrol sniffing among Indigenous Australians. Understanding the reasons for geographical variability in illicit drug use assists in the interpretation of substance-associated behavior in specific groups/populations and in guiding future intervention efforts and predictions of emerging trends. In addition, an understanding of factors influencing local drug usage may assist forensic practitioners in evaluating the occurrence and effects of particular substances that may emerge as significant factors in drug-related deaths.

Development, acceptability and feasibility of a personalised, behavioural intervention to prevent bacterial skin and soft tissue infections among people who inject drugs: a mixed-methods Person-Based Approach study

BACKGROUND

Skin and soft tissue infections (SSTI) among people who inject drugs (PWID) are a public health concern. This study aimed to co-produce and assess the acceptability and feasibility of a behavioural intervention to prevent SSTI.

METHODS

The Person-Based Approach (PBA) was followed which involves: (i) collating and analysing evidence; (ii) developing guiding principles; (iii) a behavioural analysis; (iv) logic model development; and (v) designing and refining intervention materials. Co-production activities with target group representatives and key collaborators obtained feedback on the intervention which was used to refine its design and content. The intervention, harm reduction advice cards to support conversation between service provider and PWID and resources to support safer injecting practice, was piloted with 13 PWID by four service providers in Bristol and evaluated using a mixed-methods approach. Semi-structured interviews were conducted with 11 PWID and four service providers. Questionnaires completed by all PWID recorded demographic characteristics, SSTI, drug use and treatment history. Interviews were analysed thematically and questionnaires were analysed descriptively.

RESULTS

Published literature highlighted structural barriers to safer injecting practices, such as access to hygienic injecting environments and injecting practices associated with SSTI included: limited handwashing/injection-site swabbing and use of too much acidifier to dissolve drugs. Co-production activities and the literature indicated vein care and minimisation of pain as PWID priorities. The importance of service provider-client relationships and non-stigmatising delivery was highlighted through the co-production work. Providing practical resources was identified as important to address environmental constraints to safer injecting practices. Most participants receiving the intervention were White British, male, had a history of SSTI and on average were 43.6 years old and had injected for 22.7 years. The intervention was well-received by PWID and service providers. Intervention content and materials given out to support harm reduction were viewed positively. The intervention appeared to support reflections on and intentions to change injecting behaviours, though barriers to safer injecting practice remained prominent.

CONCLUSIONS

The PBA ensured the intervention aligned to the priorities of PWID. It was viewed as acceptable and mostly feasible to PWID and service providers and has transferability promise. Further implementation alongside broader harm reduction interventions is needed.

Safety and danger: Perceptions of the implementation of harm reduction programs in two communities in Nova Scotia, Canada

People who use substances (PWUS), and specifically individuals who use injection drugs and/or smoke crack cocaine, experience risks which harm reduction programmes can help reduce. Prior to implementing harm reduction programmes, however, it is critical to understand how programme users and others in the community perceive the programmes as their perceptions may influence implementation. A mixed-methods study asked PWUS and key informants about their perceptions of implementing five harm reduction programmes in their communities, including perceptions of the advantages of the programmes, where best to locate them, and community support. Questionnaires were administered to 160 PWUS, and qualitative interviews were conducted with 11 purposefully sampled key informants. Data were collected in one medium-size and one small-size community/municipality in Nova Scotia, Canada, during 2017-2018. SPSS was used to generate descriptive statistics and means from the quantitative data, and the qualitative data were analysed for key themes using thematic analysis. Both PWUS and key informants perceived numerous advantages of the harm reduction programmes, but some key informants suggested that there might be potential opposition to the implementation of additional needle distribution and disposal programmes in some locations and potential opposition to safer consumption sites. Further research is needed to understand why these programmes were viewed as potentially generating opposition, but findings suggest that a key factor is the association of the programmes with 'danger' because the programmes are directly linked with criminalized drug use. In contrast, the three other programmes are linked to 'safety' because naloxone saves lives, peer navigation programmes support access to existing programmes and detoxification programmes are associated with safety through the reduction/elimination of drug use. Legalization/decriminalization of drugs might help to change the association of some programmes with 'danger' and therefore help support the implementation of harm reduction programmes that appear to be perceived by some as linked to danger.

Homelessness, unstable housing, and risk of HIV and hepatitis C virus acquisition among people who inject drugs: a systematic review and meta-analysis

BACKGROUND

People who inject drugs (PWID) are at increased risk for HIV and hepatitis C virus (HCV) infection and also have high levels of homelessness and unstable housing. We assessed whether homelessness or unstable housing is associated with an increased risk of HIV or HCV acquisition among PWID compared with PWID who are not homeless or are stably housed.

METHODS

In this systematic review and meta-analysis, we updated an existing database of HIV and HCV incidence studies published between Jan 1, 2000, and June 13, 2017. Using the same strategy as for this existing database, we searched MEDLINE, Embase, and PsycINFO for studies, including conference abstracts, published between June 13, 2017, and Sept 14, 2020, that estimated HIV or HCV incidence, or both, among community-recruited PWID. We only included studies reporting original results without restrictions to study design or language. We contacted authors of studies that reported HIV or HCV incidence, or both, but did not report on an association with homelessness or unstable housing, to request crude data and, where possible, adjusted effect estimates. We extracted effect estimates and pooled data using random-effects meta-analyses to quantify the associations between recent (current or within the past year) homelessness or unstable housing compared with not recent homelessness or unstable housing, and risk of HIV or HCV acquisition. We assessed risk of bias using the Newcastle-Ottawa Scale and between-study heterogeneity using the I2 statistic and p value for heterogeneity.

FINDINGS

We identified 14 351 references in our database search, of which 392 were subjected to full-text review alongside 277 studies from our existing database. Of these studies, 55 studies met inclusion criteria. We contacted the authors of 227 studies that reported HIV or HCV incidence in PWID but did not report association with the exposure of interest and obtained 48 unpublished estimates from 21 studies. After removal of duplicate data, we included 37 studies with 70 estimates (26 for HIV; 44 for HCV). Studies originated from 16 countries including in North America, Europe, Australia, east Africa, and Asia. Pooling unadjusted estimates, recent homelessness or unstable housing was associated with an increased risk of acquiring HIV (crude relative risk [cRR] 1·55 [95% CI 1·23-1·95; p=0·0002]; I2= 62·7%; n=17) and HCV (1·65 [1·44-1·90; p<0·0001]; I2= 44·8%; n=28]) among PWID compared with those who were not homeless or were stably housed. Associations for both HIV and HCV persisted when pooling adjusted estimates (adjusted relative risk for HIV: 1·39 [95% CI 1·06-1·84; p=0·019]; I2= 65·5%; n=9; and for HCV: 1·64 [1·43-1·89; p<0·0001]; I2= 9·6%; n=14). For risk of HIV acquisition, the association for unstable housing (cRR 1·82 [1·13-2·95; p=0·014]; n=5) was higher than for homelessness (1·44 [1·13-1·83; p=0·0036]; n=12), whereas no difference was seen between these outcomes for risk of HCV acquisition (1·72 [1·48-1·99; p<0·0001] for unstable housing, 1·66 [1·37-2·00; p<0·0001] for homelessness).

INTERPRETATION

Homelessness and unstable housing are associated with increased risk of HIV and HCV acquisition among PWID. Our findings support the development of interventions that simultaneously address homelessness and unstable housing and HIV and HCV transmission in this population.

FUNDING

National Institute for Health Research, National Institute on Drug Abuse, National Institute of Allergy and Infectious Diseases, and Commonwealth Scholarship Commission.

Deconstructing the 'cheque effect': short-term changes in injection drug use after receiving income assistance and associated factors

BACKGROUND AND AIMS

Disbursement of income assistance has been temporally associated with intensified drug use and related harms (coined the 'cheque effect'). However, relationships to injection drug use (IDU) remain understudied. We examined short-term 'cheque effects' and associated factors among people who inject drugs (PWID).

DESIGN

Cross-sectional analysis nested within a cohort study.

SETTING

Montreal, Quebec, Canada.

PARTICIPANTS

PWID receiving income assistance, with no employment income. A total of 613 PWID (median age 41, 83% male) contributed 3269 observations from 2011 to 2017.

MEASUREMENTS AND METHODS

At each cohort visit, an interviewer-administered questionnaire captured retrospective reports of injection-related behaviour during the 2-day periods (i) before and (ii) including/after receiving last month's income assistance payment (number of injections; drugs injected; any receptive syringe-sharing). The relative likelihood (odds) and magnitude (rate) of an increase in injection frequency ('cheque effect') were estimated in relation to social and behavioural factors using logistic and negative binomial regression in a covariate-adjusted two-part model.

FINDINGS

Prevalence of IDU and syringe-sharing were, respectively, 1.80 and 2.50 times higher in the days following versus preceding cheque receipt (P < 0.001). Among people with past-month IDU, most observations showed increased injection frequency (52%) or no change in injection frequency (44%). The likelihood of a 'cheque effect' was positively associated with cocaine injection [versus injection of other substances, odds ratio (OR) = 2.639, 95% confidence interval (CI) = 2.04-3.41], unstable housing (OR = 1.272, 95% CI = 1.03-1.57) and receiving opioid agonist therapy (OR =1.597, 95% CI = 1.27-2.00) during the same month. Magnitude of the 'cheque effect' was positively associated with cocaine injection [rate ratio (RR) = 1.795, 95% CI = 1.43-2.16], unstable housing (RR = 1.198, 95% CI = 1.02-1.38) and frequent injection (RR = 2.938, 95% CI = 2.43-3.44), but inversely associated with opioid agonist therapy (RR = 0.817, 95% CI = 0.68-0.95) and prescription opioid injection (RR = 0.794, 95% CI = 0.66-0.93).

CONCLUSION

Among people who inject drugs in Montreal, Canada, injection drug use and receptive syringe-sharing appear to be more prevalent in the 2 days after versus before receiving income assistance. The odds and rate of individual-level increases in injection frequency appear to be positively associated with cocaine injection (versus injection of other substances) and unstable housing.

Accessibility of Needle and Syringe Programs and Injecting and Sharing Risk Behaviors in High Hepatitis C Virus Prevalence Settings

Background: Access to healthcare services is a basic human right. Objective: The main purpose of this study is to assess the association between accessibility of needle and syringe programs (NSP) and injecting and sharing risk behaviors. Methods: A cross-sectional study employed respondent-driving sampling (RDS) to recruit a sample of 634 people who inject drugs (PWID) from three provinces, Golestan, Ardabil, and Sistan and Baluchestan, in Iran between November 2018 and February 2019. Participants completed a questionnaire based on the WHO Drug Injecting Study Phase II survey. Results: Participants reported their accessibility of NSP services as low (6%), middle (19%), and high (75%) in the past 2 months at the time of the survey. PWID who had increased access to NSP services were less likely to report utilization of used cooker (aOR = 1.40; CI 95% 0.99-1.82), cotton (aOR = 1.30; CI 95% 0.79-1.81), and water (aOR = 1.07; CI 95% 0.89-1.26), receptive needle/syringe sharing (aOR= 1.86, 95% CI 1.69-2.03), and distributive needle/syringe sharing (aOR= 1.09, 95% CI 0.81-1.37). Conclusions/Importance: There is evidence of inequality in PWID's access to health care as they relate to the prevention of HCV transmission. An understanding of both the social determinants and prevention of injecting and sharing risk behaviors seeks to connect HCV risk reduction within the context of human rights and vulnerability.

Employment Cessation, Long Term Labour Market Engagement and HIV Infection Risk Among People Who Inject Drugs in an Urban Canadian Setting

The potential for changes in socio-economic status, such as employment exits, to increase HIV infection risk are not well examined among people who inject illicit drugs (PWID). We used longstanding cohort data from Vancouver, Canada, to longitudinally assess associations between employment cessation and outcomes with documented linkages to HIV infection risk among PWID. From 2005 to 2015, 1222 participants reported 1154 employment exits. Employment exits were significantly associated with transitions into unstable housing; moving to the inner-city; initiating informal, prohibited or illegal income generation; high risk drug use practices; and exiting methadone maintenance therapy. HIV infection rates were higher among participants with lower long-term labour market engagement. These findings suggest that employment cessation coincides with initiating exposure to aspects of socioeconomic marginalization and drug use associated with HIV infection risk. Support for employment retention that prevents poverty entrenchment and harmful drug use could contribute to HIV prevention measures for PWID.

Mapping the hepatitis C cascade of care in people attending drug treatment services in England: A data linkage study

INTRODUCTION

Hepatitis C (HCV) infection in England primarily affects people who inject drugs (PWID). We describe persons HCV tested, estimate incidence and establish the cascade of care (CoC) for people engaging with drug services.

METHODS

Persons testing for HCV in drug services in Sentinel Surveillance of Blood Borne Virus Testing (SSBBV) between 2008 and 2016 were linked with people attending drug services in the National Drug and Treatment Monitoring System (NDTMS). We describe risk characteristics, establish the CoC, and estimate HCV incidence in PWID diagnosed in drug services.

RESULTS

Of 46,721 persons tested for anti-HCV in SSBBV in drug services, 29,773 (63.7%) linked to NDTMS. Of these, 9100 (30.6%) were antiV positive and anti-HCV positivity was 45.0% in persons reporting urgent housing problems and 43.8% in persons reporting ever injecting. Among persons anti-HCV positive, half had ≥1 positive anti-HCV test. For persons' first anti-HCV positive between 2008 and 2013 (n = 3123), 74.9% were HCV RNA tested, of whom 71.2% were RNA positive, and of these, 14.0% had evidence of interferon-based treatment, with 52.8% achieving cure. Among PWID, HCV incidence was 8.7 per 100 person-years (95% CI: 8.1-9.2).

CONCLUSION

Through record linkage of surveillance datasets, we estimated the HCV CoC for people attending drug services, providing a benchmark from which to monitor the impact of strategies to scale-up prevention, testing, and curative treatment with direct acting antivirals. Our study highlights wasteful repeated testing and poor linkage to care for this high risk population which need to be addressed.

Analysis of time of drug use according to needle and syringe program operating hours in Melbourne, Australia: Effects on individual-level needle and syringe coverage

BACKGROUND

Restricted needle and syringe program (NSP) operating hours in Australia have been reported as a barrier to access for people who inject drugs (PWID). We explored the prevalence of drug use occurring outside NSP operating hours with a particular focus on its impacts on individual-level needle and syringe coverage.

METHODS

Using data from 584 participants in a cohort of PWID in Melbourne, Australia, we analyzed time and day of drug use for heroin, methamphetamine and pharmaceutical opioids. We related this drug use to the typical operating times of Melbourne's fixed-site NSPs, categorizing drug use as either "in-hours" or "out-of-hours". We explored associations with out-of-hours drug use using a generalized linear mixed model of pooled longitudinal data.

RESULTS

23% of heroin use and 50% of methamphetamine use occurred out-of-hours. In regression analysis, males and those injecting in public locations had significantly reduced odds of out-of-hours drug use. Those currently employed and those using methamphetamine (compared to heroin) had significantly increased odds of out-of-hours drug use. There was no significant association between individual-level needle and syringe coverage and hours of drug use.

CONCLUSIONS

Deficiencies in individual-level needle and syringe coverage may not be due to restricted NSP operating hours. Instead, insufficient coverage may be the result of other factors in the lives of PWID or other NSP access difficulties. These preliminary results suggest improvements to coverage in Australia may not result from increased hours of NSP operation, but instead via improvements to client targeting.

Living with Hepatitis C Virus: A Systematic Review and Narrative Synthesis of Qualitative Literature

Background and Aims. The lived experience of HCV has not been well documented in the literature. The aim of this systematic review was to understand the experiences of living with Hepatitis C Virus (HCV). Methods. Five databases were searched from inception until January 19, 2015. Studies were included if they focused on adults diagnosed with HCV; reported experience living with HCV; and described original research. Results. 46 studies were included. Studies found that participants had reduced quality of life due to physical symptoms. Due to physical symptoms and discrimination, many participants switched to part-time work or quit their jobs. Many individuals reported negative experiences with the healthcare system; themes of feeling unsupported, not having adequate information, and not feeling involved in decisions were reported. Stigma significantly impacted those living with HCV. Conclusions. Published literature indicates that those with HCV often feel stigmatized and unsupported in their care, relationships, and work environments, while simultaneously coping with physical and psychological symptoms. This synthesis points to areas where greater education, compassion, and patient-centered healthcare could improve the experience of people living with HCV.

Increasing hepatitis C knowledge among homeless adults: results of a community-based, interdisciplinary intervention

Homeless adults have high rates of hepatitis C virus infection (HCV) and low levels of HCV knowledge. This study reports results of an interdisciplinary, community-based intervention using stakeholder cooperation, case management, risk factor identification, and modification of dysfunctional psychosocial factors to increase HCV knowledge among homeless adults (N = 747). Data are from a randomized quasi-experimental study, with the major goal of evaluating the effectiveness of a Nurse Case Managed Intervention compared to a Standard Intervention, encouraging completion of a three-series hepatitis A/hepatitis B vaccination program. Increased HCV knowledge was measured with an 18-item questionnaire discerning risk factors for HCV and common misconceptions about individuals with HCV. A significant increase in HCV knowledge resulted regardless of intervention format. Receiving the Nurse Case Managed Intervention predicted greatest gain in HCV knowledge (p < 0.000). Successfully engaging key stakeholders, outreach workers, community organizations, and homeless people themselves proved most efficacious in increasing HCV knowledge.

Differences in sociodemographic, drug use and health characteristics between never, former and current injecting, problematic hard-drug users in the Netherlands

Background

Injecting drug users are at increased risk for harmful effects compared to non-injecting drug users. Some studies have focused on differences in characteristics between these two groups (e.g., housing, overall health). However, no study has investigated the specific Dutch situation which in the last years has seen a decrease in homelessness among problematic hard-drug users and an increasing focus on physical health in low-threshold addiction care. The purpose of this study was to determine differences in sociodemographic, drug use and health characteristics between never-injecting (NIDUs), former-injecting (FIDUs) and current-injecting drug users (IDUs) and describe injecting practices.

Methods

A total of 202 problematic hard-drug users (NIDU = 64; FIDU = 76; IDU = 62) were recruited from 22 low-threshold care facilities, including drug consumption rooms, methadone maintenance treatment, heroin-assisted therapy, day shelter and/or night shelter, supported housing and day activity centres. Data were collected on-site through structured face-to-face interviews.

Results

Results indicate that IDUs represented a separate group of problematic hard-drug users, with distinct sociodemographic and drug use characteristics. Overall, IDUs appeared to be the group with least favourable characteristics (unstable housing/homelessness, illegal activities, polydrug use) and NIDUs appeared to have the most favourable characteristics (stable housing, help with debts, less polydrug use). The FIDU group lies somewhere in between. The three groups did not differ significantly in terms of health. Regarding injecting practices, results showed that majority of IDUs had injected drugs for over 10 years and IDUs injected heroin, cocaine, amphetamine and/or methadone in the past 6 months. Sharing syringes was not common. A quarter reported public injecting.

Conclusions

Unstable housing and homelessness are related to (former) injecting drug use, and stable housing is related to never-injecting drug use. Our study suggests that the number of ‘new’ IDUs is low. However, public injecting among IDUs is not uncommon and is associated with unstable housing. This emphasizes the potential of housing projects as a component of harm reduction measures. Therefore, prevention of (risks associated with) injecting drug use and supported housing programmes for problematic hard-drug users deserve the continuous attention of policymakers and professionals in low-threshold addiction care.

Barriers and facilitators of hepatitis C screening among people who inject drugs: a multi-city, mixed-methods study

Background

People who inject drugs (PWID) are at high risk of contracting and transmitting and hepatitis C virus (HCV). While accurate screening tests and effective treatment are increasingly available, prior research indicates that many PWID are unaware of their HCV status.

Methods

We examined characteristics associated with HCV screening among 553 PWID utilizing a free, multi-site syringe exchange program (SEP) in 7 cities throughout Wisconsin. All participants completed an 88-item, computerized survey assessing past experiences with HCV testing, HCV transmission risk behaviors, and drug use patterns. A subset of 362 clients responded to a series of open-ended questions eliciting their perceptions of barriers and facilitators to screening for HCV. Transcripts of these responses were analyzed qualitatively using thematic analysis.

Results

Most respondents (88%) reported receiving a HCV test in the past, and most of these (74%) were tested during the preceding 12 months. Despite the availability of free HCV screening at the SEP, fewer than 20% of respondents had ever received a test at a syringe exchange site. Clients were more likely to receive HCV screening in the past year if they had a primary care provider, higher educational attainment, lived in a large metropolitan area, and a prior history of opioid overdose. Themes identified through qualitative analysis suggested important roles of access to medical care and prevention services, and nonjudgmental providers.

Conclusions

Our results suggest that drug-injecting individuals who reside in non-urban settings, who have poor access to primary care, or who have less education may encounter significant barriers to routine HCV screening. Expanded access to primary health care and prevention services, especially in non-urban areas, could address an unmet need for individuals at high risk for HCV.

Views and experiences of hepatitis C testing and diagnosis among people who inject drugs: systematic review of qualitative research

BACKGROUND

Many developed countries are facing a major challenge to improve identification of individuals acutely and chronically infected with hepatitis C virus (HCV) infection. We explored the views and experiences of people who inject drugs (PWID) in relation to HCV testing, and diagnosis through a review and synthesis of qualitative research.

METHODS

Based on the thematic synthesis of qualitative research. Searches were conducted in 14 databases and supplemented by reference checking, hand searching of selected journals, and searches of relevant websites. Studies of any qualitative design that examined the views and experiences of, and attitudes towards, HCV testing and diagnosis among PWID or practitioners involved in their care were included. Key themes and sub-themes were systematically coded according to the meaning and content of the findings of each study which proceeded to the preparation of a narrative account of the synthesis.

RESULTS

28 qualitative studies were identified. We identified a number of overarching descriptive themes in the literature, finding overall that PWID hold complex and differing views and experiences of testing and diagnosis. Three major themes emerged: missed opportunities for the provision of information and knowledge; shifting priorities between HCV testing and other needs; and testing as unexpected and routine. Evidence of missed opportunities for the provision of knowledge and information about HCV were clear, contributing to delays in seeking testing and providing a context to poor experiences of diagnosis. Influenced by the nature of their personal circumstances, perceptions of the risk associated with HCV and the prioritisation of other needs acted both to encourage and discourage the uptake of HCV testing. Undergoing HCV testing as part of routine health assessment, and an unawareness of being testing was common. An unexpected positive diagnosis exacerbated anxiety and confusion.

CONCLUSION

This review has identified that there are modifiable factors that affect the uptake of HCV testing and experiences of HCV diagnosis among PWID. Intervention development should focus on addressing these factors. There is a need for further research that engages PWID from a diverse range of populations to identify interventions, strategies and approaches that they consider valuable.

Injecting practices in sexual partnerships: hepatitis C transmission potentials in a 'risk equivalence' framework

BACKGROUND

Evidence indicates minimal hepatitis C (HCV) sexual transmission risk among HIV negative heterosexual partners. Limited HCV literacy has been demonstrated among people who inject drugs, yet there is a dearth of research exploring perceptions of HCV heterosexual transmission risk among this high risk population.

METHODS

We conducted a qualitative life history study with people who had been injecting drugs for over six years, to explore the social practices and conditions of long-term HCV avoidance. Participants were recruited through London drug services and drug user networks. The sample comprised 10 women and 27 men (n=37), of whom 22 were HCV antibody negative. Participants were aged from 23 to 57 years and had been injecting for 6 to 33 years. Twenty participants were in long term heterosexual partnerships.

FINDINGS

The majority of participants in relationships reported 'discriminate' needle and syringe sharing with their primary sexual partner. Significantly, and in tension with biomedical evidence, participants commonly rationalised syringe sharing with sexual partners in terms of 'risk equivalence' with sexual practices in regard to HCV transmission. Participants' uncertain knowledge regarding HCV transmission, coupled with unprotected sexual practices perceived as being normative were found to foster 'risk equivalence' beliefs and associated HCV transmission potential.

CONCLUSION

HCV prevention messages that 'add on' safe sex information can do more harm than good, perpetuating risk equivalence beliefs and an associated dismissal of safe injecting recommendations among those already practicing unprotected sex.

Housing instability among people who inject drugs: results from the Australian needle and syringe program survey

High rates of substance dependence are consistently documented among homeless people, and are associated with a broad range of negative outcomes among this population. Investigations of homelessness among drug users are less readily available. This study examined the prevalence and correlates of housing instability among clients of needle syringe programs (NSPs) via the Australian NSP Survey, annual cross-sectional seroprevalence studies among NSP attendees. Following self-completion of a brief, anonymous survey and provision of a capillary blood sample by 2,396 NSP clients, multivariate logistic regressions identified the variables independently associated with housing instability. Nineteen percent of ANSPS participants reported current unstable housing, with primary ('sleeping rough'; 5 %), secondary (staying with friends/relatives or in specialist homelessness services; 8 %), and tertiary (residential arrangements involving neither secure lease nor private facilities; 6 %) homelessness all evident. Extensive histories of housing instability were apparent among the sample: 66 % reported at least one period of sleeping rough, while 77 % had shifted between friends/relatives (73 %) and/or resided in crisis accommodation (52 %). Participants with a history of homelessness had cycled in and out of homelessness over an average of 10 years; and one third reported first being homeless before age 15. Compared to their stably housed counterparts, unstably housed participants were younger, more likely to be male, of Indigenous Australian descent, and to report previous incarceration; they also reported higher rates of key risk behaviors including public injecting and receptive sharing of injecting equipment. The high prevalence of both historical and current housing instability among this group, particularly when considered in the light of other research documenting the many adverse outcomes associated with this particular form of disadvantage, highlights the need for increased supply of secure, affordable public housing in locations removed from established drug markets and serviced by health, social, and welfare support agencies.

Perceived barriers to hepatitis C therapy for patients receiving opioid agonist treatment

OBJECTIVES

To explore attitudes toward hepatitis C antiviral therapy in a real-world setting, we asked patients in opioid agonist treatment who were offered antiviral therapy about perceived barriers to initiating therapy.

METHODS

We recruited patients in opioid agonist treatment who had previously been offered cost-free hepatitis C antiviral therapy in a clinical trial. We collected demographic and open-ended interview data. The semistructured interview guide included questions about attitudes toward hepatitis C therapy and barriers to initiating treatment. Each interview was audio recorded and transcribed verbatim. We used the qualitative editing method to analyze the interview transcripts.

RESULTS

We enrolled 19 patients who had been approached to initiate hepatitis C therapy in a clinical trial. All participants were low-income men, with one third self-identifying as racial minorities. When asked about possible barriers to treatment, multiple problems emerged, including the fear of treatment side effects, difficulties with health care providers, limited access to medical care and health information, and misperceptions about antiviral therapy.

CONCLUSIONS

Despite intense educational efforts, concerns over antiviral therapy, relations with providers, and access to the health care system remain critical barriers. These factors should be addressed to improve antiviral therapy rates for patients receiving opioid agonist treatment.

Uptake of paraphernalia from injecting equipment provision services and its association with sharing of paraphernalia among injecting drug users in Scotland

BACKGROUND

There has been a significant increase in the provision of injecting paraphernalia from Scottish injecting equipment provision (IEP) services. However, there is currently a lack of evidence on whether uptake of paraphernalia has any impact on paraphernalia sharing among injecting drug users (IDU). The aim of this study was to examine the factors associated with paraphernalia sharing; in particular, whether uptake of filters, spoons and sterile water from IEPs is associated with a reduction in the sharing of these items.

METHODS

A cross-sectional voluntary anonymous survey of 2037 IDUs was administered during 2008-2009. Participants were asked whether they had shared filters, spoons or water (paraphernalia) in the previous 6 months, and their uptake of these items from an IEP during an average week in the previous 6 months.

RESULTS

Self-reported uptake of paraphernalia in an average week during the previous 6 months was associated with reduced odds of sharing paraphernalia: (i) uptake of >30 filters was associated with a reduced odds of sharing filters (adjusted odds ratio (AOR) 0.50, 95% confidence interval 0.32-0.79); (ii) uptake of >30 spoons was associated with a reduced odds of sharing spoons (AOR 0.46, 95% confidence interval 0.28-0.74); and (iii) uptake of sterile water was associated with a reduced odds of sharing water (AOR 0.36, 95% confidence interval 0.22-0.61) compared to no uptake of each of these items.

CONCLUSIONS

Uptake of paraphernalia appears to be associated with safer injecting practice. Further research is needed to establish the impact of paraphernalia provision on HCV transmission.

The ongoing impacts of hepatitis c--a systematic narrative review of the literature

BACKGROUND

Many countries have developed, or are developing, national strategies aimed at reducing the harms associated with hepatitis C infection. Making these strategies relevant to the vast majority of those affected by hepatitis C requires a more complete understanding of the short and longer term impacts of infection. We used a systematic approach to scope the literature to determine what is currently known about the health and psychosocial impacts of hepatitis C along the trajectory from exposure to ongoing chronic infection, and to identify what knowledge gaps remain.

METHODS

PubMed, Current Contents and PsychINFO databases were searched for primary studies published in the ten years from 2000-2009 inclusive. Two searches were conducted for studies on hepatitis C in adult persons focusing on: outcomes over time (primarily cohort and other prospective designs); and the personal and psychosocial impacts of chronic infection. All retrieved studies were assessed for eligibility according to specific inclusion/exclusion criteria, data completeness and methodological coherence. Outcomes reported in 264 included studies were summarized, tabulated and synthesized.

RESULTS

Injecting drug use (IDU) was a major risk for transmission with seroconversion occurring relatively early in injecting careers. Persistent hepatitis C viraemia, increasing age and excessive alcohol consumption independently predicted disease progression. While interferon based therapies reduced quality of life during treatment, improvements on baseline quality of life was achieved post treatment--particularly when sustained viral response was achieved. Much of the negative social impact of chronic infection was due to the association of infection with IDU and inflated assessments of transmission risks. Perceived discrimination was commonly reported in health care settings, potentially impeding health care access. Perceptions of stigma and experiences of discrimination also had direct negative impacts on wellbeing and social functioning.

CONCLUSIONS

Hepatitis C and its management continue to have profound and ongoing impacts on health and social well being. Biomedical studies provided prospective information on clinical aspects of infection, while the broader social and psychological studies presented comprehensive information on seminal experiences (such as diagnosis and disclosure). Increasing the focus on combined methodological approaches could enhance understanding about the health and social impacts of hepatitis C along the life course.

Sex and relationships on the street: how homeless men judge partner risk on Skid Row

Homeless men in the U.S. represent a large and growing population, and have elevated rates of HIV/AIDS and sexual risk behaviors, including unprotected sex with women. We conducted qualitative interviews (n = 30) with homeless men using shelters and meal lines in downtown Los Angeles (Skid Row) to better understand how such men view the risks of sexual encounters with female partners. Men living on Skid Row perceived multiple risks, including HIV and unwanted pregnancy as well as emotional trauma, loss of resources, exacerbation of drug addiction, and physical attack. Respondents described using visual and behavioral cues, social reputation, geographical location, feelings of trust, perceived relationship seriousness, and medically inaccurate "folk" beliefs to judge whether partners were risky and/or condom use was warranted. Medically inaccurate beliefs suggest the potential utility of evidence-based interventions to change such beliefs. We also consider implications for relationships on the street and housing interventions.

Social determinants of health associated with hepatitis C co-infection among people living with HIV: results from the Positive Spaces, Healthy Places study

BACKGROUND

Social determinants of health (SDOH) may influence the probability of people living with HIV also being infected with hepatitis C virus (HCV). We compared the SDOH of adults co-infected with HCV/HIV with that of HIV mono-infected adults to identify factors independently associated with HCV infection.

METHODS

In this cross-sectional study, face-to-face interviews were conducted with 509 HIV-infected adults affiliated with or receiving services from community-based AIDS service organizations (CBAOs). The primary outcome measure was self-reported HCV infection status. Chi-square, Student's t tests, and Wilcoxon rank-sum tests were performed to compare SDOH of HCV/HIV co-infected participants with that of HIV mono-infected participants. Multivariable hierarchical logistic regression was used to identify factors independently associated with HCV co-infection.

RESULTS

Data on 482 (95 HCV/HIV co-infected and 387 HIV mono-infected) adults were analyzed. Compared with participants infected with HIV only, those who were co-infected with HIV and HCV were more likely to be heterosexual, Aboriginal, less educated and unemployed. They were more likely to have a low income, to not be receiving antiretroviral treatment, to live outside the Greater Toronto Area (GTA), to use/abuse substances, experience significant depression, and utilize addiction counselling and needle-exchange services. They also were more likely to report a history of homelessness and perceived housing-related discrimination and to have moved twice or more in the previous 12 months. Factors independently associated with HCV/HIV co-infection were history of incarceration (odds ratio [OR] 8.81, 95% CI 4.43-17.54), history of homelessness (OR 3.15, 95% CI 1.59-6.26), living outside of the GTA (OR 3.13, 95% CI 1.59-6.15), and using/abusing substances in the past 12 months (OR 2.05, 95% CI 1.07-3.91).

CONCLUSION

Differences in SDOH exist between HIV/HCV co-infected and HIV mono-infected adults. History of incarceration, history of homelessness, substance use, and living outside the GTA were independently associated with HCV/HIV co-infection. Interventions that reduce homelessness and incarceration may help prevent HCV infection in people living with HIV.

Emergency department utilization among a cohort of HIV-positive injecting drug users in a Canadian setting

BACKGROUND

Human immunodeficiency virus (HIV)-positive injection drug users (IDUs) are known to be at risk for multiple medical problems that may necessitate emergency department (ED) use; however, the relative contribution of HIV disease vs. injection-related complications has not been well described.

OBJECTIVES

We examined factors associated with ED use among a prospective cohort of HIV-positive IDUs in a Canadian setting.

METHODS

We enrolled HIV-positive IDUs into a community-recruited prospective cohort study. We modeled factors associated with the time to first ED visit using Cox regression to determine factors independently associated with ED use. In sub-analyses, we examined ED diagnoses and subsequent hospital admission rates.

RESULTS

Between December 5, 2005 and April 30, 2008, 428 HIV-positive IDUs were enrolled, among whom the cumulative incidence of ED use was 63.7% (95% confidence interval [CI] 59.1-68.3%) at 12 months after enrollment. Factors independently associated with time to first ED visit included: unstable housing (hazard ratio [HR] 1.5; 95% CI 1.1-2.0) and reporting being unable to obtain needed health care services (HR 2.2; 95% CI 1.2-4.1), whereas CD4 count and viral load were non-significant. Skin and soft tissue infections accounted for the greatest proportion of ED visits (17%). Of the 2461 visits to the ED, 419 (17%) were admitted to the hospital.

CONCLUSIONS

High rates of ED use were observed among HIV-positive IDUs, a behavior that was predicted by unstable housing and limited access to primary care. Factors other than HIV infection seem to be driving ED use among this population in the post-highly active antiretroviral therapy era.

Addressing the health needs of the homeless

Several authors have alluded to the complex health needs of the homeless population in the UK. The correlation between homelessness and a wide range of health problems has been explored in the literature. This paper presents a literature review exploring the biological, psychosocial and sexual health needs of single homeless people. The relationship between health and homelessness is analysed in relation to theories of health inequalities, which suggest that being homeless may be both a cause and a consequence of ill health. The contemporary nurse can play a vital role in helping to overcome the barriers that homeless people face when accessing health services. This paper explores the skills and approaches that nurses in a wide variety of settings can employ in addressing the health issues of homeless clients.

An overview about hepatitis C: a devastating virus

Hepatitis C (HCV) is the disease that has affected around 200 million people globally. HCV is a life threatening human pathogen, not only because of its high prevalence and worldwide burden but also because of the potentially serious complications of persistent HCV infection. Chronicity of the disease leads to cirrhosis, hepatocellular carcinoma and end-stage liver disease. HCV positive hepatocytes vary between less than 5% and up to 100%, indicating the high rate of replication of viral RNA. HCV has a very high mutational rate that enables it to escape the immune system. Viral diversity has two levels; the genotypes and Quasiaspecies. Major HCV genotypes constitute genotype 1, 2, 3, 4, 5 and 6 while more than 50 subtypes are known. All HCV genotypes have their particular patterns of geographical distribution and a slight drift in viral population has been observed in some parts of the globe.

Unstable housing and hepatitis C incidence among injection drug users in a Canadian setting

Background

There has emerged growing recognition of the link between housing and health. Since Vancouver, Canada has had increasing concerns with homelessness brought about by urban renewal in the lead-up to the 2010 Winter Olympic Games, we evaluated hepatitis C virus (HCV) incidence among injection drug users (IDU) with and without stable housing.

Methods

Data were derived from a collaboration between two prospective cohort studies of IDU in Vancouver, Canada. Using Cox Proportional Hazards regression, we compared HCV incidence among participants with and without stable housing, and determined independent predictors of HCV incidence.

Results

Overall, 3074 individuals were recruited between May 1996 and July 2007, among whom 2541 (82.7%) were baseline HCV-infected. Among the 533 (17.3%) individuals who were not HCV-infected at baseline, 147 tested HCV antibody-positive during follow-up, for an incidence density of 16.89 (95% confidence interval: 14.76 – 19.32) per 100 person-years. In a multivariate Cox regression model, unstable housing remained independently associated with HCV infection (relative hazard = 1.47 (1.02 – 2.13).

Conclusion

HCV prevalence and incidence are high in this setting and were associated with unstable housing. Efforts to protect existing low-income housing and improve access to housing may help to reduce HCV incidence.

Incidence of hepatitis C in drug injectors: the role of homelessness, opiate substitution treatment, equipment sharing, and community size

A prospective cohort study estimated the incidence of hepatitis C virus (HCV) in drug injectors in South Wales (UK). In total, 286/481 eligible seronegative individuals were followed up after approximately 12 months. Dried blood spot samples were collected and tested for anti-HCV antibody and behavioural data were collected at baseline and follow-up. HCV incidence was 5.9/100 person-years [95% confidence interval (CI) 3.4-9.5]. HCV incidence was predicted by community size [incident rate ratio (IRR) 6.6, 95% CI 2.11-20.51, P = 0.001], homelessness (IRR 2.9, 95% CI 1.02-8.28, P = 0.047) and sharing injecting equipment (IRR 12.7, 95% CI 1.62-99.6, P = 0.015). HCV incidence was reduced in individuals in opiate substitution treatment (IRR 0.34, 95% CI 0.12-0.99, P = 0.047). In order to reduce follow-up bias we used multiple imputation of missing data using switching regression; after imputation estimated HCV incidence was 8.5/100 person-years (95% CI 5.4-12.7). HCV incidence varies with community size, equipment sharing and homelessness are associated with increased HCV incidence and opiate substitution treatment may be protective against HCV.

The social production of hepatitis C risk among injecting drug users: a qualitative synthesis

BACKGROUND

Intervention impact on reductions in hepatitis C virus (HCV) incidence among injecting drug users (IDUs) are modest. There is a need to explore how drug injectors' interpret HCV risk.

AIMS

To review English-language qualitative empirical studies of HCV risk among IDUs.

METHODS

Qualitative synthesis using a meta-ethnographic approach. Searching of eight electronic databases and reference lists identified manually papers in peer-reviewed journals since 2000. Only studies investigating IDU perspectives on HCV risk were included. Themes across studies were identified systematically and compared, leading to a synthesis of second- and third-order constructs.

FINDINGS

We included 31 papers, representing 24 studies among over 1000 IDUs. Seven themes were generated: risk ubiquity; relative viral risk; knowledge uncertainty; hygiene and the body; trust and intimacy; risk environment; and the individualization of risk responsibility. Evidence supports a perception of HCV as a risk accepted rather than avoided. HCV was perceived largely as socially accommodated and expected, and in relative terms to human immunodeficiency virus (HIV) as the 'master status' of viral dangers. Symbolic knowledge systems, rather than biomedical risk calculus, and especially narratives of hygiene and trust, played a primary role in shaping interpretations of HCV risk. Critical factors in the risk environment included policing, homelessness and gendered risk.

CONCLUSIONS

Appealing to risk calculus alone is insufficient. Interventions should build upon the salience of hygiene and trust narratives in HCV risk rationality, and foster community changes towards the perceived preventability of HCV. Structural interventions in harm reduction should target policing, homelessness and gendered risk.

Quantifying hepatitis C transmission risk using a new weighted scoring system for the Blood-Borne Virus Transmission Risk Assessment Questionnaire (BBV-TRAQ): applications for community-based HCV surveillance, education and prevention

Background

The hepatitis C virus (HCV) is a major cause of drug-related morbidity and mortality, with incidence data implicating a wide range of HCV transmission risk practices. The Blood-Borne Virus Transmission Risk Assessment Questionnaire (BBV-TRAQ) is a content valid instrument that comprehensively assesses HCV risk practices. This study examines the properties of a new weighted BBV-TRAQ designed to quantify HCV transmission risk among injecting drug users (IDU).

Methods

Analyses of cross-sectional surveys of Australian IDU (N = 450) were used to generate normative data and explore the properties of a weighted BBV-TRAQ. Items weights were assigned according to expert key informant ratings of HCV risk practices performed during the development stages of the BBV-TRAQ. A range of item weights was tested and psychometric properties explored. A weighting scheme was recommended based on the plausibility of normative subscale data in relation to research evidence and the ability of BBV-TRAQ scores to discriminate between HCV positive and negative participants.

Results

While retaining the psychometric properties of the unweighted scale and demonstrating good internal reliability. By taking into account the relative transmission risk of a broad range of putative HCV practices, the weighted BBV-TRAQ produced promising predictive validity results among IDU based on self-report HCV status, particularly among young and less experienced injectors.

Conclusion

Brief, easy to administer and score, and inexpensive to apply, the utility of the BBV-TRAQ for community based education and prevention is enhanced by the application of item weights, potentially offering a valid surrogate measure for HCV infection among IDU.

Perceived barriers to safe-injection practices among drug injectors who remain HCV-negative

Fifty-nine hepatitis C (HCV) seronegative drug injectors (IDUs) were interviewed regarding their injection equipment sharing behaviors. Participants were 75% male, 66% Caucasian, had injected an average of nine years, and were very knowledgeable about HCV transmission risk. One-third used needles or works after another injector within the past six months. Lower perceived personal risk and lower perceived availability of clean needles were significantly associated with sharing. Injectors were more likely to share when emotionally upset or experiencing withdrawal symptoms. Despite, or perhaps because of, their HCV seronegative status, IDUs continue to share. Tailoring messages to modifiable perceptions of risk may be useful in reducing continued drug equipment sharing.

Impact of California's Proposition 36 on the drug treatment system: treatment capacity and displacement

OBJECTIVES

California's Proposition 36 offers nonviolent drug offenders community-based treatment as an alternative to incarceration or probation without treatment. We examined how treatment capacity changed to accommodate Proposition 36 clients and whether displacement of other clients was an unintended consequence.

METHODS

Treatment admissions were compared for the year before and 2 years after the law was enacted. Surveys of county administrators and treatment providers were conducted in Kern, Riverside, Sacramento, San Diego, and San Francisco counties.

RESULTS

The number of Proposition 36 offenders admitted to treatment continued to increase in the state (approximately 32000 in Year 1 and 48000 in Year 2) and in the 5 counties; total treatment admissions stabilized in Year 2 after increasing in Year 1. Voluntary clients decreased by 8000 each year statewide, but the change varied across counties. One third of treatment providers reported decreased treatment availability for non-Proposition 36 clients in Year 2.

CONCLUSION

Despite expanded treatment capacity (mostly in outpatient treatment), indirect evidence suggests that displacement of voluntary clients may have occurred in part because of the demand for treatment by Proposition 36 clients.

Application of a triage approach to peripheral bone densitometry reduces the requirement for central DXA but is not cost effective

A method proffered for the interpretation of measurements from peripheral dual energy X-ray absorptiometry (pDXA) is a triage approach to stratify patients into one of three risk categories; (i) high-treat, (ii) medium-refer for central DXA and (iii) low-reassure. The aim of this study was to apply the triage approach to measures from peripheral scanners and risk indices and stratify patients into one of three risk categories (i), (ii) or (iii). 207 post-menopausal women had central DXA from which they were categorised as non-osteoporotic or osteoporotic. Additional peripheral scans of the left calcaneus were performed on three scanners (GE Lunar Achilles and PIXI, McCue CubaClinical). From demographic details four risk indices were calculated and algorithms combining measures from peripheral scanners and one risk index were obtained. All peripheral measures, risk indices and combination algorithms were good at identifying women at risk of osteoporosis (ROC areas: 0.67-0.82). Each tool stratified varying numbers of osteoporotic and non-osteoporotic women into each risk category using the triage approach. One combination algorithm (PIXI & osteoporosis indices of risk (OSIRIS)) performed best by minimising misclassification (10% non-osteoporotic, 10% osteoporotic) and reducing requirement for central DXA to 36%. However the cost of implementing the triage approach for PIXI & OSIRIS was greater (263%) than central DXA (100%) scanning all women. Although the triage approach was an effective tool at identifying women at risk of osteoporosis the unnecessary treatment of non-osteoporotic women in the high risk category make it impractical. Therefore an alternative more cost-effective method has been suggested.

A review of the evidence for the effectiveness of primary prevention interventions for hepatitis C among injecting drug users

BACKGROUND

Hepatitis C (HCV) prevalence is most common amongst injecting drug users where up to 98% of the population can be infected despite a low prevalence of HIV. This review considers the evidence for the effectiveness of primary prevention interventions to reduce incidence or prevalence of hepatitis C.

METHODS

Systematic review of the major electronic medical databases: Medline, EMBASE, PsycINFO, CINAHL and the Cochrane Library (Evidence Based Health). Either intervention or observational studies were included if they described an intervention targeting injecting drug using populations with the outcome to reduce either the prevalence or incidence of hepatitis C infection.

RESULTS

18 papers were included in the final review from 1007 abstracts. Needle exchange programmes reduce the prevalence of HCV though prevalence remains high. Similarly the effectiveness of methadone maintenance treatment is only marginally effective at reducing HCV incidence. There is limited evidence evaluating either the effectiveness of behavioural interventions, bleach disinfectants, or drug consumption rooms.

CONCLUSION

Primary prevention interventions have led to a reduction in HIV incidence, have been less effective at reducing HCV incidence. Global prevalence of HCV remains disturbingly high in injecting drug users. A robust response to the global health problem of HCV will require provision of new interventions. Behavioural interventions; distribution of bleach disinfectant; other injecting paraphernalia alongside sterile needle distribution; and evaluation of drug consumption rooms merit further expansion internationally and research activity to contribute to the emerging evidence base. Whilst the prevalence of HCV remains high, nevertheless many current interventions aimed at primary HCV prevention have been shown to be cost-effective due to their significant positive impact upon prevalence of HIV.