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Structural Interventions to Reduce HIV Transmission among Injecting Drug Users
This review of the literature identifies what structural interventions are effective in reducing HIV transmission among IDUs. Structural interventions change the environment in which drug use and HIV risk behaviors occur by either making it easier for individuals to practice risk reduction or by making it harder for individuals to engage in risky behaviors. Despite methodological difficulties in evaluating them, structural interventions tend to have large effects due to the nature of their macro-level implementation. The most important structural intervention has been to provide legal access to sterile injection equipment, either through over-the-counter (OTC) pharmacy sales or SEPs. Studies from the United States and Australia find an association between SEPs and a reduction in HIV transmission among IDUs without increasing drug use in the general population. The author cautions that some structural interventions intended to reduce drug use—suppressing noninjecting drug use, restricting distribution and/or possession of needles and syringes, and jailing addicts—may inadvertently increase HIV among drug users. A science-based approach to HIV prevention is urged, particularly as it relates to drug use.
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Comprehensive HIV Prevention for People Who Inject Drugs, Revised Guidance
On July 16, 2010, PEPFAR released revised guidance on comprehensive HIV prevention for people who inject drugs. The revised guidance provides support for a comprehensive package of prevention services that have been scientifically demonstrated to decrease HIV infection risk without increasing drug use, including the following three elements: (1) community-based outreach programs; (2) sterile needle and syringe programs (NSPs); and (3) drug dependence treatment, including medication-assisted treatment (MAT) with methadone, buprenorphine, and/or other effective medications as appropriate, based on the country context.
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Optimal Provision of Needle and Syringe Programmes for Injecting Drug Users: A Systematic Review
This systematic review of studies looking at NSPs compares the efficacy of different types of NSPs, other harm reduction services that they offer, and how such programs are delivered. There were only 16 studies that met the inclusion criteria, including 11 on different types of NSPs, 3 on NSPs and additional harm reduction services, and 2 on the delivery of NSPs in combination with opiate substitution. The paper includes a useful table detailing the design and outcomes of each study. The authors conclude that there is insufficient information to draw firm conclusions about what type of NSP works best overall.
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The Lancet Series: HIV in People Who Use Drugs
This collection of articles represents a call to arms for greater efforts to tackle the issue of HIV among people who use drugs. Commentaries address the myths surrounding drug use and HIV, and the special burden borne by women. Papers cover the risk environment for injection drug users (IDUs), HIV prevention in this population, and treatment of comorbidities among drug users living with HIV. Not only does the series look at biomedical issues such as antiretroviral HIV treatment, opioid substitution, and NSPs, it also covers social issues that prevent effective HIV prevention among IDUs and proposes a human rights-based approach to people who use drugs.
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HIV Prevention, Treatment, and Care Services for People Who Inject Drugs: A Systematic Review of Global, Regional, and National Coverage
This seminal review of estimated national, regional, and global coverage of HIV services for IDUs examines the extent to which NSPs, opioid substitution therapy (OST), and antiretroviral therapy have been implemented. The review spells out the wide regional variations in access to harm reduction and HIV treatment services, and shows that despite the large number of countries with HIV prevention services, coverage of IDUs is too low to prevent HIV transmission in most countries. The authors explain the policy implications of their findings and call for similar reviews of other health problems affecting IDUs, such as tuberculosis and viral hepatitis.
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HIV Prevention among Injecting Drug Users: Strengthening U.S. Support for Core Interventions
This presentation starts with big-picture data on injecting drug use and IDUs living with HIV. Using data sourced from a review of official reports and a survey of country experts, the presenters found that only 1 in 10 IDUs in PEPFAR countries use NSP services, and that those that have access to these services do not receive a sufficient annual supply of needles. Antiretroviral therapy and MAT are also only available to a tiny minority of IDUs in PEPFAR countries. The presentation highlights the barriers to service implementation and the cost of scaling up services, concluding with recommendations for future service provision targets.
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Global Epidemiology of Injecting Drug Use and HIV among People Who Inject Drugs: A Systematic Review
There are nearly 16 million IDUs worldwide (range of 11.0 to 21.2 million) and an estimated 3 million IDUs with HIV (range of 0.75 million to 6.6 million). HIV prevalence among IDUs varies considerably, with nine countries with prevalence rates over 40 percent and another five countries with prevalence between 20 and 40 percent. China, Russia, and the United States had the largest number of IDUs. These data reflect the need to invest in HIV prevention activities, such as syringe and needle exchange programs, OST, and care and treatment for those with HIV. Furthermore, developing capacity to research IDUs in countries will help better understand specific needs among them, and thus program more targeted solutions to reduce HIV transmission and other harms related to injecting drug use.
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Women, Harm Reduction and HIV
These resources examine the unique issues that increase women’s risk of acquiring HIV through injecting drug use and impede their ability to seek support, treatment, and care. Female IDUs are more likely to be infected with HIV than their male counterparts because of both sexual and injection practices. Furthermore, commercial sex work and injecting drug use overlap in many countries, with IDUs more likely to work on the street and experience physical violence. Sexual health services for IDUs are rare. Female IDUs who are pregnant or mothers often lack proper antenatal care and treatment, and often suffer punitive actions from the medical and law enforcement establishments. Programs can address the issues unique to female IDUs by adopting policies that encourage women to seek drug treatment and harm reduction services; incorporating sexual and reproductive health and other women’s services into harm reduction programs; and establishing strong links between harm reduction, drug treatment, women’s shelters, and domestic violence and rape prevention services.
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The Impact of Methadone or Buprenorphine Treatment and Ongoing Injection on Highly Active Antiretroviral Therapy (HAART) Adherence: Evidence from the MANIF2000 Cohort Study
Widespread NSPs and OST programs in France have resulted in dramatic decreases in HIV prevalence among IDUs. What is not known is whether take-home OST has a long-term impact on HAART adherence among IDUs, and therefore, improved clinical outcomes. This study assessed the relationship between OST use and HAART adherence among a cohort of IDUs living with HIV. Subjects who, despite imperfect records of abstinence from injecting during the follow-up period, reported maintaining a six-month period of noninjection in the context of OST, mirrored abstinent injecting drug use in HAART adherence. Length of time using OST without injecting was positively correlated with improved viral load. Despite a small number of patients, the authors conclude that ensuring widespread access to an adequate dose of OST that can be taken home can have a positive impact on sustained adherence to HAART.
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Access to Syringes in Three Russian Cities: Implications for Syringe Distribution and Coverage
Based on interviews with IDUs and data from a community survey, this study found that most respondents used pharmacies to obtain needles and syringes, with only a tiny minority using syringe exchange programs (SEPs). The latter were associated with other benefits such as access to health care services. However, pharmacies were favored, partly because of geographical proximity and low cost, but also because exchanging equipment entails carrying or storing used syringes, which was associated with the risk of police interference or discovery by other people. The authors question the added value of needle exchanges versus pharmacies in resource-poor settings and argue that their data supports the introduction of a distribution model based on established formal and informal networks.
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Interventions to Address HIV in Prisons: HIV Care, Treatment and Support
This technical paper states the case for implementing HIV prevention interventions in prisons. It reviews the existing evidence to ascertain whether prison-based HIV interventions are effective, avoid unintended negative consequences, are acceptable to the target group, have any additional benefits, and are feasible in diverse prison settings. It presents evidence from both the community and prisons to make recommendations for action at international, country, and local levels, in particular making OST, antiretroviral therapy, and HIV testing and counseling available in prisons. The report also highlights the counterproductive nature of mandatory HIV testing and segregation of people living with HIV.
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A Review of the Efficacy and Effectiveness of Harm Reduction Strategies for Alcohol, Tobacco and Illicit Drugs
This review of over 650 articles on harm reduction strategies found that most strategies concerned illicit drugs. The review found compelling evidence to show that NSPs and outreach are useful and cost-effective, but findings to support noninjecting routes of administration, supervised injecting facilities, and naloxone distribution are only beginning to emerge. The existing evidence on brief interventions, HIV testing, and education is not conclusive. The review also evaluates harm reduction as a policy approach and finds that despite difficulties interpreting data, the evidence supports harm reduction as a driver of policy rather than just the basis of individual interventions.
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Do Needle Syringe Programs Reduce HIV infection Among Injecting Drug Users: A Comprehensive Review of the International Evidence
Using commonly accepted criteria for evaluation of public health interventions, this study reviews evidence from 45 studies to find strong evidence that NSPs are effective, safe, and cost-effective. The evidence in favor of NSPs as an HIV prevention intervention is overwhelming, but the availability of sterile needles and syringes from pharmacies is a common confounder in studies looking at NSP implementation and HIV prevention. Moreover, although the benefits of NSPs are proven, they are insufficient on their own to prevent HIV among IDUs. The authors make recommendations for future action and also provide a useful glossary of terms.
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The Social Structural Production of HIV Risk among Injecting Drug Users
The authors of this literature review argue that HIV infection is a behavioral disease, one that is strongly influenced by its surrounding environment. To develop effective HIV prevention programs, we must understand how the environment affects the risk of HIV among IDUs. Social and structural factors that may increase HIV risk are numerous: population movement, neighborhood disadvantage, public injecting spaces, and the criminal justice system, among others. The authors posit that the future of HIV prevention among IDUs depends on the extent structural and environmental interventions are promoted.
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Can HIV-1 Contaminated Syringes be Disinfected? Implications for Transmission among Injection Drug Users
In the absence of support for NSPs in the United States, harm reduction programs encouraged IDUs to disinfect their syringes with bleach. Several population-based studies in the 1990s cast doubt on bleach’s effectiveness in decontaminating used syringes among IDUs. This study recreated real-life situations among IDUs in the United States, including common injection practices, using 2 mL syringes. Based on other studies indicating that IDUs did not always follow the strict bleaching protocol, the study used multiple rinsing permutations (water only, diluted bleach, full-strength bleach; rinsing one, two, or three times; storing syringes for up to 48 days at room temperature) to assess whether these practices could remove HIV from a used syringe. While even one rinse of water could reduce the presence of HIV, number of rinses and adding bleach to the rinsing procedure furthered the decreases in amount of HIV recovered.
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Laws Prohibiting Over-the-Counter Syringe Sales to Injection Drug Users: Relations to Population Density, HIV Prevalence, and HIV Incidence
Some states in the United States have antidrug policies that include restricting the sale of syringes only to those with a prescription. Some researchers argue that such restrictions increase the extent to which IDUs share syringes and perhaps other drug paraphernalia. This cross-sectional analysis compared HIV prevalence and incidence among IDUs in the 96 largest metropolitan areas in the United States based on whether syringes were available OTC. The average HIV prevalence among IDUs in areas allowing OTC sales of syringes was 7 percent, but 14 percent in those with anti-OTC laws, a statistically significant difference. The difference in estimated average HIV incidence among IDUs was even greater: 61 percent in anti-OTC areas versus 17 percent in the other areas. Furthermore, there was no difference in the percentage of IDUs in each area, indicating that anti-OTC policies may have no effect on drug use. While these results may be due to other factors, this study does support that an association exists between anti-OTC policies and increased HIV levels.
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Opiate Substitution Treatment and HIV Transmission in People Who Inject Drugs: Systematic Review and Meta-analysis
This systematic literature review and meta-analysis found that opiate substitution treatment is associated with a 54 percent reduction in HIV risk for people who inject drugs (PWID). A second but weaker finding is that longer exposure to opiate substitution treatment may provide HIV prevention benefits for PWID. According to the authors, these findings are in line with the hypothesis that successful substitution treatment removes PWID from risky injection situations. These results come from the authors’ review of data from 12 published and 3 unpublished observational studies on opiate substitution treatment, specifically methadone maintenance. Their analysis was based on pooled data from nine of the studies, which together yielded 819 incident HIV infections over 23,608 person-years of follow-up. Despite the clear evidence of the benefits of opiate substitution treatment, the authors point out that only an estimated 6 to 12 percent of PWID worldwide are enrolled in this form of therapy. The authors argue that, given rising HIV incidence among PWID in many regions of the world, their findings support opiate substitution treatment for this key population. The authors conclude by urging support for interventions that combine proven prevention approaches for PWID, including opiate substitution therapy, needle and syringe exchange, and other forms of harm reduction programming.





