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Global overview of injecting drug use and HIV infection among injecting drug users

Aceijas C, Stimson GV, Hickman M, Rhodes T, United Nations Reference Group on HIV/AIDS Prevention and Care among IDU in Developing and Transitional Countries

AIDS, 2004 Nov 19;18(17):2295-303.
PMID: 15577542

OBJECTIVE: To provide global estimates of the prevalence of injecting drug use (IDU) and HIV prevalence among IDU, in particular to provide estimates for developing and transitional countries.
METHODS: Collation and review of existing estimates of IDU prevalence and HIV prevalence from published and unpublished documents for the period 1998-2003. The strength of evidence for the information was assessed based on the source and type of study.
RESULTS: Estimates of IDU prevalence were available for 130 countries. The number of IDU worldwide was estimated as approximately 13.2 million. Over ten million (78%) live in developing and transitional countries (Eastern Europe and Central Asia, 3.1 million; South and South-east Asia, 3.3 million; East-Asia and Pacific, 2.3 million). Estimates of HIV prevalence were available for 78 countries. HIV prevalence among IDU of over 20% was reported for at least one site in 25 countries and territories: Belarus, Estonia, Kazakhstan, Russia, Ukraine, Italy, Netherlands, Portugal, Serbia and Montenegro, Spain, Libya, India, Indonesia, Malaysia, Myanmar, Nepal, Thailand, Viet Nam, China, Argentina, Brazil, Uruguay, Puerto Rico, USA and Canada.
CONCLUSIONS: These findings update previous assessments of the number of countries with IDU and HIV-infected IDU, and the previous quantitative global estimates of the prevalence of IDU. However, gaps remain in the information and the strength of the evidence often was weak.

Matched MeSH terms: HIV Infections/epidemiology*
AIDS vaccine research in Asia: needs and opportunities. Report from a UNAIDS/WHO/NIID meeting Tokyo, 28-30 October 1998

AIDS, 1999 Jul 30;13(11):UNAIDS 1-UNAIDS 13.
PMID: 10449273

A meeting was organized by the Joint United Nations Programme on HIV/AIDS (UNAIDS), the World Health Organisation (WHO) and the Japanese National Institute of Infectious Diseases (NIID) with the following objectives: (i) to discuss public health and economic rationale to accelerate the development and evaluation of HIV vaccines suitable for use in Asia; (ii) to review ongoing preclinical HIV vaccine research in Asia; (iii) to review the Asian experience in conducting clinical trials of HIV candidate vaccines; (iv) to explore possibilities for international collaboration between countries in the region and with other countries and institutions; and (v) to discuss issues related to availability of future effective HIV vaccines. The meeting was attended by participants from Australia, China, France, Germany, India, Japan, Malaysia, Myanmar, South Korea, Thailand, United Kingdom, and the United States of America. The HIV epidemic in Asia is rapidly spreading and has already resulted in a total of 7 million HIV infections in the region. The epidemic already has a significant public health and economic impact, which may be worse in the future, unless effective intervention programmes are successfully implemented. A safe, effective, and affordable vaccine should be considered as the best hope for a long-term solution to the HIV epidemic in Asia. Asian scientists and institutions have established a number of international collaborations to isolate and characterize prevalent HIV-1 strains (mostly belonging to subtypes C and E) and are developing candidate vaccines based on these subtypes. In the region, phase I/II clinical trials of preventative HIV candidate vaccines have been conducted in Australia, China and Thailand. Since 1993, a comprehensive National AIDS Vaccine Plan has allowed Thailand to conduct phase I/II trials of six different preventative or therapeutic candidate vaccines, and the first phase III preventative efficacy trial has been approved. The meeting identified both the needs and the opportunities to intensify international collaboration to accelerate the development of HIV vaccines in Asia.

Matched MeSH terms: HIV Infections/epidemiology
The molecular epidemiology of HIV in Asia

Weniger BG, Takebe Y, Ou CY, Yamazaki S

AIDS, 1994;8 Suppl 2:S13-28.
PMID: 7857556
Matched MeSH terms: HIV Infections/epidemiology*
The emerging epidemic of HIV infection and AIDS in Asia and the Pacific

Kaldor JM, Sittitrai W, John TJ, Kitamura T

AIDS, 1994;8 Suppl 2:S1-2.
PMID: 7857551
Matched MeSH terms: HIV Infections/epidemiology*
HIV/AIDS in Malaysia

Ismail R

AIDS, 1998;12 Suppl B:S33-41.
PMID: 9679627
Matched MeSH terms: HIV Infections/epidemiology*
AIDS in Malaysia

Singh J, Che'Rus S, Chong S, Chong YK, Crofts N

AIDS, 1994;8 Suppl 2:S99-103.
PMID: 7857575
Matched MeSH terms: HIV Infections/epidemiology*
Fulltext Material security and adherence to antiretroviral therapy among HIV-positive people who use illicit drugs

Mohd Salleh NA, Van Draanen J, Nosova E, Barrios R, Milloy MJ, Richardson L

AIDS, 2020 06 01;34(7):1037-1045.
PMID: 32073444 DOI: 10.1097/QAD.0000000000002501

OBJECTIVE: To examine the relationship between poverty, operationalized using a novel material security measure, and adherence to antiretroviral therapy (ART) among people who use illicit drugs (PWUD) in a context of universal access to HIV care.
DESIGN: We analyzed data from a community-recruited prospective cohort in Vancouver, Canada (n = 623), from 2014 to 2017.
METHODS: We used multivariable generalized mixed-effects analyses to estimate longitudinal factors associated with mean material security score. We then estimated the association between achieving at least 95% adherence to ART and overall mean material score, as well as mean score for three factors derived from a factor analysis. The three-factor structure, employed in the current analyses, were factor 1 (basic needs); factor 2 (housing-related variables) and factor 3 (economic resources).
RESULTS: Recent incarceration [β-coefficient (β) = -0.176, 95% confidence interval (95% CI): -0.288 to -0.063], unmet health needs [β = -0.110, 95% CI: -0.178 to -0.042), unmet social service needs (β = -0.264, 95% CI: -0.336 to -0.193) and having access to social services (β= -0.102, 95% CI: -0.1586 to -0.0465) were among the factors associated with lower material security scores. Contrary to expectations that low levels of material security in this population would lead to poor ART adherence, we did not observe a significant relationship between adherence and overall material security score, or for each factor individually.
CONCLUSION: Our findings highlight the potentially important role of no-cost, universal access to HIV prevention and treatment, in mitigating the impact of socioeconomic disadvantage on ART adherence.

Matched MeSH terms: HIV Infections/epidemiology
Fulltext Social Network Strategies to Address HIV Prevention and Treatment Continuum of Care Among At-risk and HIV-infected Substance Users: A Systematic Scoping Review

Ghosh D, Krishnan A, Gibson B, Brown SE, Latkin CA, Altice FL

AIDS Behav, 2017 Apr;21(4):1183-1207.
PMID: 27125244 DOI: 10.1007/s10461-016-1413-y

Social network analysis (SNA) and social network-based interventions (SNI) are important analytical tools harnessing peer and family influences critical for HIV prevention and treatment among substance users. While SNA is an effective way to measure social network influences, SNI directly or indirectly involves network members in interventions. Even though these methods have been applied in heterogeneous ways, leading to extensive evidence-based practices, systematic reviews are however, lacking. We searched five bibliographic databases and identified 58 studies involving HIV in substance users that had utilized SNA or SNI as part of their methodology. SNA was used to measure network variables as inputs in statistical/mathematical models in 64 % of studies and only 22 % of studies used SNI. Most studies focused on HIV prevention and few addressed diagnosis (k = 4), care linkage and retention (k = 5), ART adherence (k = 2), and viral suppression (k = 1). This systematic review highlights both the advantages and disadvantages of social network approaches for HIV prevention and treatment and gaps in its use for HIV care continuum.

Matched MeSH terms: HIV Infections/epidemiology
Fulltext The Influence of Neurocognitive Impairment, Depression, and Alcohol Use Disorders on Health-Related Quality of Life among Incarcerated, HIV-Infected, Opioid Dependent Malaysian Men: A Moderated Mediation Analysis

Shrestha R, Weikum D, Copenhaver M, Altice FL

AIDS Behav, 2017 Apr;21(4):1070-1081.
PMID: 27544515 DOI: 10.1007/s10461-016-1526-3

Prior research has widely recognized neurocognitive impairment (NCI), depression, and alcohol use disorders (AUDs) as important negative predictors of health-related quality of life (HRQoL) among people living with HIV (PLWH). No studies to date, however, have explored how these neuropsychological factors operate together and affect HRQoL. Incarcerated male PLWH (N = 301) meeting criteria for opioid dependence were recruited from Malaysia's largest prison. Standardized scales for NCI, depression, alcohol use disorders (AUDs) and HRQoL were used to conduct a moderated mediation model to explore the extent to which depression mediated the relationship between NCI, HRQoL, and AUDs using an ordinary least squares regression-based path analytic framework. Results showed that increasing levels of NCI (B = -0.1773, p HIV treatment, negatively influenced HRQoL via depression for individuals with AUDs. This highlights the need for future interventions to target these complex interplay between neuropsychological factors in order to improve HRQoL among PLWH, particularly incarcerated PLWH with AUDs.

Matched MeSH terms: HIV Infections/epidemiology
Fulltext A Moderated Mediation Model of HIV-Related Stigma, Depression, and Social Support on Health-Related Quality of Life among Incarcerated Malaysian Men with HIV and Opioid Dependence

Shrestha R, Copenhaver M, Bazazi AR, Huedo-Medina TB, Krishnan A, Altice FL

AIDS Behav, 2017 Apr;21(4):1059-1069.
PMID: 28108877 DOI: 10.1007/s10461-017-1693-x

Although it is well established that HIV-related stigma, depression, and lack of social support are negatively associated with health-related quality of life (HRQoL) among people living with HIV (PLH), no studies to date have examined how these psychosocial factors interact with each other and affect HRQoL among incarcerated PLH. We, therefore, incorporated a moderated mediation model (MMM) to explore whether depression mediates the effect of HIV-related stigma on HRQoL as a function of the underlying level of social support. Incarcerated HIV-infected men with opioid dependence (N = 301) were recruited from the HIV units in Kajang prison in Malaysia. Participants completed surveys assessing demographic characteristics, HIV-related stigma, depression, social support, and HRQoL. Results showed that the effect of HIV-related stigma on HRQoL was mediated via depression (a1:β = 0.1463, p HIV-related stigma and depression was negatively associated with HRQOL (β = -0.0317, p = 0.0133). This indicated that the predicted influence of HIV-related stigma on HRQoL via depression had negative effect on HRQoL for individuals with low social support. The results suggest that social support can buffer the negative impact of depression on HRQoL and highlights the need for future interventions to target these psychosocial factors in order to improve HRQoL among incarcerated PLH.

Matched MeSH terms: HIV Infections/epidemiology
Fulltext Gender Differences in HIV Risk Behaviors Among Persons Involved in the U.S. Criminal Justice System and Living with HIV or at Risk for HIV: A "Seek, Test, Treat, and Retain" Harmonization Consortium

Loeliger KB, Biggs ML, Young R, Seal DW, Beckwith CG, Kuo I, et al.

AIDS Behav, 2017 Oct;21(10):2945-2957.
PMID: 28188460 DOI: 10.1007/s10461-017-1722-9

The U.S. female criminal justice (CJ) population is rapidly growing, yet large-scale studies exploring gender-specific HIV risk behaviors in the CJ population are lacking. This analysis uses baseline data on adults with a CJ history from eight U.S. studies in an NIH-funded "Seek, Test, Treat, Retain" harmonization consortium. Data were collected using a standardized HIV risk behavior assessment tool and pooled across studies to describe participants' characteristics and risk behaviors. Multilevel mixed-effects logistic regression models were used to test for gender-based behavior differences. Among 784 HIV-positive (21.4% female) and 5521 HIV-negative (8.5% female) participants, HIV-positive women had higher odds than HIV-positive men of engaging in condomless sexual intercourse (AOR 1.84 [1.16-2.95]) with potentially sero-discordant partners (AOR 2.40 [1.41-4.09]) and of sharing injection equipment (AOR 3.36 [1.31-8.63]). HIV risk reduction interventions targeting CJ-involved women with HIV are urgently needed as this population may represent an under-recognized potential source of HIV transmission.

Matched MeSH terms: HIV Infections/epidemiology*
Adherence to Antiretroviral Therapy Among Incarcerated Persons with HIV: Associations with Methadone and Perceived Safety

Culbert GJ, Waluyo A, Wang M, Putri TA, Bazazi AR, Altice FL

AIDS Behav, 2019 Aug;23(8):2048-2058.
PMID: 30465106 DOI: 10.1007/s10461-018-2344-6

With adequate support, people with HIV (PWH) may achieve high levels of adherence to antiretroviral therapy (ART) during incarceration. We examined factors associated with ART utilization and adherence among incarcerated PWH (N = 150) in Indonesia. ART utilization was positively associated with HIV status disclosure (adjusted odds ratio [aOR] = 5.5, 95% CI 1.2-24.1, p = 0.023), drug dependency (aOR = 3.9, 95% CI 1.2-12.6, p = 0.022), health service satisfaction (aOR = 3.2, 95% CI 1.7-6.2, p

Matched MeSH terms: HIV Infections/epidemiology
Fulltext HIV Prevalence Among People Who Inject Drugs in Greater Kuala Lumpur Recruited Using Respondent-Driven Sampling

Bazazi AR, Crawford F, Zelenev A, Heimer R, Kamarulzaman A, Altice FL

AIDS Behav, 2015 Dec;19(12):2347-57.
PMID: 26358544 DOI: 10.1007/s10461-015-1191-y

The HIV epidemic in Malaysia is concentrated among people who inject drugs (PWID). Accurate estimates of HIV prevalence are critical for developing appropriate treatment and prevention interventions for PWID in Malaysia. In 2010, 461 PWID were recruited using respondent-driven sampling in Greater Kuala Lumpur, Malaysia. Participants completed rapid HIV testing and behavioral assessments. Estimates of HIV prevalence were computed for each of the three recruitment sites and the overall sample. HIV prevalence was 15.8 % (95 % CI 12.5-19.2 %) overall but varied widely by location: 37.0 % (28.6-45.4 %) in Kampung Baru, 10.3 % (5.0-15.6 %) in Kajang, and 6.3 % (3.0-9.5 %) in Shah Alam. Recruitment extended to locations far from initial interview sites but was concentrated around discrete geographic regions. We document the high prevalence of HIV among PWID in Greater Kuala Lumpur. Sustained support for community surveillance and HIV prevention interventions is needed to stem the HIV epidemic among PWID in Malaysia.

Matched MeSH terms: HIV Infections/epidemiology*
HIV-related characteristics among female partners of injecting drug users in Kelantan, Malaysia: a descriptive study

Mohd Nasarruddin A, Wan Mohammad WM, Nik Hussain NH, Ali SH, Zubir HM

AIDS Care, 2015;27(3):301-6.
PMID: 25471247 DOI: 10.1080/09540121.2014.985182

Kelantan, a northeastern state in Peninsular Malaysia, is one of the states that has been acutely hit by injecting drug user (IDU)-driven HIV epidemic, in addition to having a high number of infected women in Malaysia. This cross-sectional study describes the socio-demographic characteristics, HIV risk factors, risk perception, and adoption of preventive behaviors among female partners of IDUs in Kelantan. Out of 101 women, the majority of them are from low socioeconomic background and have no other risk factors besides heterosexual HIV transmission from their male IDU partners. Although 45.5% have not been tested for HIV and more than half (53.5%) of them did not use condoms during sexual intercourse, only 44.6% of the women perceived themselves to be at risk of being infected with HIV. Most of the women (86.1%) were willing to undergo voluntary counseling and testing (VCT). Female partners of IDUs continue to be vulnerable to HIV due to having sexual contact with IDUs, and also due to their socioeconomic position in the community. To prevent HIV transmission among female partners of IDUs, consolidating HIV prevention efforts from multiple approaches is needed.

Matched MeSH terms: HIV Infections/epidemiology*
The relative risk of HIV among IDUs not in treatment in Malaysia

Vicknasingam B, Narayanan S, Navaratnam V

AIDS Care, 2009 Aug;21(8):984-91.
PMID: 20024754 DOI: 10.1080/09540120802657530

Despite the growing HIV threat among injecting drug users (IDUs) in Malaysia, there is a dearth of information on their HIV risk behaviour. This study focused on identifying specific risk behaviours that distinguished HIV positive IDUs from those who were not. For the first time, data on IDUs not in treatment were obtained through a cross-sectional survey of 526 subjects recruited from five selected cities across peninsular Malaysia. A structured questionnaire and face-to-face interviews were utilised to collect detailed information on their drug use practices and sexual behaviours. On-site serological testing determined their HIV and hepatitis C status. The findings indicated that ethnic Malays, who are also Muslims, form the majority of IDUs not in treatment. Bivariate analysis identified six risk factors associated with HIV seropositivity: being 44 years or younger; not holding a regular job; initiating drug use at age 23 or younger; being a morphine user; sharing injecting equipment and having multiple-sex partners. However, only the last two remained significant in multivariate analysis. That sharing contaminated injecting equipment is a significant risk factor strongly justifies the widening of the pilot needle and syringe exchange programme initiated hesitantly in late 2005 as a reaction to the worsening HIV/AIDS situation. Condom use, though not independently significant, remains important because consistent and wider use could neutralise the second risk factor--having multiple-sex partners. The finding that injecting drug use is increasingly occurring in groups underscores the need for outreach programmes that emphasise safe injecting practices in group settings. In addition, counsellors should endeavour to convince drug users to enter treatment since being in treatment appears to reduce risk behaviours. Finally, conservative Muslim unease about harm reduction must be assuaged quickly since Malay Muslims form the majority of IDUs not in treatment.

Matched MeSH terms: HIV Infections/epidemiology*
HIV infection among injecting drug users in north-east Malaysia, 1992

Singh S, Crofts N

AIDS Care, 1993;5(3):273-81.
PMID: 8218462 DOI: 10.1080/09540129308258610

Human immunodeficiency virus (HIV) has spread widely among injecting drug users (IDUs) in countries to the north and west of the 'Golden Triangle' region of South-East Asia; it is likely to have spread southwards to Malaysia as well. In order to assess HIV seroprevalence among IDUs in north-east Malaysia and describe risk factors for HIV infection in this population, we performed a cross-sectional seroepidemiological study among 210 IDUs recruited at the detoxification ward of the General Hospital in the capital city of the north-eastern Malaysian state, Kelantan. Subjects were sequential entrants to the detoxification ward, interviewed about HIV risk behaviour, and tested for antibody to HIV and to syphilis. Nearly a third (62/210, 30%) of these IDUs were HIV seropositive. Three-quarters (159/210) had travelled to Thailand in the preceding 5 years, of whom 32% (51/159) were HIV seropositive; this was associated with injecting in Thailand, but not with sexual contact there. Of those who had not left Malaysia in the preceding 5 years, 26% (11/43) were HIV seropositive, a rate not significantly different from those who had travelled. Travel within Malaysia was common (144/210, 69%) among IDUs interviewed, as was unsafe injecting and unsafe sexual behaviour (20% had shared injecting equipment and 21% had had unprotected intercourse) in other states. In every locale, rates of unsafe injecting behaviour were high (55% sharing in last month), even among those who knew they were HIV infected, and rates of condom usage were low (93% of 160 sexually active IDUs had never used a condom). Syphilis was not associated with HIV infection, but with contact with Thai prostitutes.(ABSTRACT TRUNCATED AT 250 WORDS)

Matched MeSH terms: HIV Infections/epidemiology*
Asia. Vancouver Conference Review

Brown T

AIDS Care, 1997 Feb;9(1):43-9.
PMID: 9155914
Matched MeSH terms: HIV Infections/epidemiology*
Fulltext HIV Testing and awareness of HIV status among people who inject drugs in greater Kuala Lumpur, Malaysia

Bazazi AR, Vijay A, Crawford FW, Heimer R, Kamarulzaman A, Altice FL

AIDS Care, 2018 Jan;30(1):59-64.
PMID: 28803503 DOI: 10.1080/09540121.2017.1363852

HIV testing services are the gateway into HIV treatment and are critical for monitoring the epidemic. HIV testing is recommended at least annually in high-risk populations, including people who inject drugs (PWID). In Malaysia, the HIV epidemic is concentrated among PWID, but their adherence to testing recommendations and the proportion of HIV-positive PWID who are aware of their status remain unknown. We recruited 460 PWID in Greater Kuala Lumpur using respondent-driven sampling and conducted HIV testing. We examined past testing behaviors, estimating testing frequency, correlates of testing in the past 12 months, and the proportion of those living with HIV who were aware of their status. Results showed that most PWID living with HIV (90.4%, 95% CI: 83.6%-95.9%) were aware of their status. Among those never previously diagnosed with HIV, few had accessed HIV testing in the past 12 months (14.3%, 95% CI: 11.1%-18.0%). Prison (57.0%) and compulsory drug detention centers (36.1%) were the primary locations where PWID reported ever being HIV tested, and the main correlate of recent testing in regression was recent criminal justice involvement. Although awareness of HIV status may be high among PWID living with HIV in Kuala Lumpur, testing occurs primarily in prisons and compulsory drug detention centers, where it is involuntary and linkage to care is limited. A shift in HIV testing policy is needed to align health and human rights objectives, replacing mandatory testing with voluntary testing in settings where individuals can be rapidly linked to HIV care.

Matched MeSH terms: HIV Infections/epidemiology*
The HIV/AIDS epidemic country paper: Malaysia

Huang M, Hussein H

AIDS Educ Prev, 2004 Jun;16(3 Suppl A):100-9.
PMID: 15262569

Since the first case of HIV/AIDS was identified in 1986 in Malaysia, the number of infected individuals has increased steadily each year, so that by the end of 2002 the cumulative number of people living with HIV/AIDS was 57,835 (51,256 with HIV and 6,579 with AIDS), with 5,676 AIDS deaths. The epidemic in Malaysia, currently in a concentrated epidemic stage, is primarily fueled by drug use, but there is ample evidence that heterosexual transmission has increased over the last few years. A strategic plan that includes prevention, care, support, and treatment run by both the government and nongovernmental organizations has been in place since the beginning of the epidemic. However, Malaysia will need to take a more pragmatic approach to reduce new infections (which numbered 19 each day in 2002) among the youth on whom the country relies for development. Leaders need to recognize that HIV/AIDS is not just a health issue, but also a socioeconomic concern that can eliminate all the developmental gains achieved over the years. Working together, Malaysians can overcome the epidemic, but there is a need to act quickly and to act in effective ways so that the devastating effects (already evident in the number of AIDS orphans and widows) can be reduced.

Matched MeSH terms: HIV Infections/epidemiology*
A Qualitative Study of Young Men Who Have Sex With Men and Multilevel Factors Related to HIV Risks in Malaysia

Burch WJ, Hart GJ, Lim SH

AIDS Educ Prev, 2018 04;30(2):85-95.
PMID: 29688771 DOI: 10.1521/aeap.2018.30.2.85

Young men who have sex with men (YMSM) are a group at high risk for HIV infection, yet no research has been conducted to understand this population in Malaysia. Semistructured interviews from a combination of YMSM aged 18-25 (n = 20) and local service providers of sexual health services (n = 4) were conducted from May to June 2015. Thematic analysis was used to identify common themes in participant responses from transcripts. Participants reported societal and internalized homophobia, an absence of sex education and difficulty accessing confidential HIV testing. This study provides insights into how homophobia in Malaysian society influences individual risk behavior for HIV in Malaysian YMSM, and makes practical suggestions for more effective HIV prevention in this population.

Matched MeSH terms: HIV Infections/epidemiology

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