Assessment of Acceptability of Pre-exposure Prophylaxis for HIV Prevention Among Men Who Sex with Men and Transgender Community in Pakistan

OBJECTIVE

To assess the level of acceptability of oral pre-exposure prophylaxis (PrEP) among men who have sex with men (MSM) and transwomen (TW) in Pakistan.

STUDY DESIGN

Cross-sectional study. Place and Duration of the Study: Online study portal from September to November 2021.

METHODOLOGY

The study participants were recruited through snowball sampling. Consenting individuals who were >13 years and were identified as MSM or TW were included in the study. Data were analysed using SPSS version 25. Frequencies, percentages and correlation coefficients were computed.

RESULTS

A total of 347 participants were recruited. The mean age of all participants was 29.8 ± 6.7 years. Fifty-eight (19.7%) of the participants had chemsex with amphetamine-type stimulants (ATS) at least once in preceding six months of the study, and 58 (19.7%) had a sexually transmitted infection (STI) in preceding six months whereas 10 (3.4%) participants had used drugs via injection. Two hundred and thirty-eight (72%) of the participants were aware of PrEP, 30 (11.7%) had used PrEP in the past, and 3.88% were currently using PrEP. The willingness to use PrEP, free of cost, was shown by 300 participants (86.45%) and by 180 (54.5%), if available at a low cost.

CONCLUSION

There was a high prevalence of risk factors posing them at considerable risk of human immunodeficiency virus (HIV). The majority was aware of PrEP for HIV prevention. The willingness to use PrEP was high when PrEP was offered free of cost but dropped down when participants were asked to pay for PrEP. Based on this finding, PrEP should be available free of cost at the community preferred outlets.

KEY WORDS

Gay, Men who have sex with men, HIV, Pre-exposure prophylaxis Pakistan, Transwomen, Chemsex, People living with HIV.

A12 EXAMINING THE ASSOCIATIONS BETWEEN PHYSICIAN OR PATIENT GENDER WITH REFERRAL PATTERNS IN GASTROENTEROLOGY FOR NON-SCREENING INDICATIONS

Background

Gender biases in referral may impact patient care, and may perpetuate gender-based pay inequities. Referral patterns of male and female patients to male and female gastroenterologists (GIs) have not been previously characterized.

Purpose

We aimed to determine the extent to which female patients referred for consultation to gastroenterologists were preferentially channeled to female practitioners, and to further assess how gender-based referral channeling has changed over time.

Method

We used data from IC/ES Ontario to identify all residents of Ontario, Canada who had had a new consultation with an Ontario gastroenterologist in an ambulatory setting between Jan 1, 2002, to Dec 31, 2019, with time subdivided into early (2002-2007), mid (2008-2013), and late (2014-2019) periods. New consults were defined as any GI consultation where there had been no ambulatory visit with a different GI in the two years prior. The primary outcome was the difference in the proportion of female patients seen by male GIs vs female GIs. Descriptive statistics were used to compare patient and GI characteristics. Continuous variables were analyzed by the t-test, with p<0.05 suggestive of statistical significance. Odds ratios and their 95% CIs for the association of referral to a female GI and being a female patient were calculated.

Result(s)

From 2002 to 2019, the proportion of female gastroenterologists in Ontario increased from 15% (15/100) to 27% (78/292). During this 18-year period, female GIs saw a total of 17% of all consultations. Male GIs saw a greater number of consultations per year, though the gap closed over the period of observation. Specifically, each female GI in 2014-19 saw, on average, 776 patients (±41.8) compared to 578 (±59.2) in 2002-2007 (p<0.005) – a 34.5% increase; each male GI in 2014-2019 saw, on average, 905 patients (±7.2) compared to 824 (±25.0) in 2002-2007 (p<0.005) – a 9.8% increase.

Female patients made up 56.7% of the total consultations over 2002-2019. There was evidence of channeling of female patients to female providers; in the early period, 72.4% of consults seen by female GIs were female, compared to only 56.8% of consults seen by male GIs (OR 2.07, 95% CI [1.98, 2.17]. By the late era (2014-2019), 64.1% of consults seen by female GIs were for female patients, compared to 53.3% for male GIs (OR 1.62, 95% CI [1.59, 1.66].

Image

Conclusion(s)

There has been a significant increase in the number of female GIs in Ontario in recent years, and female GIs are seeing significantly greater patient volumes in the later eras in comparison to earlier eras. Female GIs receive a higher proportion of consultations for female patients, though this proportion is declining over time. The extent to which this gender-based referral channelling influences patient care, patient outcomes or influences the gender-based provider pay gap requires further exploration.

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Acceptability and feasibility of intra-peer and social media approach for HIV self-testing among men who have sex with men in Karachi: lessons from a pilot study

OBJECTIVE

To use a peer-to-peer and social media approach to reach out to men who have sex with men (MSM) and to distribute human immunodeficiency virus self-testing kits among them in an urban setting.

METHODS

The cross-sectional, pilot study was conducted by a community-based organisation in Karachi from November 2020 to February 2021, and comprised men aged 18 years or above who have sex with men. The subjects were provided one human immunodeficiency virus self-testing kit (HIVST) per person by trained outreach workers. It was an oral fluid-based kit. Data related to demographics, behavioural patterns and human immunodeficiency virus testing detail was collected on a structured questionnaire with some open-ended questions. The analysis of qualitative data was done manually, using content analysis technique in which all common responses were grouped that led to the generation of themes.

RESULTS

There were 150 male subjects with mean age 31.5+/-8.7 years. Overall, 62(41.3%) subjects had received up to 15 years of formal education, 94(62.6%) were first-time testers; 139(92.7%) performed the test at home; 11(7.3%) used the kit at the community-based organisation's office. In terms of results, 1(0.7%) participant had a reactive result which was later confirmed as positive for human immunodeficiency virus. Of the total, 145(96.6%) participants found the instructions and the kit easy to use on their own, 83(55.3%) preferred a social media-based approach, and 68(45.3%) preferred the peer-to-peer approach.

CONCLUSIONS

The HIVST was found to be acceptable among men who have sex with men, while peer-led and social media approaches seemed to be an effective method of information dissemination.

Acceptability and feasibility of HIV self-testing among transgender people in Larkana, Pakistan: Results from a pilot project

Background

HIV self-testing (HIVST) is an innovative HIV testing approach that effectively reaches those who do not otherwise test, including key populations (KPs). Despite potential benefits, HIVST is not currently implemented in Pakistan. The high risk of HIV among transgender (TGs) persons is among the highest risk group for HIV in Pakistan, yet knowledge of HIV status remains low in this key population group. We conducted a pilot project to assess the acceptability and feasibility of distributing HIVST to TGs in Larkana.

Methods

Eligible participants were 18 years or above and self-identified as transgender (“hijra”). One oral fluid HIVST kit per person was distributed free of cost in the community by trained transgender peer outreach workers (ORW). Participants could request a demonstration of the HIVST procedure before performing self-testing which was provided by the trained ORW. Demographic characteristics of participants were collected. The ORW followed up with phone calls two days later to record if HIVST kits were used, the results, and whether assistance was required.

Results

Between November 2020 and February 2021, 150 HIVST kits were distributed to eligible TGs. The average age of participants was 25.5 years (standard deviation: 7.0). Over a third (52, 34.7%) had no formal education, while (16, 10.6%) had attended at least five years of schooling. Over one-third (58, 38.6%) of participants were first-time testers. One hundred and thirty-nine (92.7%) participants reported their results within two days. For the remaining 11 participants, ORWs had to contact them. All participants reported using HIVST kits within three days. A majority (141, 94%) used the kit in their homes, and the remaining nine (6%) used it at the community-based organization’s office. Overall, a small proportion (11, 7.3%) of participants requested a demonstration of the test procedure before performing HIVST. Four (2.7%) participants who had performed unsupervised self-tests reported reactive HIVST results; all were linked to treatment within five working days once their HIV result was confirmed. The majority (136, 90.6%) of participants felt that self-testing was easy to perform independently, and 143 (95%) reported that they would recommend HIVST to their peers.

Conclusion

HIVST is acceptable among TGs and identified by first-time testers as undiagnosed infections. Peer-led distribution appears to be a feasible approach for implementation in this setting. HIVST should be considered for routine implementation and scale up to reduce testing gaps among Pakistan’s key population, particularly TGs.

Index testing among HIV-positive patients is feasible and successful in identifying additional HIV infections in Pakistan

OBJECTIVE

To assess the feasibility of index testing approach to test the parents and siblings of human immunodeficiency virus (HIV)-positive children, and identify HIV-positive individuals.

Methods

The study was conducted at Ratodero, Pakistan. Study participants were enrolled from September 2019 to February 2020. The list of HIV-positive persons was provided by the Sindh AIDS Control Programme. Families of 706 HIV-positive persons were approached and all of them agreed to participate. The first test was performed by trained outreach workers. All those with a reactive first test were transported to the nearest health facility for further testing and confirmation. Mothers and siblings were tested at home while additional visits were carried out to reach the fathers.

RESULTS

A total of 1766 persons were tested through HIV index testing. Biological siblings accounted for 81% of the contacts. We were able to test 413/463 (89.2%) mothers, 232/413 (56.2%) fathers and 1121/1392 (80.5%) siblings. Out of these, 7 mothers (1.7%) and 22 siblings (2.0%) were confirmed to be HIV-positive, while no one was found to be positive among the fathers. The overall HIV prevalence was 1.6% (29/1766). All HIV-positive persons were guided for treatment and care.

CONCLUSIONS

Results indicate that index-testing approach is feasible in Pakistan to expand HIV testing services through home visits.

Examining unsafe injection practices associated with auto-disable (AD) syringes: a systematic review

Auto-disable (AD) syringes are specifically designed to prevent syringe reuse. However, the notion that specific AD syringe designs may be unsafe due to reuse concerns related to the syringe's activation point has surfaced. We conducted a systematic review for evidence on the association between AD syringe design and syringe reuse, adverse events following immunization (AEFI), or blood borne virus (BBV) transmission. We found no evidence of an association between AD syringe design and unsafe injection practices including syringe reuse, AEFIs, or BBVs. Authors of three records speculated about the possibility of AD syringe reuse through intentionally defeating the disabling mechanism, and one hinted at the possibility of reuse of larger-than-required syringes, but none reported any actual reuse instance. In contrast to AD syringes, standard disposable syringes continue to be reused; therefore, the global health community should expand the use of AD syringes in both immunization and therapeutic context as an essential strategy for curbing BBV transmission.

Is Pakistan at the cusp of an ART resistance?

Only 10% of HIV positive individuals in Pakistan are receiving anti-retroviral therapy (ART) and the dropout rate from HIV treatment is extremely high. This short report attempts to highlight the risk of ART resistance. Pakistan National AIDS Control Programme's website reports 15,390 HIV positive persons receiving ART out of which 4,697 (30.5%) are people who inject drugs (PWIDs) among whom HIV prevalence is reported to be 38.4%. In the two large provinces of the country (Punjab and Sindh) with more than 90% burden of HIV, ART was initiated in 2,807 patients between April and September 2018, out of these 37% were lost to follow up. Many patients have cited issues related to quality of service at the ART centres as one of the reasons to not revisiting the treatment centres. HIV planners in Pakistan urgently need to make a new strategy and improve not only the quality of services but also increase the number of HIV positive persons receiving ART.

Hepatitis C elimination in Pakistan is a distant dream unless government controls the health sector

The World Health Organisation (WHO) has set an ambitious target to eliminate hepatitis C virus (HCV) by 2030. Pakistan is one of the focused countries because of the high prevalence of HCV. The prices of direct-acting antiviral drugs(DAA)have significantly reduced to between 11-25 dollars for a month's treatment. To achieve the 2030 elimination target, Pakistan has to provide treatment to one million HCV-infected patients every year, beginning from 2018. This short report highlights a key barrier to achieve this target,i.e. the unsafe practices by regulated and unregulated healthcare delivery system comprising trained and untrained healthcare providers who can continue to churn out new patients with their unsafe healthcare practices and increase the possibility of reinfection in those who have been treated. Only the government has the power and authority to regulate and control the healthcare delivery system. Elimination of Hepatitis in Pakistan will remain a distant dream unless the healthcare delivery system is tamed.

Research on health priorities: a regional agenda and its implementation in Jordan and Pakistan

The Eastern Mediterranean Region (EMR) is facing extraordinary social and health challenges, aggravated by epidemiologic variations, high morbidity and mortality burden (communicable, noncommunicable, injuries), consequences of emergencies (including current COVID-19 pandemic), conflicts and massive migrant population movements. Research for health is essential for generating necessary evidence, which contributes to sustainable development, economic growth and sound health policy-making. Moreover, research for health that addresses national public health priorities is essential for developing required evidence for explanations that contribute towards health improvement and can assist in best utilization of available resources towards issues that maximize the research impact on population health.

Visibility and Analytics Network (VAN) approach to improve immunization supply chain and management performance system in Pakistan

Background

Pakistan has been experiencing several immunization related challenges. The supply chain management information system (MIS) is considered an important component of immunization services as it can improve visibility in key areas such as vaccine shortages or wastage. This study assessed the effectiveness of the Visibility and Analytics Network (VAN) approach in improving vaccine supply and availability of stocks by comparing the situation in intervention and non-intervention districts in Sindh province of Pakistan.

Methods

We utilized a quantitative and qualitative approach to collect data to assess the VAN approach in two districts of Sindh province in Pakistan. The data were collected between August and October 2017. VAN is a systematic monitoring system which measures the performance of vaccine supply chain management based on a set of indicators. We assessed storage facilities of the Expanded Programme on Immunization (EPI) in Sindh and interviewed personnel involved using a pre-tested data collection tool. We also conducted in depth interviews with senior management to assess performance of VAN, adoption mechanism and needs to scale up the VAN approach.

Results

We assessed 52 EPI facilities of Sindh province government. In the intervention district 83.3% managers were using MIS data for decision making related to vaccine supplies whereas in the non- intervention district no MIS based data were available. Ninety percent of stores were maintaining a stock registry and 100% supplies matched with requisitions in the intervention district compared to 40% and 35% in the non-intervention district for the same variables. Vaccine wastage was high in the non- intervention district (BCG 46.7% vs 33.9; OPV 13.5% vs 9.5%; pneumococcal 11.4% vs 7.4%). In-depth interview findings suggested that the VAN approach provided data guided monitoring in Pakistan for the first time. The approach also enabled district managers to make timely decisions.

Conclusion

The VAN approach improves vaccine supply chain management. It should be scaled up and implemented at national or sub national especially in countries struggling with vaccine supply chain management.

Reuse of syringes for therapeutic injections in Pakistan: rethinking determinants

Background

Frequent reuse of syringes during medical injections is fuelling epidemics of human immunodeficiency virus and hepatitis C virus infections in many low- and middle-income countries including Pakistan.

Aims

To explore specific factors related to syringe reuse during therapeutic injections.

Methods

We randomly surveyed 319 healthcare providers from 2 socioeconomically diverse districts in Pakistan, along with 625 of their patients.

Results

Providers see 12-25 patients per day, and provide 7-14 therapeutic injections or intravenous drips. Comparing daily stocks with injections provided, we estimated that 38% of providers (Rawalpindi: 14%, Tando Allah Yar: 44%) likely reuse syringes 2 or 3 times. Rural location and longer duration of practice predict a higher likelihood of reuse. Physicians and non-physicians were equally likely to reuse. Most patients were unaware when a syringe had been reused.

Conclusions

High rate of syringe reuse is driven by high injection demand by patients, to which providers comply. Patients are generally unaware of the harm of injections with syringe reuse or that reuse happens. Our findings suggest that patient focused approaches may help reduce syringe reuse.

Injection practices in 2011-2015: a review using data from the demographic and health surveys (DHS)

Background

Reuse of injection devices to give healthcare injections decreased from 39.8 to 5.5% between 2000 and 2010, but trends since 2011 have not been described. We reviewed results of Demographic and Health Surveys (DHS) to describe injection practices worldwide from 2011 to 2015.

Methods

We searched the DHS Internet site for data published on injection practices conducted in countries from 2011 to 2015, extracted information on frequency (number of healthcare injections per person in the last 12 months) and safety (proportion of syringes and needles taken from a new, unopened package). We compared gender groups and WHO regions in terms of frequency and safety. For countries with data available, we compared injection practices 2004–2010 and 2011–2015.

Results

Since 2011, 40 of 92 countries (43%) that conducted DHS surveys reported on injection practices. On average, the frequency of injection was 1.64 per person per year (from 3.84 in WHO Eastern Mediterranean region to 1.18 in WHO African region). Among those, 96.1% of injections reportedly used new injection devices (from 90.2% in the WHO Eastern Mediterranean region to 98.8% in the WHO Western Pacific region). On average, women received more injections per year (1.85) than men (1.41). Among 16 (40%) countries with data in 2004–2010 and 2011–2015, 69% improved in terms of safety. The annual number of unsafe injections reduced in 81% of countries. In Pakistan, the number of unsafe injections was the highest and did not decrease between 2006 and 2012.

Conclusions

Injection practices have continued to improve in most countries worldwide, although the Eastern Mediterranean region in particular still faces unsafe practices that are not improving. Further efforts are needed to eliminate unsafe injection practices in health care settings, including through the use of reuse-prevention devices. Despite some limitations, DHS is an easily available method to measure progress over time.

The d 3Π state of LiRb

We report our spectroscopic studies of the d ³Π state of ultra-cold ⁷Li⁸⁵Rb using resonantly enhanced multi-photon ionization and depletion spectroscopy with bound-to-bound transitions originating from the metastable a ³Σ⁺ state. We evaluate the potential of this state for use as the intermediate state in a stimulated-Raman-adiabatic-passage transfer scheme from triplet Feshbach LiRb molecules to the X ¹Σ⁺ ground state and find that the lowest several vibrational levels possess the requisite overlap with initial and final states, as well as convenient energies. Using depletion measurements, we measured the well depth and spin-orbit splitting. We suggest possible pathways for short-range photoassociation using deeply bound vibrational levels of this electronic state.

Towards safe injection practices for prevention of hepatitis C transmission in South Asia: Challenges and progress

AIM: To summarize the available information about injection use and its determinants in the South Asian region.

METHODS: We searched published and unpublished literature on injection safety in South Asia published during 1995-2016 using the keywords “injection”“unsafe injection” and “immunization injection” and combined these with each of the countries and/or their respective states or provinces in South Asia. We used a standardized questionnaire to abstract the following data from the articles: the annual number of injections per capita, the proportion of injections administered with a reused syringe or needle, the distribution of injections with respect to prescribers and providers and determinants of injection use.

RESULTS: Although information is very limited for certain countries (i.e., Bhutan, Maldives and Sri Lanka), healthcare injection use is very common across South Asia, with cross-country rates ranging from 2.4 to 13.6 injections/person/year. Furthermore, recent studies show that 5% to 50% of these injections are provided with reused syringes, thus creating potential to transmission of blood-borne pathogens. Qualified and unqualified practitioners, especially in the private sector, are the major drivers behind injection use, but patients also prefer injections, especially among the rural, poor or uneducated in certain countries. According to available data, Pakistan and India have recently taken steps towards achieving safe injection. Potential interventions include the introduction of reuse prevention devices, and patient-, community- and patient/community and provider-centered interventions to change population and practitioner behavior.

CONCLUSION: Injection use is common in South Asian countries. Multilevel interventions aiming at patients, providers and the healthcare system are needed to reduce injection use and reuse.

Risk Factors for Loss to Follow-Up among People Who Inject Drugs in a Risk Reduction Program at Karachi, Pakistan. A Case-Cohort Study

INTRODUCTION

Retention of male people who inject drugs (PWIDs) is a major challenge for harm reduction programs that include sterile needle/syringe exchange in resource-limited settings like Pakistan. We assessed the risk factors for loss to follow-up among male PWIDs enrolled in a risk reduction program in Karachi, Pakistan.

METHODS

We conducted a prospective cohort study among 636 HIV-uninfected male PWIDs enrolled during March-June 2009 in a harm reduction program for the estimation of incidence rate. At 24 months post-enrollment, clients who had dropped out of the program were defined as lost to follow-up and included as cases for case-cohort study.

RESULTS

The median age of the participants was 29 years (interquartile range: 23-36). Active outreach accounted for 76% (483/636) of cohort recruits. Loss to follow-up at 24 months was 25.5% (162/636). In multivariable logistic regression, younger age (AOR: 0.97, 95% CI: 0.92-0.99, p = 0.028), clients from other provinces than Sindh (AOR: 1.49, 95% CI: 1.01-2.22, p = 0.046), having no formal education (AOR: 3.44, 95% CI: 2.35-4.90, p<0.001), a history of incarceration (AOR: 1.68, 95% CI: 1.14-2.46, p<0.008), and being homeless (AOR: 1.47, 95% CI: 1.00-2.19, p<0.049) were associated with loss to follow-up.

CONCLUSIONS

Our cohort retained 74.5% of male PWIDs in Karachi for 24 months. Its loss to follow up rate suggested substantial ongoing programmatic challenges. Programmatic enhancements are needed for the highest risk male PWIDs, i.e., younger men, men not from Sindh Province, men who are poorly educated, formerly incarcerated, and/or homeless.

Frequency of dual tuberculosis/human immunodeficiency virus infection in patients presenting at tertiary care centers at karachi

OBJECTIVE

To determine the frequency of dual infection of Tuberculosis and Human Immunodeficiency Virus (HIV) and document the sexual practices of infected patients.

DESIGN

Cross-sectional study.

PLACE AND DURATION OF STUDY

Medical Unit-IV of Civil Hospital, Karachi, Pakistan, in collaboration with Sindh AIDS Control Program at Services Hospital, Karachi, from January 2003 to December 2004.

PATIENTS AND METHODS

Patients were recruited in the study at both centers and tested for both HIV and TB if any one disease was identified. Diagnosis of TB was based on positive sputum AFB smear / caseous granulomatous lesion on histopathology. Diagnosis of HIV was based on positive anti-HIV serology by LISA technique. A questionnaire was also administered to all the study participants regarding demographics, sexual practices, blood transfusion and intravenous drug abuse.

RESULTS

A total of 196 patients of HIV and TB were screened for the presence of dual infection (TB/HIV). Dual infection was present in 38 (19.39%) of patients. Out of 126 patients of HIV, evidence of TB was detected in 38 (30.16%). During the same duration, 70 patients of tuberculosis were screened for HIV and none was tested positive for HIV. History of illicit sexual relationship was found in 121 (96.03%) patients and 5 of these were homosexuals.

CONCLUSION

Dual infection was present in patients of HIV with TB but vice versa was not documented in this study.

Aspiration in injections: should we continue or abandon the practice?

Aspiration during any kind of injection is meant to ensure that the needle tip is at the desired location during this blind procedure. While aspiration appears to be a simple procedure, it has generated a lot of controversy concerning the perceived benefits and indications. Advocates and opponents of aspiration both make logically sound claims. However, due to scarcity of available data, there is no evidence that this procedure is truly beneficial or unwarranted. Keeping in view the huge number of injections given worldwide, it is important that we draw attention to key questions regarding aspiration that, up till now, remain unanswered. In this review, we have attempted to gather and present literature on aspiration both from published and non-published sources in order to provide not only an exhaustive review of the subject, but also a starting point for further studies on more specific areas requiring clarification. A literature review was conducted using the US National Institute of Health’s PubMed service (including Medline), Google Scholar and Scopus. Guidelines provided by the World Health Organization, Safe Injection Global Network, International Council of Nursing, Center for Disease Control, US Federal Drug Agency, UK National Health Services, British Medical Association, Europe Nursing and Midwifery Council, Public Health Agency Canada, Pakistan Medical Association and International Organization of Standardization recommendations 7886 parts 1-4 for sterile hypodermics were reviewed for relevant information. In addition, curricula of several medical/nursing schools from India, Nigeria and Pakistan, the US pharmacopeia Data from the WHO Program for International Drug Monitoring network in regard to adverse events as a result of not aspirating prior to injection delivery were reviewed. Curricula of selected major medical/nursing schools in India, Nigeria and Pakistan, national therapeutic formularies, product inserts of most commonly used drugs and other possible sources of information regarding aspiration and injections were consulted as well.

Correlates of Knowledge of HIV Transmission Among Incident Cases of HIV in a Cohort of Injection Drug Users Receiving Harm Reduction Services at Karachi, Pakistan

BACKGROUND

Knowledge of risk factors for HIV transmission in high-risk population plays a critical role in averting the risk of HIV transmission. In Pakistan, injection drug users (IDUs) constitute the core risk group of HIV prevalence, where the epidemic has transitioned to a "concentrated level." Still nothing is known about the role of knowledge in HIV transmission and HIV sero-conversion among IDUs in Pakistan.

METHODS

From 2009 to 2011, a nested case-control study was conducted in a cohort of 636 IDUs receiving harm reduction services in the mega city of Karachi.

RESULTS

In multivariable regression analysis, 3 factors, namely HIV does not spread through unprotected sex (adjusted odds ratio [AOR]: 3.1, 95% confidence interval [CI] 1.39-6.90, P value .01), HIV does not transmit by sharing syringes (AOR: 3.5, 95% CI 1.97-6.40, P value <.00), and the risk of HIV cannot be minimized by using new syringe every time (AOR: 2.0, 95% CI 1.16-3.60, P value .01), were significantly associated with the incident cases of HIV.

CONCLUSION

The study findings suggest the association between knowledge of HIV transmission and HIV sero-incident cases.

High HIV incidence among persons who inject drugs in Pakistan: greater risk with needle sharing and injecting frequently among the homeless

Background

The incidence of HIV among persons who inject drugs (PWIDU) has fallen in many nations, likely due to successes of clean needle/syringe exchange and substance abuse treatment and service programs. However in Pakistan, prevalence rates for PWID have risen dramatically. In several cities, prevalence exceeded 20% by 2009 compared to a 2003 baseline of just 0.5%. However, no cohort study of PWID has ever been conducted.

Methods

We enrolled a cohort of 636 HIV seronegative PWID registered with three drop-in centers that focus on risk reduction and basic social services in Karachi. Recruitment began in 2009 (March to June) and PWID were followed for two years. We measured incidence rates and risk factors associated with HIV seroconversion.

Results

Incidence of HIV was 12.4 per 100 person-years (95% exact Poisson confidence interval [CI]: 10.3–14.9). We followed 474 of 636 HIV seronegative persons (74.5%) for two years, an annual loss to follow-up of <13 per 100 person years. In multivariable Cox regression analysis, HIV seroconversion was associated with non-Muslim religion (Adjusted risk ratio [ARR] = 1.7, 95%CI:1.4, 2.7, p = 0.03), sharing of syringes (ARR = 2.3, 95%CI:1.5, 3.3, p<0.0001), being homeless (ARR = 1.7, 95%CI:1.1, 2.5, p = 0.009), and daily injection of drugs (ARR = 1.1, 95%CI:1.0, 1.3, p = 0.04).

Conclusions

Even though all members of the cohort of PWID were attending risk reduction programs, the HIV incidence rate was very high in Karachi from 2009–2011. The project budget was low, yet we were able to retain three-quarters of the population over two years. Absence of opiate substitution therapy and incomplete needle/syringe exchange coverage undermines success in HIV risk reduction.

Patterns and trends in Pakistan's heterogeneous HIV epidemic

BACKGROUND

Considerable HIV transmission occurs among injection drug users (IDUs) in Pakistan and recently the HIV prevalence has been increasing among male (MSW), hijra (transgender; HSW) and female (FSW) sex workers. We describe past and estimate future patterns of HIV emergence among these populations in several cities in Pakistan.

METHODS

The density of these key populations per 1000 adult men was calculated using 2011 mapping data from Karachi, Lahore, Faisalabad, Larkana, Peshawar and Quetta, and surveillance data were used to assess bridging between these key populations. We used the UNAIDS Estimation and Projection Package model to estimate and project HIV epidemics among these key populations in Karachi, Lahore, Faisalabad and Larkana.

RESULTS

The density and bridging of key populations varied across cities. Lahore had the largest FSW population (11.5/1000 adult men) and the smallest IDU population (1.7/1000 adult men). Quetta had the most sexual and drug injection bridging between sex workers and IDUs (6.7%, 7.0% and 3.8% of FSW, MSW and HSW, respectively, reported injecting drugs). Model evidence suggests that by 2015 HIV prevalence is likely to reach 17-22% among MSWs/HSWs in Karachi, 44-49% among IDUs in Lahore and 46-66% among IDUs in Karachi. Projection suggests the prevalence may reach as high as 65-75% among IDUs in Faisalabad by 2025. HIV prevalence is also estimated to increase among FSWs, particularly in Karachi and Larkana.

CONCLUSIONS

There is a need to closely monitor regional and subpopulation epidemic patterns and implement prevention programmes customised to local epidemics.

Research fatigue among injecting drug users in Karachi, Pakistan

Background

Karachi is the largest metropolis of Pakistan and its economic hub attracting domestic migrants for economic opportunities. It is also the epicenter of HIV epidemic in the country. Since 2004, one pilot study and four behavioral and biological surveillance rounds have been conducted in Karachi. In addition many student research projects have also focused on key risk groups including injection drug users (IDUs). As a result of this extra ordinary exposure of same kind of questions, IDUs know how to respond to high value questions related to sharing of needles or unsafe sexual practices. The purpose of the study was to explore the element of research fatigue among IDUs in Karachi, Pakistan.

Methods

The study was conducted on 32 spots in Karachi, selected on the basis of estimate of IDUs at each spot. A trained field worker (recovered IDU) visited each spot; observed sharing behavior of IDUs and asked questions related to practices in January 2009. Verbal consent was obtained from each respondent before asking questions.

Results

On average 14 IDUs were present at each spot and out of 32 selected spots, 81% were active while more than two groups were present at 69% spots. In each group three to four IDUs were present and everyone in the group was sharing. One dose of injecting narcotics was observed. Sharing of syringes, needles and distilled water was observed at 63% spots while professional injector/street doctor was present at 60% spots.

Conclusion

There is a need to check internal consistency in surveillance research. It is highly likely that IDUs and other risk groups know how to respond to key questions but their responses do not match with the practices.

Lessons learned from a community based intervention to improve injection safety in Pakistan

BACKGROUND

A national study in 2007 revealed that in Pakistan the prevalence of hepatitis B is 2.5% and for hepatitis C it is 5%. Unsafe injections have been identified as one of the reasons for the spread of these infections. Trained and untrained providers routinely perform unsafe practices primarily for economic reasons i.e. they reuse injection equipment on several patients. The patients, do not question the provider about the need for an injection because of social barriers or whether the syringe is coming from a new sterile packet due to lack of knowledge. The present paper represents an intervention that was developed to empower the community to improve unsafe injection practices in rural Pakistan.

METHODS

In a rural district of Pakistan (Tando Allahyar, Sindh) with a population of approximately 630,000 a multipronged approach was used in 2010 (June to December) to improve injection safety. The focus of the intervention was the community, however providers were not precluded. The organization of interventions was also carefully planned. A baseline assessment (n=300) was conducted prior to the intervention. The interventions comprised large scale gatherings of the community (males and females) across the district. Smaller gatherings included teachers, imams of mosques and the training of trained and untrained healthcare providers. The Pakistan Television Network was used to broadcast messages recorded by prominent figures in the local language. The local FM channel and Sunday newspaper were also used to disseminate messages on injection safety. An end of project assessment was carried out in January 2012. The study was ethically reviewed and approved.

RESULTS

The interventions resulted in improving misconceptions about transmission of hepatitis B and C. In the baseline assessment (only 9%) of the respondents associated hepatitis B and C with unsafe injections which increased to 78% at the end of project study. In the baseline study 15% of the study participants reported that a new syringe was used for their most recent injection. The post-intervention findings showed an increase to 29% (n=87).

CONCLUSION

It is difficult to assess the long-term impact of the intervention but there were several positive indicators. The duration of intervention is the key to achieving a meaningful impact. It has to be at least 18-24 months long.

Geographical and temporal variation of injection drug users in Pakistan

Objectives

We describe the characteristics of injecting drug users (IDU) in Pakistan in 2006 and 2011, and assess the heterogeneity of IDU characteristics across different cities and years as well as factors associated with HIV infection.

Methods

Cross-sectional, integrated behavioural-biological surveys of IDU were conducted in 10 cities across Pakistan in 2006 and 2011. Univariate and multivariable analyses were used to describe the differences in HIV prevalence and risk behaviours between cities and over time.

Results

Large increases in HIV prevalence among injection drug users in Pakistan were observed, with overall HIV prevalence increasing from 16.2% in 2006 to 31.0% in 2011; an increase in HIV prevalence was also seen in all geographic areas except one. There was an increase in risk behaviours between 2006 and 2011, anecdotally related to a reduction in the availability of services for IDU. In 2011, larger proportions of IDU reported injecting several times a day and using professional injectors, and fewer reported always using clean syringes. An increase in the proportion living on the street was also observed and this was associated with HIV infection. Cities differ in terms of HIV prevalence, risk profiles, and healthcare seeking behaviours.

Conclusions

There is a high prevalence of HIV among injection drug users in Pakistan and considerable potential for further transmission through risk behaviours. HIV prevention programs may be improved through geographic targeting of services within a city and for involving groups that interact with IDU (such as pharmacy staff and professional injectors) in harm reduction initiatives.

Determinants of HIV sero-conversion among male injection drug users enrolled in a needle exchange programme at Karachi, Pakistan

OBJECTIVE

To assess the determinants of HIV sero-conversion among male injection drug users enrolled in needle exchange programme at Karachi.

METHODS

An unmatched retrospective case control study was conducted among male injection drug users receiving needle exchange services in Karachi. The cases and controls were identified from one drop in center providing needle exchange services. The data for the study participants was collected retrospectively from the programme. Descriptive statistics, univariat analysis, and multivariate regression analysis for determinants of HIV sero-conversion and Hosmer and Lameshow goodness of fit test for model adequacy were performed.

RESULTS

Mean age of the study participants was 34.17 +/- 10.74 years. Average monthly income of the participants was US$ 125.15 +/- 76.32. In unconditional multivariate regression analysis being unmarried (AOR: 3.0 95% CI 1.14-7.9, p=0.02), not living with family (AOR: 2.8 95% CI 1.18-6.79 p = 0.02), family history of addiction (AOR: 2.5, 95% CI 1.01-6.49, p = 0.04), injecting drugs in groups (AOR: 2.8, 95% CI 1.12 7.02 p=0.02), not obtaining syringes from the programme (AOR: 26.45, 95% CI 2.47-282.8 p = 0.007), and history of blood transfusion (AOR: 52.9, 95% CI 1.32-2118.416 p = 0.03) were significantly associated with HIV positive sero-status. Model adequacy was assessed by Hosmer and Lameshow goodness of (J: 4.95, p = 0.7) indicating that the model was accurate.

CONCLUSION

Social and drug related risky behaviours are important determinants of HIV among male IDUs in Karachi. The situation calls for programmematic initiatives for addressing the risky behaviours among IDUs for effective control of epidemic in the country.

Size estimation, HIV prevalence and risk behaviours of female sex workers in Pakistan

OBJECTIVE

To provide size estimation and to determine risky behaviours and HIV prevalence among female sex workers in Pakistan, which has progressed from a low to concentrated level of HIV epidemic.

METHODS

A cross-sectional study (geographic mapping and integrated behavioural and biological survey-IBBS) was conducted between August 2005 to January 2006 in Karachi, Hyderabad and Sukkur. A detailed questionnaire and dry blood spot (DBS) specimen for HIV testing were collected by trained interviewers after informed consent. The study was ethically approved by review boards in Canada and Pakistan.

RESULTS

About 14,900 female sex workers were estimated to be functional in Sindh. A total of 1158 of them were interviewed for the study. Average age of sex workers was 27.4 +/- 6.7 years, and the majority 787 (67.9%) were married, and uneducated 764 (65.9%). Sindhi (26.4%) was the predominant ethnicity. Mean number of paid clients was 2.1 +/- 1.2. three workers were confirmed HIV positive (0.75%, 95 percent CI 0.2-2.2%) from Karachi. Condom use at last sexual act was highest (68%) among brothel-based workers from Karachi, and the lowest in Sukkur where only 1.3% street-based workers reported using a condom at last sexual act. Overall use of illicit drugs through injections was negligible.

CONCLUSION

HIV prevalence among female sex workers in Sindh, Pakistan is low but risky behaviours are present. Well organised service delivery programmes can help promoting safer practices.

Comparing risk factors of HIV among hijra sex workers in Larkana and other cities of Pakistan: an analytical cross sectional study

Background

In 2005, Pakistan was first labeled as a country with concentrated epidemic of Human Immunodeficiency Virus (HIV). This was revealed through second generation surveillance conducted by HIV/AIDS Surveillance Project (HASP). While injection drug users (IDUs) were driving the epidemic, subsequent surveys showed that Hijra (transgender) sex workers (HSWs) were emerging as the second most vulnerable group with an average national prevalence of 6.4%. An exceptionally high prevalence (27.6%) was found in Larkana, which is a small town on the right bank of river Indus near the ruins of Mohenjo-Daro in the province of Sindh. This paper presents the risk factors associated with high prevalence of HIV among HSWs in Larkana as compared to other cities of the country.

Methods

Data were extracted for secondary analysis from 2008 Integrated behavioral and biological survey (IBBS) to compare HSWs living in Larkana with those living in other cities including Karachi and Hyderabad in Sindh; Lahore and Faisalabad in Punjab; and Peshawar in Khyber Pakhtunkhwa provinces. After descriptive analysis, univariate and multivariate analyses were performed to identify risk factors. P value of 0.25 or less was used to include factors in multivariate analysis.

Results

We compared 199 HSWs from Larkana with 420 HSWs from other cities. The average age of HSWs in Larkana was 26.42 (±5.4) years. Majority were Sindhi speaking (80%), uneducated (68%) and unmarried (97%). In univariate analysis, factors associated with higher prevalence of HIV in Larkana included younger age i.e. 20–24 years (OR: 5.8, CI: 2.809–12.15), being unmarried (OR: 2.4, CI: 1.0–5.7), sex work as the only mode of income (OR: 5.5, CI: 3.70–8.2) and longer duration of being involved in sex work 5–10 years (OR: 3.3, CI: 1.7–6.12). In multivariate logistic regression the HSWs from Larkana were more likely to lack knowledge regarding preventive measures against HIV (OR 11.9, CI: 3.4–41.08) and were more prone to use of alcohol during anal intercourse (OR: 6.3, CI: 2.77–17.797).

Conclusion

Outreach programs focusing on safer sexual practices and VCT are urgently needed to address the upsurge of HIV among HSWs in Larkana.

Antiretroviral drug resistance mutations among treated and treatment-naive patients in Pakistan: diversity of the HIV type 1 pol gene in Pakistan

Pakistan is experiencing a growing HIV epidemic. Antiretroviral drugs (ARV) have been smuggled into the country and available without prescription since the early 1990s, but are now provided free of cost by the government. We assessed the prevalence of HIV-1, drug resistance, and subtype distributions. Blood specimens were collected from HIV-1-infected participants registered in Sindh Province on dry blood spot (DBS) cards in 2008. Pol, protease, and partial reverse transcriptase regions were sequenced after reverse transcriptase PCR (RT-PCR). HIV-1 subtype was assigned by phylogenetic analysis. Primary drug resistance was analyzed by the Calibrated Population Resistance (CPR) tool using the Stanford Surveillance Drug Resistance Mutation (SDRM) major mutation list. Out of 100 blood samples collected, 42 were suitable for testing. Out of 42, 11 were ARV-receiving and 31 ARV-naive patients. Among them, 24 were injection drug users (IDUs), four immigrants, two hijras (male transvestites), two men who have sex with men (MSM), four prisoners, one female sex workers, two spouses of HIV-infected persons, and four from the general population. ARV resistance among naive patients was 2/31 (6.5%) and 36.4% (4/11) among ARV-experienced patients making an overall resistance of 14.2%. HIV-1 subtype A1 was the predominant subtype found in 35/42 (83.3%) followed by CRF35_AD and C, 6.5% each. Subtype D and G were found in one (2.4%) each. A significant proportion of Pakistani HIV patients has ARV drug resistance. Physicians treating patients should consider the magnitude of drug resistance while selecting regimens, and address drug adherence aggressively.

Condom use during commercial sex among clients of Hijra sex workers in Karachi, Pakistan (cross-sectional study)

Objective To describe the prevalence and predictors of condom use and sexual risk in the male clients of Hijra sex workers (HSWs) in Karachi, Pakistan. Design Cross-sectional study. Setting Karachi, Pakistan. Participants Clients of HSWs were recruited with assistance from HSWs and a non-governmental organisation (NGO) focused on men who have sex with men (MSM) during October-November 2010. Measurements The interviewer administered the questionnaire to each participant to solicit information on demographics, HIV/AIDS knowledge/attitudes and sexual risk behaviours/practices, including condom use in the last sexual act with the HSW. Results Of the 203 participants, 42.4% reported that they used condoms during their last sexual act with HSW, 40% were married, 18% had ever used drugs or alcohol, and 52% reported also engaging with female sex workers in the last month. Casual HSW clients were more likely to use condoms than regular clients (adjusted OR (AOR), 2.50; 95% CI 1.34 to 4.65), as were persons with a higher education level (AOR 5.8; 95% CI 1.6 to 20.3). Drug/alcohol users and non-users were equally likely to use condoms (AOR 1.11; 95% CI 0.51 to 2.24). Conclusion Clients of HSWs in Pakistan are at risk of acquiring HIV/STI infections. Concerted efforts are needed to increase condom use in this key bridge population to curtail the spread of HIV in the general population.

High-risk behaviours among juvenile prison inmates in Pakistan

OBJECTIVES

To assess the sexual- and drug-use-related risk behaviours of male juvenile detainees in Karachi, Pakistan.

DESIGN

Cross-sectional study.

METHODS

A cross-sectional study was conducted of prison inmates aged 15-21 years in Karachi Juvenile Prison in 2002. In total, 321 inmates were interviewed about sexual orientation and behaviours, and knowledge about human immunodeficiency virus (HIV) and sexually transmitted infections (STIs). Urine specimens were collected and tested for Chlamydia trachomatis and Neisseria gonorrhoeae using ligase chain reaction.

RESULTS

A substantial proportion (n=111, 34.6%) of the participants were sexually active. Sixty-two (19%) and 67 (21%) had had sex with a male or female before incarceration, respectively. Twenty-seven (8.4%) participants had an STI, and 50% of the 109 sexually active participants had had multiple sexual partners. Use of addictive substances was associated with sexual activity. The mean knowledge score computed from the sum of 16 items was 4.7, with a median of 2.9. A large proportion (40%) of participants knew about condoms, but very few (3.4%) had ever used one. The mean+/-standard deviation risk score from nine items was 2.4+/-1.7. On the basis of behavioural and biological markers, 117 (36.4%) participants had high-risk behaviour. In multivariate logistic regression analysis, knowledge, risk perception and age were predictive of higher risk.

CONCLUSIONS

HIV risk behaviours are common among adolescent inmates. Although inmates do have knowledge about modes of transmission and condom use, the use of condoms is significantly low. Interventions are needed for behavioural change among this group.

BCG protects toddlers during a tuberculosis outbreak

In 2007, an outbreak of tuberculosis occurred in a toddler population attending two child care centres in Cork, Ireland. Of 268 children exposed, 18 were eventually diagnosed with active tuberculosis. We present the initial clinical and radiographic characteristics of the active disease group. Mantoux testing was positive in only 66% of cases. All cases were either pulmonary or involved hilar adenopathy on chest radiograph; there were no cases of disseminated disease or meningitis. 24% of the exposed children had been previously vaccinated with BCG, and no case of active disease was found in this group (p = 0.016), suggesting a profound protective effect of BCG in this population. Our experience provides evidence supporting a protective effect of BCG against pulmonary disease in young children.

High prevalence of HIV infection among injection drug users (IDUs) in Hyderabad and Sukkur, Pakistan

OBJECTIVE

To estimate size of injection drug users (IDU), determine their high risk behaviours and assess the prevalence of HIV.

METHOD

As part of second generation surveillance (SGS), we investigated specific demographic and behavioural characteristics of IDUs in Hyderabad and Sukkur in 2005. It was a cross sectional study. The survey was preceded by geographic mapping to determine size estimation and to define sampling procedures prior to integrated behavioural and biological survey (IBBS). A sample size of at least 400 was calculated for each city. Besides calculating frequencies, chi square was used for comparing variables among HIV positive and negative IDUs like time elapsed as IDU, number of injections, sharing needles and self perception of acquiring HIV infection.

RESULTS

A total of 800 (Hyderabad 398; Sukkur 402) questionnaires and DBS samples were collected. The estimated number of IDUs in both cities was 3,225 (Hyderabad 975 and Sukkur 2250 respectively). Average age of IDUs in Hyderabad was 36.5 years and 34.6 years in Sukkur. Sharing of injection equipment for last injection was reported by 34 (8.5%) in Hyderabad and 135 (33.6%) in Sukkur. In both cities behaviours such as injecting drugs for more than 10 years (p = 0.00) and injecting four or more times in a day (p = 0.11) were significantly associated with seropositivity of HIV infection. In Hyderabad the seroprevalence of HIV was 25.4% (101/398) and in Sukkur it was 19.2% (77/402).

CONCLUSION

The burden of HIV among IDUs in Hyderabad and Sukkur is extremely high and can play a significant role in transmitting the infection to other vulnerable groups.

High risk behaviors of injection drug users registered with harm reduction programme in Karachi, Pakistan

BACKGROUND

Surveillance data of Sindh AIDS Control Programme, Pakistan suggest that HIV infection is rapidly increasing among IDUs in Karachi and has reached 9% in 2004-5 indicating that the country has progressed from nascent to concentrated level of HIV epidemic. Findings of 2nd generation surveillance in 2004-5 also indicate 104/395 (26.3%) IDUs HIV positive in the city.

METHODS

We conducted a cross sectional study among registered IDUs of a needle exchange and harm reduction programme in Karachi, Pakistan. A total of 161 IDUs were included in the study between October-November 2003. A detailed questionnaire was implemented and blood samples were collected for HIV, hepatitis B & C and syphilis. HIV, hepatitis B and C antibody tests were performed using Enzyme Linked Immunosorbent Assay (ELISA) method. Syphilis tests (RPR & TPHA) were performed on Randox kit. Besides calculating frequencies univariate analysis was performed using t tests for continuous variables as age, age at first intercourse and average age of initiation of addiction and chi square for categorical variables like paid for sex or not to identify risk factors for hepatitis B and C and syphilis.

RESULTS

Average age of IDU was 35.9 years and average age of initiation of drugs was 15.9 years. Number of drug injections per day was 2.3. Shooting drugs in group sharing syringes was reported by 128 (79.5%) IDUs. Over half 94 (58.3%) reported paying for sex and 64% reported never using a condom. Commercial selling of blood was reported by 44 (28%). 1 of 161 was HIV positive (0.6%). The prevalence of hepatitis B was 12 (7.5%), hepatitis C 151 (94.3%) and syphilis 21 (13.1%). IDUs who were hepatitis C positive were more likely to start sexual activity at an earlier age and had never used condoms. Similarly IDUs who were hepatitis B positive were more likely to belong to a younger age group. Syphilis positive IDUs were more likely to have paid for sex and had never used a condom.

CONCLUSION

Prudent measures such as access to sterile syringes, rehabilitation and opiate substitution therapies are required to reduce high risk behaviors of IDUs in Pakistan.

The cost of unsafe injections in pakistan and challenges for prevention program

The burden of disease associated with unsafe therapeutic injection practices in Pakistan is very high. The number of injection per person per year has been estimated to be in the range of 8.2 to 13.6, one of the highest in developing world. Extrapolating this number to the whole country would result in 1.5 billion injections per year. Approximately 4% (75 million) of these are administered for immunization while the remainders are used for therapeutic use. Of these, 94.2% are unnecessary. Average price of an injection (not the complete prescription) is Rs. 20.6 (0.34 US dollars). Under conservative estimate, over three billion rupees or 500 million dollars out-of-pocket healthcare resources may be wasted each year. Appropriate use of injections would be highly cost effective. According to adjusted analysis, safe and appropriate use of injection in Pakistan would cost 92 million US dollars each year with a high proportion that would be injection devices paid through out-of-pocket expenses. Behaviour change for reduction in number of injections require long-term multidimentional efforts. Interventions in the form of phasing out of convention disposable injection equipment and switching to reuse prevention devices for all injections could prevent the common practice of reuse, hence reducing the transmission of infections.

Hepatitis B and C infection in first-time blood donors in Karachi--a possible subgroup for sentinel surveillance

Hepatitis B virus (HBV) and C virus (HCV) are major public health concerns in Pakistan. We conducted a baseline analysis of first-time replacement blood donors at the blood bank of Jinnah Postgraduate Medical Centre in the year 2000 with the view to developing low-cost sentinel surveillance for these infections. Among 7325 such donors, 264 (3.6%) were positive for anti-HCV and 344 (4.7%) for HBsAg. HCV seroprevalence was significantly positively associated with age and lower education. Those speaking Sindhi or other minor languages had a significantly higher prevalence of HBV infection. Blood bank data could provide reliable information to monitor trends in prevalence of these infections.

Background demographics and risk behaviors of injecting drug users in Karachi, Pakistan

OBJECTIVE

To find the prevalence of HIV infection and risk behaviors among injecting drug users (IDUs) in Karachi, Pakistan.

DESIGN

A cross-sectional study of IDUs conducted in Karachi, Pakistan from February through June 1996.

RESULTS

Of the 242 IDUs, 11 (4%) refused HIV testing. One (0.4%; 95% confidence interval (CI) = 0.37-0.48%) was HIV positive. All subjects were male. Over the past 6 months 47% had engaged in receptive needle sharing, 38% had perceived a change in their social network, 22% had had sexual intercourse, of whom only 7% always used condoms, and none had washed their needles with bleach. Younger age (28 vs. 31 years; p = 0.01), younger age at first injection (25 vs. 28 years; p = 0.001), fewer years of schooling (3 vs. 5 years; p = 0.001), lower monthly income (70 dollars vs. 80 dollars; p = 0.03), inhaling fumes of heroin from a foil in the year before injecting (OR = 4.8; CI = 2.2-10.3), injecting first time with heroin (OR = 3.6; CI = 1.2-12.6), having a temporary job (OR = 2.5; CI = 1.2-5.2), and a perceived change in one's social network (OR = 4.4; CI = 2.4-7.9) were all associated with receptive needle sharing. IDUs who knew about HIV spread through contaminated needles were less likely to share (OR = 0.4; CI 0.2-0.8). In the final logistic regression model receptive needle sharing was associated with inhaling of fumes of heroin on a foil in the year prior to injecting (adjusted OR = 5.6; CI = 2.6-12.0), a perceived change in one's social network (adjusted OR = 4.0; CI = 2.2-7.4), and inversely associated with age at first time of injection (beta = -0.07; p = 0.002).

CONCLUSION

Background HIV prevalence was low among IDUs in Karachi despite high-risk behavior in 1996. In order to control HIV transmission among IDUs in Pakistan, continual HIV surveillance with well-coordinated and effective HIV risk reduction, and drug demand reduction programs need to be implemented among drug users.