Stephen F. Morin

Community-based intervention to increase HIV testing and case detection in people aged 16–32 years in Tanzania, Zimbabwe, and Thailand (NIMH Project Accept, HPTN 043): a randomised study

BACKGROUND In developing countries, most people infected with HIV do not know their infection status. We aimed to assess whether HIV testing could be increased by combination of community mobilisation, mobile community-based voluntary counselling and testing (VCT), and support after testing. METHODS Project Accept is underway in ten communities in Tanzania, eight in Zimbabwe, and 14 in Thailand. Communities at each site were paired according to similar demographic and environmental characteristics, and one community from each pair was randomly assigned to receive standard clinic-based VCT (SVCT), and the other community was assigned to receive community-based VCT (CBVCT) plus access to SVCT. Randomisation and assignment of communities to intervention groups was done by the statistics centre by computer; no one was masked to treatment assignment because the interventions were community based. Intervention was provided for about 3 years (2006-09). The primary endpoint of HIV incidence is pending completion of assessments after the intervention. In this interim analysis, we examined the secondary endpoint of uptake in HIV testing, differences in characteristics of clients receiving their first HIV test, and repeat testing. Analyses were limited to clients aged 16-32 years. This study is registered with ClinicalTrials.gov, number NCT00203749. FINDINGS The proportion of clients receiving their first HIV test during the study was higher in CBVCT communities than in SVCT communities in Tanzania (2341 [37%] of 6250 vs 579 [9%] of 6733), Zimbabwe (5437 [51%] of 10,700 vs 602 [5%] of 12,150), and Thailand (7802 [69%] of 11,290 vs 2319 [23%] 10,033). The mean difference in the proportion of clients receiving HIV testing between CBVCT and SVCT communities was 40·2% (95% CI 15·8-64·7; p=0·019) across three community pairs (one per country). HIV prevalence was higher in SVCT communities than in CBVCT communities, but CBVCT detected almost four times more HIV cases than did SVCT across the three study sites (952 vs 264; p=0·003). Repeat HIV testing in CBVCT communities increased in all sites to reach 28% of all those testing for HIV by the end of the intervention period. INTERPRETATION CBVCT should be considered as a viable intervention to increase detection of HIV infection, especially in regions with restricted access to clinic-based VCT and support services after testing. FUNDING US National Institute of Mental Health, HIV Prevention Trials Network (via US National Institute of Allergy and Infectious Diseases), and US National Institutes of Health.

Theory-Guided, Empirically Supported Avenues for Intervention on HIV Medication Nonadherence: Findings from the Healthy Living Project

OBJECTIVES Adherence to antiretroviral therapy (ART) remains a challenge in efforts to maximize HIV treatment benefits. Previous studies of antiretroviral adherence are limited by low statistical power, homogeneous samples, and biased assessment methods. Based on Social Action Theory and using a large, diverse sample of men and women living with HIV, the objectives of the current study are to clarify correlates of nonadherence to ART and to provide theory-guided, empirically supported direction for intervening on ART nonadherence. DESIGN Cross-sectional interview study utilizing a computerized interview. SETTING Recruited from clinics, agencies, and via media ads in four U.S. cities from June 2000 to January 2002. PARTICIPANTS Two thousand seven hundred and sixty-five HIV-positive adults taking ART. MAIN OUTCOME MEASURE Computer-assessed self-reported antiretroviral adherence. RESULTS Thirty-two percent reported less than 90% adherence to ART in the prior 3 days. A number of factors were related to nonadherence in univariate analysis. Multivariate analyses identified that being African American, being in a primary relationship, and a history of injection drug use or homelessness in the past year were associated with greater likelihood of nonadherence. Furthermore, adherence self-efficacy, and being able to manage side effects and fit medications into daily routines were protective against nonadherence. Being tired of taking medications was associated with poorer adherence whereas a belief that nonadherence can make the virus stronger was associated with better adherence. CONCLUSIONS Results support the need for multifocused interventions to improve medication adherence that address logistical barriers, substance use, attitudes and expectancies, as well as skills building and self-efficacy enhancement. Further exploration of issues related to adherence for African Americans and men in primary relationships is warranted.

Removing barriers to knowing HIV status: Same-day mobile HIV testing in Zimbabwe

Objectives:We developed a mobile HIV voluntary counseling testing (VCT) strategy. Our aims were (1) to describe those using the services, (2) to assess the acceptability of such services, (3) to assess reasons for not testing previously, and (4) to compare those who used the services with those who did not to determine how to increase acceptability. Methods:We provided free anonymous mobile VCT using 2 rapid HIV tests in 12 marketplaces in Epworth and Seke, Zimbabwe. Qualitative interviews were conducted to assess motivations for and barriers to testing. A subsample of HIV testers and individuals near testing vans who declined testing (nontesters) completed a questionnaire. Results:A total of 1099 individuals participated in mobile VCT between March 2002 and August 2003. The proportion of participants infected with HIV was 29.2%. Overall, 98.8% of participants elected to receive HIV test results the same day. Reasons for not testing previously were often logistic (eg, inconvenience of hours [25.6%] and location [20.7%] or cost [8%]). Those who used the same-day mobile testing services (testers vs. nontesters) perceived themselves at higher risk for HIV infection (adjusted odds ratio [AOR] = 1.8) but were less likely to have known people with HIV (AOR = 0.49) or where to get tested (AOR = 0.57). Conclusions:Same-day HIV testing in community settings seems to be acceptable in sub-Saharan Africa. Barriers to HIV testing are often logistic and can be overcome with community-based strategies. These strategies need to be refined to address the needs of those not using mobile testing services.

Longitudinal predictors of reductions in unprotected anal intercourse among gay men in San Francisco: the AIDS Behavioral Research Project.

Predictors of unprotected anal intercourse were examined among 508 gay men in San Francisco. The cohort was recruited in 1983-84 at which time 49.8 percent of non-monogamous men (N = 435) and 71.2 percent of monogamous men (N = 73) reported practicing unprotected anal intercourse. Only 12 percent of non-monogamous and 27.4 percent of monogamous men reported these practices in 1988. The non-monogamous men who practiced unprotected anal intercourse in 1984 were more likely to be younger, to report that unprotected anal intercourse was their favorite sexual activity, to be low in perceived efficacy to change sexual behavior, to report that friends were more likely to engage in high-risk behaviors, to have less knowledge of health guidelines, and to be less depressed at that time. Non-monogamous individuals who in 1984 reported that unprotected anal intercourse was their favorite sexual activity were more likely to practice that behavior in 1988. Those who knew their serostatus as positive were less likely to report unprotected anal intercourse in 1988. These data infer that in order to modify AIDS-related high-risk behaviors, community risk-reduction programs be differentially aimed at young persons so as to increase personal efficacy about risk reduction, challenge peer norms, promote antibody testing, and eroticize safer sexual activities.

HIV transmission risk behavior among men and women living with HIV in 4 cities in the United States.

Summary:Determining rates of HIV transmission risk behavior among HIV-positive individuals is a public health priority, especially as infected persons live longer because of improved medical treatments. Few studies have assessed the potential for transmission to the partners of HIV-positive persons who engage in high-risk activities. A total of 3723 HIV-infected persons (1918 men who have sex with men [MSM], 978 women, and 827 heterosexual men) were interviewed in clinics and community-based agencies in Los Angeles, Milwaukee, New York City, and San Francisco from June 2000 to January 2002 regarding sexual and drug use behaviors that confer risk for transmitting HIV. Less than one quarter of women and heterosexual men had 2 or more sexual partners, whereas 59% of MSM reported having multiple partners. Most unprotected vaginal and anal sexual activity took place in the context of relationships with other HIV-positive individuals. Approximately 19% of women, 15.6% of MSM, and 13.1% of heterosexual men engaged in unprotected vaginal or anal intercourse with partners who were HIV-negative or whose serostatus was unknown. The majority of sexually active participants disclosed their serostatus to all partners with whom they engaged in unprotected intercourse. An estimated 30.4 new infections (79.7% as a result of sexual interactions with MSM) would be expected among the sex partners of study participants during the 3-month reporting period. Eighteen percent of 304 participants who injected drugs in the past 3 months reported lending their used injection equipment to others. In addition to the more traditional approaches of HIV test counseling and of focusing on persons not infected, intensive prevention programs for persons with HIV infection are needed to stem the future spread of the virus.

Project Accept (HPTN 043): a community-based intervention to reduce HIV incidence in populations at risk for HIV in sub-Saharan Africa and Thailand.

Background:Changing community norms to increase awareness of HIV status and reduce HIV-related stigma has the potential to reduce the incidence of HIV-1 infection in the developing world. Methods:We developed and implemented a multilevel intervention providing community-based HIV mobile voluntary counseling and testing, community mobilization, and posttest support services. Forty-eight communities in Tanzania, Zimbabwe, South Africa, and Thailand were randomized to receive the intervention or clinic-based standard voluntary counseling and testing (VCT), the comparison condition. We monitored utilization of community-based HIV mobile voluntary counseling and testing and clinic-based standard VCT by community of residence at 3 sites, which was used to assess differential uptake. We also developed quality assurance procedures to evaluate staff fidelity to the intervention. Findings:In the first year of the study, a 4-fold increase in testing was observed in the intervention versus comparison communities. We also found an overall 95% adherence to intervention components. Study outcomes, including prevalence of recent HIV infection and community-level HIV stigma, will be assessed after 3 years of intervention. Conclusions:The provision of mobile services, combined with appropriate support activities, may have significant effects on utilization of voluntary counseling and testing. These findings also provide early support for community mobilization as a strategy for increasing testing rates.

Effects of a behavioral intervention to reduce risk of transmission among people living with HIV: The Healthy Living Project randomized controlled study

Context:The US Centers for Disease Control and Prevention (CDC) strongly recommend comprehensive risk counceling and services for people living with HIV (PLH); yet, there are no evidence-based counseling protocols. Objective:To examine the effect of a 15-session, individually delivered, cognitive behavioral intervention on a diverse sample of PLH at risk of transmitting to others. Design:This was a multisite, 2-group, randomized, controlled trial. Participants:Nine hundred thirty-six HIV-infected participants considered to be at risk of transmitting HIV of 3818 persons screened were randomized into the trial. Participants were recruited in Los Angeles, Milwaukee, New York, and San Francisco. Intervention:Fifteen 90-minute individually delivered intervention sessions were divided into 3 modules: stress, coping, and adjustment; safer behaviors; and health behaviors. The control group received no intervention until the trial was completed. Both groups completed follow-up assessments at 5, 10, 15, 20, and 25 months after randomization. Main Outcome Measure:Transmission risk, as measured by the number of unprotected sexual risk acts with persons of HIV-negative or unknown status, was the main outcome measure. Results:Overall, a significance difference in mean transmission risk acts was shown between the intervention and control arms over 5 to 25 months (χ2 = 16.0, degrees of freedom = 5; P = 0.007). The greatest reduction occurred at the 20-month follow-up, with a 36% reduction in the intervention group compared with the control group. Conclusion:Cognitive behavioral intervention programs can effectively reduce the potential of HIV transmission to others among PLH who report significant transmission risk behavior.

Effect of race and/or ethnicity in use of antiretrovirals and prophylaxis for opportunistic infection: a review of the literature.

Objective. The authors performed a systematic and critical review of published studies investigating potential associations between race and/or ethnicity and use of HIV-related medications, including antiretroviral medications and medications used for prophylaxis of opportunistic infections. Methods. The authors conducted a Web-based search of the University of California MEDLINE/HealthSTAR database for articles published from January 1, 1985, to October 31, 2001. References cited in articles were used to identify potential additional articles for this review. The authors reviewed articles published in peer-reviewed scientific journals that analyzed race/ethnicity as a predictor of antiretroviral or HIV-related prophylactic medication use. Results. The authors identified 28 reports, including: (a) 26 studies published in 1991–2001 that addressed antiretroviral use, spanning data collection periods from 1984 to 1999; (b) 11 studies published in 1994–2001 that addressed prophylaxis for Pneumocystis carinii pneumonia (PCP), reporting on data collected from 1989 to 1998; and (c) three studies published from 1998 to 2001 that addressed prophylaxis for other opportunistic infections, reporting on data collected from 1993 to 1998. Among the studies that addressed antiretroviral use, 14 found a negative association between non-white race and at least one measure of antiretroviral use, three studies found a positive association, and 16 studies found no association; seven studies found mixed results across several measures of antiretroviral use. Only four of 11 studies found a negative association between race/ethnicity and PCP prophylaxis; the remainder found no association. Two out of three studies found a negative association between race/ethnicity and prophylaxis for other infections. Conclusions. There is evidence of racial/ethnic disparities in utilization of antiretrovirals, which are known to be strongly associated with positive HIV health outcomes. It is now imperative for researchers and policy makers to better understand the causes of these disparities, evaluate programs that affect the delivery of HIV medications, and implement program and policy changes necessary to address the disparities.

Changes in condom use among homosexual men in San Francisco.

Employed data from two longitudinal surveys of gay men in San Francisco (a) to examine for cohort (Study 1) and attrition (Studies 1 and 2) bias effects on reported changes in condom use by gay men and (b) to investigate predictors of condom use (Study 2). Substantial increases in condom use were observed, and these changes were unrelated to attrition and cohort bias. In terms of predictors of condom use, men who always used condoms had higher levels of social support from informal sources of help, had more positive expectations that condoms would have positive interpersonal and personal consequences, and were more likely to be HIV positive than men who used condoms occasionally or never. The results are discussed in terms of their implications for HIV-prevention research.

Intricacies and inter-relationships between HIV disclosure and HAART: A qualitative study

This study aimed to understand whether and how highly active antiretroviral treatment (HAART) affects views and patterns of disclosure and how disclosure interacts with treatment decisions. One hundred and fifty-two HIV-positive adults (52 MSM, 56 women and 44 IDU men) from four US cities participated in two to three-hour, semi-structured interviews in 1998–99. Results indicate that HAART interacts with and shapes HIV disclosure issues in several ways. Medications may ‘out’ people living with HIV. Thus, in different settings (e.g. work, prisons, drug rehabs and public situations), some try to hide medications or modify dosing schedules, which can contribute to non-adherence, and affect sexual behaviours. Disclosure of HIV and/or HAART may also result in antagonism from others who hold negative attitudes and beliefs about HAART, potentially impeding adherence. Observable side effects of medications can also ‘out’ individuals. Conversely, medications may improve appearance, delaying or impeding disclosure. Some wait until they are on HAART and look ‘well’ before disclosing; some who look healthy as a result of medication deny being HIV-positive. Alternatively, HIV disclosure can lead to support that facilitates initiation of, and adherence to, treatment. HIV disclosure and adherence can shape one another in critical ways. Yet these interactions have been under-studied and need to be further examined. Interventions and studies concerning each of these domains have generally been separate, but need to be integrated, and the importance of relationships between these two areas needs to be recognized.