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Gill N, Banta JE, Gashugi L, Young SD. Analysis of Participant Stigma and Associated Costs of a Peer-Led Social Media HIV Intervention. AIDS EDUCATION AND PREVENTION : OFFICIAL PUBLICATION OF THE INTERNATIONAL SOCIETY FOR AIDS EDUCATION 2024; 36:113-128. [PMID: 38648178 DOI: 10.1521/aeap.2024.36.2.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
HIV-related stigma is a primary barrier to seeking HIV care. Online social media interventions utilizing peer-led approaches provide an opportunity to revolutionize HIV health behavior change. Secondary analysis of the UCLA HOPE Study (6 waves) was done to examine the effectiveness of an online peer-led intervention in reducing HIV-related internalized stigma (IS), association between IS and sexual risk behaviors (SRB), and associated costs for changing the likelihood of HIV testing. Among 897 participants, an inverse relationship between IS (Discomfort with people with HIV, Stereotypes, Moral Judgment) and SRB (Number of Sexual Partners, Sexual Encounters) factors was identified over time (p < .05). Engagement in stigma conversations increased participant likelihood to request HIV tests (B = 0.02, Wald = 8.10, p = .004) when made in group versus one-on-one contact. Innovative technology has potential to improve HIV-care efforts through expanded reach to at-risk populations, improved communication maintenance, ease of accessibility, and user anonymity.
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Affiliation(s)
- Navkiranjit Gill
- School of Public Health, Loma Linda University, Loma Linda, California
| | - Jim E Banta
- School of Public Health, Loma Linda University, Loma Linda, California
| | - Leonard Gashugi
- School of Public Health, Loma Linda University, Loma Linda, California
| | - Sean D Young
- Department of Emergency Medicine and with the Department of Informatics, University of California, Irvine, Irvine, California
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2
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Orser L, O'Byrne P. Public health counselling following an HIV diagnosis among men who have sex with men: tensions between individual needs and health protection mandates. J Res Nurs 2022; 26:207-226. [PMID: 35251244 DOI: 10.1177/1744987120932961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background In Ontario, provincial regulations stipulate that public health units must complete post-test counselling with all persons newly diagnosed with human immunodeficiency virus. Public health nurses conduct this follow-up and are responsible for ensuring appropriate surveillance and management of human immunodeficiency virus with the primary objective of reducing ongoing human immunodeficiency virus transmission in their health jurisdiction. To date, little research has explored the effectiveness of this mandatory public health counselling from the perspective of patients - the majority of whom are men who have sex with men. Aims To address gaps in public health nursing practice, a pilot study was conducted with men who have sex with men in Ottawa to explore their attitudes and experiences of receiving mandatory human immunodeficiency virus follow-up after their diagnosis. Methods Qualitative interviews were conducted and interpreted using thematic analysis. Results This analysis revealed a contrariety between the needs of individuals and of public health units, with patients' perceiving their personal wishes to be secondary to public health mandates - and led patients to simultaneously want to evade, and be assisted by, public health nurses. Conclusions Public health units and nurses should consider adopting a more patient-centered approach to HIV case management, which incorporates patients' experiences of receiving an HIV diagnosis.
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Affiliation(s)
- Lauren Orser
- Doctoral student, University of Ottawa, School of Nursing Ottawa, Canada
| | - Patrick O'Byrne
- Professor, University of Ottawa, School of Nursing Ottawa, Canada
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3
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Kutner BA, Simoni JM, Aunon FM, Creegan E, Balán IC. How Stigma Toward Anal Sexuality Promotes Concealment and Impedes Health-Seeking Behavior in the U.S. Among Cisgender Men Who Have Sex with Men. ARCHIVES OF SEXUAL BEHAVIOR 2021; 50:1651-1663. [PMID: 32020349 PMCID: PMC7398831 DOI: 10.1007/s10508-019-01595-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 11/12/2019] [Accepted: 11/25/2019] [Indexed: 05/23/2023]
Abstract
Gay, bisexual, and other men who have sex with men (MSM) experience alarming HIV disparities alongside sub-optimal engagement in HIV interventions. Among MSM, stigma toward anal sexuality could interfere with engagement in HIV prevention, yet few studies have examined MSM perspectives on anal sex stigma or its health-related sequelae. Guided by theory, we aimed to characterize anal sex stigma, related sexual concerns, and barriers to health seeking, like concealment. We elicited community input by purposively interviewing 10 experts in MSM health and then 25 racially, ethnically, and geographically diverse cisgender MSM. Participants reported experienced, internalized, and anticipated forms of anal sex stigma that inhibited health seeking. Experienced stigma, including direct and observed experiences as well as the absence of sex education and information, contributed to internalized stigma and anticipation of future devaluation. This process produced psychological discomfort and concealment of health-related aspects of anal sexuality, even from potentially supportive sexual partners, social contacts, and health workers. Participants characterized stigma and discomfort with disclosure as normative, pervasive, and detrimental influences on health-seeking behavior both during sex and within healthcare interactions. Omission of information appears to be a particularly salient determinant of sexual behavior, inhibiting prevention of harm, like pain, and leading to adverse health outcomes. The development of measures of anal sex stigma and related sexual concerns, and testing their impact on comfort with disclosure, sexual practices, and engagement in health services could identify modifiable social pathways that contribute to health disparities among MSM, like those seen in the HIV epidemic.
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Affiliation(s)
- Bryan A Kutner
- The HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute, Columbia University, 1051 Riverside Drive, Unit 15, New York, NY, 10032, USA.
| | - Jane M Simoni
- Department of Psychology, University of Washington, Seattle, WA, USA
| | - Frances M Aunon
- Department of Psychology, University of Washington, Seattle, WA, USA
| | - Emma Creegan
- School of Public Health, Brown University, Providence, RI, USA
| | - Ivan C Balán
- The HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute, Columbia University, 1051 Riverside Drive, Unit 15, New York, NY, 10032, USA
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Bonnevie E, Kigozi G, Kairania R, Ssemanda JB, Nakyanjo N, Ddaaki WG, Ssekyewa C, Wagman JA. Alcohol use in fishing communities and men's willingness to participate in an alcohol, violence and HIV risk reduction intervention: qualitative findings from Rakai, Uganda. CULTURE, HEALTH & SEXUALITY 2020; 22:275-291. [PMID: 30957702 DOI: 10.1080/13691058.2019.1587002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Alcohol use, intimate partner violence (IPV) and HIV infection are associated, but few programmes and interventions have addressed their synergistic relationship or been evaluated for effectiveness and acceptability. This is a critical gap in populations with high rates of alcohol use, HIV and IPV, such as Uganda's fishing communities. This study examined drinking norms, barriers and facilitators to engagement in a risk reduction programme, and ideas for tailoring. Results showed that alcohol use is common in fishing villages. While men and women drink, gendered notions of femininity deem alcohol largely unacceptable for women. Plastic sachets of liquor were the most common alcoholic drink. Participants did not understand the definition of 'hazardous drinking', but recognised connections between drinking, violence and sexual risk-taking. The idea of an alcohol, IPV and HIV risk reduction intervention was supported, but barriers need to be addressed, including how best to help those uninterested in reducing their drinking, addressing normalisation of drinking and how best to inform those who truly need intervention. Intervention to people living with HIV around the time of diagnosis and treatment may be warranted. Study findings highlight the potential to integrate alcohol and IPV reduction programmes into an HIV service provision.
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Affiliation(s)
- Erika Bonnevie
- Center on Gender Equity and Health, University of California San Diego, San Diego, CA, USA
| | | | | | | | | | | | | | - Jennifer A Wagman
- Center on Gender Equity and Health, University of California San Diego, San Diego, CA, USA
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Martin TCS, Chaillon A, Graves SK, Lin T, Gianella S, Smith DM, Little SJ, Hoenigl M. Genetic Network Analysis to Assess the Risk of Human Immunodeficiency Virus Transmission Among Men Who Have Sex With Men Seeking Partners on the Internet. Clin Infect Dis 2020; 70:925-932. [PMID: 30953067 PMCID: PMC7319271 DOI: 10.1093/cid/ciz278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 04/01/2019] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Online partner seeking (OPS) among men who have sex with men (MSM) is associated with increased risk behavior including frequency of unprotected anal intercourse, number of partners, and incidence of sexually transmitted infections (STIs). However, the impact on transmission of human immunodeficiency virus (HIV) is uncertain. METHODS MSM diagnosed with acute and early HIV infection were recruited from the Primary Infection Resource Consortium. HIV transmission events in the year following infection were inferred using estimated date of infection combined with genetic network analysis with linked sequences defined as ≤0.015 sequences/site difference in the HIV type 1 (HIV-1) pol coding region. Participants completed a detailed baseline questionnaire including reported methods of meeting sexual partners, including OPS, in the prior 3 months, and regression was performed with inferred transmission as the outcome. RESULTS From 147 MSM who completed the questionnaire, there were an associated 20 inferred HIV transmissions. No association with OPS was found (odds ratio, 0.64 [95% confidence interval, .24-1.69]; P = .37), though individuals who reported OPS were more likely to have reported a greater number of partners (P = .003) and prior STIs (P = .002). Geospatial analysis did not indicate that OPS was associated with increased geographical reach of the user (P = .68). CONCLUSIONS Individuals reporting OPS did not have increased odds of inferred HIV-1 transmission in the year following infection using genetic linkage analysis despite apparently increased risk behavior. OPS also did not increase the geographic distance between genetically clustered HIV infections, suggesting that individuals mainly use the internet to meet partners in their local region.
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Affiliation(s)
- Thomas C S Martin
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Antoine Chaillon
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Susannah K Graves
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Timothy Lin
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Sara Gianella
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Davey M Smith
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
- San Diego Veterans Affairs Health System, California
| | - Susan J Little
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
| | - Martin Hoenigl
- Division of Infectious Diseases and Global Public Health, University of California, San Diego, California
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Starks PT, Kelsey MMG, Rosania D, Getz WM. Does HIV infection increase male sexual behavior? Evol Med Public Health 2020; 2020:174-180. [PMID: 33072327 PMCID: PMC7549411 DOI: 10.1093/emph/eoaa030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/23/2020] [Indexed: 11/13/2022] Open
Abstract
Abstract
After 40 years of intense study on HIV/AIDS, scientists have identified, among other things, at risk populations, stages of disease progression and treatment strategies. What has received less attention is the possibility that infection might elicit an increase in sexual behavior in humans. In 2000, Starks and colleagues speculated that HIV infection could alter host behavior in a manner that facilitated the spread of the virus. Retrospective and self-report data from five studies now support this hypothesis. Individuals with acute—versus nonacute—stage infections report more sexual partners and more frequent risky sex. Additionally, male sexual behavior increases nonlinearly with HIV viral load, and data suggest a potential threshold viral level above which individuals are more likely to engage in risky sexual behavior. Taken together, these data suggest that HIV infection influences male sexual behavior in a manner beneficial to the virus. Here, we present these findings, highlight their limitations and discuss alternative perspectives. We argue for increased testing of this hypothesis and advocate for increased public health measures to mitigate the putative impact on male sexual behavior.
Lay Summary In 2000, Starks and colleagues speculated that HIV infection could alter host behavior in a manner that facilitated the spread of the virus. Retrospective and self-report data from five studies now support this hypothesis. We argue for increased testing of this hypothesis and advocate for increased public health measures to mitigate the putative impact on male sexual behavior.
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Affiliation(s)
- Philip T Starks
- Department of Biology, Tufts University, Medford, MA 02155, USA
| | | | - David Rosania
- Department of Biology, Tufts University, Medford, MA 02155, USA
- PO Box 93, Rye Beach, NH 03871, USA
| | - Wayne M Getz
- University of California at Berkeley, Berkeley, CA 94720-3112, USA
- School of Mathematical Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa
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7
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Lin TC, Gianella S, Tenenbaum T, Little SJ, Hoenigl M. A Simple Symptom Score for Acute Human Immunodeficiency Virus Infection in a San Diego Community-Based Screening Program. Clin Infect Dis 2019; 67:105-111. [PMID: 29293891 DOI: 10.1093/cid/cix1130] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 12/23/2017] [Indexed: 12/15/2022] Open
Abstract
Background Treatment of acute human immunodeficiency virus (HIV) infection (AHI) decreases transmission and preserves immune function, but AHI diagnosis remains resource intensive. Risk-based scores predictive for AHI have been described for high-risk groups; however, symptom-based scores could be more generalizable across populations. Methods Adults who tested either positive for AHI (antibody-negative, HIV nucleic acid test [NAT] positive) or HIV NAT negative with the community-based San Diego Early Test HIV screening program were retrospectively randomized 2:1 into a derivation and validation set. In the former, symptoms significant for AHI in a multivariate logistic regression model were assigned a score value (the odds ratio [OR] rounded to the nearest integer). The score was assessed in the validation set using receiver operating characteristics and areas under the curve (AUC). An optimal cutoff score was found using the Youden index. Results Of 998 participants (including 261 non-men who have sex with men [MSM]), 113 had AHI (including 4 non-MSM). Compared to HIV-negative cases, AHI cases reported more symptoms (median, 4 vs 0; P < .01). Fever, myalgia, and weight loss were significantly associated with AHI in the multivariate model and corresponded to 11, 8, and 4 score points, respectively. The summed score yielded an AUC of 0.85 (95% confidence interval [CI], .77-.93). A score of ≥11 was 72% sensitive and 96% specific (diagnostic OR, 70.27). Conclusions A 3-symptom score accurately predicted AHI in a community-based screening program and may inform allocation of resources in settings that do not routinely screen for AHI.
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Affiliation(s)
- Timothy C Lin
- University of California, San Diego School of Medicine, La Jolla
| | - Sara Gianella
- Division of Infectious Diseases, Department of Medicine, University of California, San Diego
| | - Tara Tenenbaum
- Division of Infectious Diseases, Department of Medicine, University of California, San Diego
| | - Susan J Little
- Division of Infectious Diseases, Department of Medicine, University of California, San Diego
| | - Martin Hoenigl
- Division of Infectious Diseases, Department of Medicine, University of California, San Diego.,Section of Infectious Diseases, Department of Internal Medicine, Medical University of Graz, Austria.,Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria
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Khanna AS, Schneider JA, Collier N, Ozik J, Issema R, di Paola A, Skwara A, Ramachandran A, Webb J, Brewer R, Cunningham W, Hilliard C, Ramani S, Fujimoto K, Harawa N. A modeling framework to inform preexposure prophylaxis initiation and retention scale-up in the context of 'Getting to Zero' initiatives. AIDS 2019; 33:1911-1922. [PMID: 31490212 PMCID: PMC6760326 DOI: 10.1097/qad.0000000000002290] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE(S) 'Getting to Zero' (GTZ) initiatives aim to eliminate new HIV infections over a projected time frame. Increased preexposure prophylaxis (PrEP) uptake among populations with the highest HIV incidence, such as young Black MSM, is necessary to accomplish this aim. Agent-based network models (ABNMs) can help guide policymakers on strategies to increase PrEP uptake. DESIGN Effective PrEP implementation requires a model that incorporates the dynamics of interventions and dynamic feedbacks across multiple levels including virus, host, behavior, networks, and population. ABNMs are a powerful tool to incorporate these processes. METHODS An ABNM, designed for and parameterized using data for young Black MSM in Illinois, was used to compare the impact of PrEP initiation and retention interventions on HIV incidence after 10 years, consistent with GTZ timelines. Initiation interventions selected individuals in serodiscordant partnerships, or in critical sexual network positions, and compared with a controlled setting where PrEP initiators were randomly selected. Retention interventions increased the mean duration of PrEP use. A combination intervention modeled concurrent increases in PrEP initiation and retention. RESULTS Selecting HIV-negative individuals for PrEP initiation in serodiscordant partnerships resulted in the largest HIV incidence declines, relative to other interventions. For a given PrEP uptake level, distributing effort between increasing PrEP initiation and retention in combination was approximately as effective as increasing only one exclusively. CONCLUSION Simulation results indicate that expanded PrEP interventions alone may not accomplish GTZ goals within a decade, and integrated scale-up of PrEP, antiretroviral therapy, and other interventions might be necessary.
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Affiliation(s)
| | | | - Nicholson Collier
- Consortium for Advanced Science and Engineering, The University of Chicago, Chicago, Illinois
| | - Jonathan Ozik
- Consortium for Advanced Science and Engineering, The University of Chicago, Chicago, Illinois
| | - Rodal Issema
- Chicago Center for HIV Elimination
- Department of Medicine
| | - Angela di Paola
- Center for Health Promotion and Prevention Research, The University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
| | - Abigail Skwara
- Chicago Center for HIV Elimination
- Department of Medicine
| | | | - Jeannette Webb
- Chicago Center for HIV Elimination
- Department of Medicine
| | - Russell Brewer
- Chicago Center for HIV Elimination
- Department of Medicine
| | - William Cunningham
- Department of Health Policy and Management, University of California, Los Angeles
| | - Charles Hilliard
- Department of Psychiatry and Human Behavior, Charles R. Drew University
| | | | - Kayo Fujimoto
- Center for Health Promotion and Prevention Research, The University of Texas Health Science Center at Houston (UTHealth), Houston, Texas
| | - Nina Harawa
- Department of Psychiatry and Human Behavior, Charles R. Drew University
- Department of Epidemiology, University of California, Los Angeles, Los Angeles, California, USA
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Evaluation of the Predictive Potential of the Short Acute Retroviral Syndrome Severity Score for HIV-1 Disease Progression in Individuals With Acute HIV Infection. J Acquir Immune Defic Syndr 2018; 74:e114-e117. [PMID: 28225720 DOI: 10.1097/qai.0000000000001263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Care continuum entry interventions: seek and test strategies to engage persons most impacted by HIV within the United States. AIDS 2018; 32:407-417. [PMID: 29381558 DOI: 10.1097/qad.0000000000001733] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
: The current review re-conceptualizes seek and test strategies, particularly given the changing importance of HIV testing as care continuum entry for persons irrespective of their HIV status. Care continuum entry advances previous seek and test strategies for client engagement with two next-generation functions: use of testing to engage (or re-engage) HIV negative clients in preexposure prophylaxis (PrEP) care; and testing individuals who may already be known positives for care continuum re-entry. We review existing seek and test strategies for most impacted community members with a goal of optimizing care continuum entry as we move towards HIV transmission elimination. These strategies are context, sub-group, community and epidemic-specific. This review is timely, given the initiation of routine PrEP care, which shifts and broadens our conceptualization of care continuum entry triggered by the HIV testing event. In addition, as the epidemic becomes more concentrated, focusing on re-engagement of HIV-infected persons becomes increasingly important given that transmission events involve both those acutely and newly infected as well as the large numbers who may not be virally suppressed. We start with examination of routine testing in healthcare settings, emphasizing its potential role in re-engagement for persons out of care. Subsequently, we describe risk-based testing to identify key populations. We then review network-based approaches and their impact on the epidemic. We close with future directions for individual and combination care continuum entry strategies most relevant to elimination of HIV transmission in the United States.
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11
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Liu Y, Vermund SH, Ruan Y, Liu H, Rivet Amico K, Simoni JM, Shepherd BE, Shao Y, Qian H. Peer counselling versus standard-of-care on reducing high-risk behaviours among newly diagnosed HIV-positive men who have sex with men in Beijing, China: a randomized intervention study. J Int AIDS Soc 2018; 21:e25079. [PMID: 29430845 PMCID: PMC5808102 DOI: 10.1002/jia2.25079] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 01/29/2018] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION Reducing high-risk behaviours (i.e. multiple partnership, condomless anal/vaginal sex, alcohol use before sex, illicit drug use) after HIV diagnosis is critical for curtailing HIV transmission. We designed an intervention to explore peer- counselling in reducing high-risk behaviours among newly diagnosed HIV-positive Chinese men who have sex with men (MSM). METHODS We randomized 367 newly diagnosed HIV-positive men to either standard-of-care (SOC; n = 183) or peer-counselling intervention (n = 184), and followed them for 12 months (visit at 0-, 3-, 6-, 9- and 12-month). SOC participants received counselling on high-risk behaviour reduction by clinic staff. Intervention participants received both SOC and peer counselling. A generalized estimating equation was used to compare pre-post diagnosis high-risk behaviour change; logistic regression was used to assess the likelihood of practicing high-risk behaviours between intervention and SOC participants. Both intent-to-treat and per-protocol (full-dosage) approaches were used for the analyses. RESULTS For pre- and post-diagnosis comparisons, multiple partnership fell from 50% to 16% (p < 0.001), alcohol use before sex from 23% to 9% (p = 0.001), illicit drug use from 33% to 6% (p < 0.001), condomless anal sex from 47% to 4% (insertive from 23% to 2%; receptive from 36% to 3%; p < 0.001). In the intent-to-treat analysis accounting for repeated measures, peer counselling was more likely to reduce insertive anal sex (AOR = 0.65; 95% CI: 0.45 to 0.94), condomless anal sex (AOR = 0.27; 95% CI: 0.10 to 0.64) and illicit drug use (AOR = 0.32; 95% CI: 0.16 to 0.64). In the per-protocol analysis, peer counselling was associated with a lower likelihood of using illicit drug (OR = 0.23; 95% CI: 0.07 to 0.81) and having condomless vaginal sex with women (OR = 0.12; 95% CI: 0.07 to 0.98). CONCLUSIONS We observed a 14 to 43% decrease in the prevalence of selected high-risk behaviours after HIV diagnosis. Peer counselling had a greater impact in reducing condomless anal sex with men, illicit drug use and condomless vaginal sex with women over time. Future studies with exclusive peer-counselling arm are necessary to test its efficacy and effectiveness among Chinese MSM. Clinical Trial Number: NCT01904877.
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Affiliation(s)
- Yu Liu
- Department of Public Health SciencesUniversity of Rochester School of Medicine and DentistryRochesterNYUSA
| | | | - Yuhua Ruan
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID)Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesChinese Center for Disease Control and PreventionBeijingChina
| | - Hongjie Liu
- Department of Epidemiology and BiostatisticsSchool of Public HealthUniversity of MarylandCollege ParkMDUSA
| | - K Rivet Amico
- Department of Health Behavior and Health EducationUniversity of MichiganAnn ArborMIUSA
| | - Jane M Simoni
- Department of PsychologyUniversity of Washington SeattleSeattleWAUSA
| | - Bryan E Shepherd
- Department of BiostatisticsVanderbilt University School of MedicineNashvilleTNUSA
| | - Yiming Shao
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID)Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesChinese Center for Disease Control and PreventionBeijingChina
| | - Han‐Zhu Qian
- School of Public HealthYale UniversityNew HavenCTUSA
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12
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Network dynamics of HIV risk and prevention in a population-based cohort of young Black men who have sex with men. ACTA ACUST UNITED AC 2017. [DOI: 10.1017/nws.2016.27] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AbstractCritical to the development of improved HIV elimination efforts is a greater understanding of how social networks and their dynamics are related to HIV risk and prevention. In this paper, we examine network stability of confidant and sexual networks among young black men who have sex with men (YBMSM). We use data from uConnect (2013–2016), a population-based, longitudinal cohort study. We use an innovative approach to measure both sexual and confidant network stability at three time points, and examine the relationship between each type of stability and HIV risk and prevention behaviors. This approach is consistent with a co-evolutionary perspective in which behavior is not only affected by static properties of an individual's network, but may also be associated with changes in the topology of his or her egocentric network. Our results indicate that although confidant and sexual network stability are moderately correlated, their dynamics are distinct with different predictors and differing associations with behavior. Both types of stability are associated with lower rates of risk behaviors, and both are reduced among those who have spent time in jail. Public health awareness and engagement with both types of networks may provide new opportunities for HIV prevention interventions.
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13
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McCree DH, Johnson W, Baytop C, Royal S. Risk Behaviors and Testing History of African American MSM: Implications for Prevention. J Natl Med Assoc 2016; 108:220-224. [PMID: 27979007 DOI: 10.1016/j.jnma.2016.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/16/2016] [Accepted: 08/08/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Knowledge of HIV status is an important step in prevention efforts especially for at risk populations like MSM. CDC recommends that MSM be tested at least annually. There is a limited information on the demographics and risk behaviors of MSM who never tested or test infrequently. This study examined the demographic characteristics, risk behaviors, and HIV status of African American MSM who reported never previously testing for HIV, testing > 12 months prior, or testing within the last 12 months from a testing evaluation study in Washington, D.C. METHODS Eligibility requirements were: 18-64 years old; Black/African American; biologically male; and self-reported oral and/or anal sex with a man in the past six months. Descriptive statistics and logistic regression analyses were used. RESULTS Men who never tested had greater odds of being 25-34 years old, identifying as bisexual or heterosexual and reporting condomless sex with female and male partners. In the multivariate model, men who never tested or tested > 12 months prior to the study had a greater likelihood of having a BS degree, and being age 35 or over. Being newly identified as HIV-positive was associated with never testing and testing > 12 months prior, but was significant in the multivariate model only for never testing. CONCLUSION Results suggest prevention strategies should target risk behaviors rather than orientation and engage older men. Future studies should identify factors associated with risky sexual behaviors for men who never test or test infrequently in order to inform prevention interventions.
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Affiliation(s)
- Donna Hubbard McCree
- Centers for Disease Control and Prevention, 1600 Clifton Road NE MS D-21, Atlanta, GA 30329, USA.
| | - Wayne Johnson
- Centers for Disease Control and Prevention, 1600 Clifton Road NE MS D-21, Atlanta, GA 30329, USA
| | - Chanza Baytop
- Abt Associates, 4550 Montgomery Avenue, 8th Floor, Bethesda, MD 20866, USA
| | - Scott Royal
- Abt Associates, 4550 Montgomery Avenue, 8th Floor, Bethesda, MD 20866, USA
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14
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Rapid HIV Viral Load Suppression in those Initiating Antiretroviral Therapy at First Visit after HIV Diagnosis. Sci Rep 2016; 6:32947. [PMID: 27597312 PMCID: PMC5011704 DOI: 10.1038/srep32947] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/18/2016] [Indexed: 01/01/2023] Open
Abstract
Expert guidelines for antiretroviral therapy (ART) now recommend ART as soon as possible in all HIV infected persons to reduce the risk of disease progression and prevent transmission. The goal of this observational study was to evaluate the impact of very early ART initiation and regimen type on time to viral suppression. We evaluated time to viral suppression among 86 persons with newly-diagnosed HIV infection who initiated ART within 30 days of diagnosis. A total of 36 (42%) had acute, 27 (31%) early, and 23 (27%) had established HIV infection. The median time from an offer of immediate ART to starting ART was 8 days. A total of 56/86 (65%) initiated an integrase inhibitor-based regimen and 30/86 (35%) a protease inhibitor-based regimen. The time to viral suppression was significantly shorter in those receiving an integrase inhibitor- versus a protease inhibitor-based regimen (p = 0.022). Twenty-two (26%) initiated ART at their HIV care intake visit and 79% of these participants achieved viral suppression at week 12, 82% at week 24 and 88% at week 48. ART initiated at the intake visit led to rapid and reliable viral suppression in acute, early and chronic HIV infection, in particular when integrase inhibitor-based regimens were used.
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Hoenigl M, Little SJ. How can we detect HIV during the acute or primary stage of infection? Expert Rev Mol Diagn 2016; 16:1049-1051. [PMID: 27541993 DOI: 10.1080/14737159.2016.1226805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Martin Hoenigl
- a Division of Infectious Diseases , University of California San Diego (UCSD) , San Diego , CA , USA.,b Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine , Medical University of Graz , Graz , Austria.,c Division of Pulmonology, Department of Internal Medicine , Medical University of Graz , Graz , Austria
| | - Susan J Little
- a Division of Infectious Diseases , University of California San Diego (UCSD) , San Diego , CA , USA
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16
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Abstract
Effective HIV prevention requires knowledge of the structure and dynamics of the social networks across which infections are transmitted. These networks most commonly comprise chains of sexual relationships, but in some populations, sharing of contaminated needles is also an important, or even the main mechanism that connects people in the network. Whereas network data have long been collected during survey interviews, new data sources have become increasingly common in recent years, because of advances in molecular biology and the use of partner notification services in HIV prevention and treatment programmes. We review current and emerging methods for collecting HIV-related network data, as well as modelling frameworks commonly used to infer network parameters and map potential HIV transmission pathways within the network. We discuss the relative strengths and weaknesses of existing methods and models, and we propose a research agenda for advancing network analysis in HIV epidemiology. We make the case for a combination approach that integrates multiple data sources into a coherent statistical framework.
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Hoenigl M, Chaillon A, Mehta SR, Smith DM, Graff-Zivin J, Little SJ. Screening for acute HIV infection in community-based settings: Cost-effectiveness and impact on transmissions. J Infect 2016; 73:476-484. [PMID: 27521468 DOI: 10.1016/j.jinf.2016.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 07/30/2016] [Accepted: 07/30/2016] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To determine cost-effectiveness of three community-based acute HIV infection (AHI) testing algorithms compared to HIV antibody testing alone by focusing on the potential of averting new infections occurring within a one-year time horizon among men who have sex with men (MSM). METHODS Data sources for model parameters included actual cost and prevalence data derived from a community-based AHI screening program in San Diego, and published studies. Main outcome measure was costs per infection averted (IA). The lower end of the cost range of discounted lifetime costs of an HIV infection (i.e. $236,948) was used for defining cost-effectiveness. RESULTS The most sensitive algorithm for AHI detection, which was based on HIV nucleic acid amplification testing, was estimated to prevent between 5 and 45 transmissions, with simulated costs per infection averted between $965 and $141,256 when compared to HIV antibody testing alone. CONCLUSION AHI testing was cost-effective in preventing new HIV infections among at risk MSM in San Diego, and also among other MSM populations with similar HIV prevalence but lower proportions of AHI diagnoses. These results indicate that community-based AHI testing among MSM in the United States can pay for itself over the long run.
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Affiliation(s)
- Martin Hoenigl
- Division of Infectious Diseases, University of California San Diego (UCSD), 220 Dickinson Street, Suite A, San Diego, CA 92103, United States; Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 20, 8036 Graz, Austria; Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036 Graz, Austria.
| | - Antoine Chaillon
- Division of Infectious Diseases, University of California San Diego (UCSD), 220 Dickinson Street, Suite A, San Diego, CA 92103, United States
| | - Sanjay R Mehta
- Division of Infectious Diseases, University of California San Diego (UCSD), 220 Dickinson Street, Suite A, San Diego, CA 92103, United States; Veterans Affairs Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92161, United States
| | - Davey M Smith
- Division of Infectious Diseases, University of California San Diego (UCSD), 220 Dickinson Street, Suite A, San Diego, CA 92103, United States; Veterans Affairs Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92161, United States
| | - Joshua Graff-Zivin
- School of International Relations and Pacific Studies, Department of Economics, UCSD, 9500 Gilman Dr. # 0520, La Jolla, CA 92093, United States
| | - Susan J Little
- Division of Infectious Diseases, University of California San Diego (UCSD), 220 Dickinson Street, Suite A, San Diego, CA 92103, United States
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Roberts ST, Khanna AS, Barnabas RV, Goodreau SM, Baeten JM, Celum C, Cassels S. Estimating the impact of universal antiretroviral therapy for HIV serodiscordant couples through home HIV testing: insights from mathematical models. J Int AIDS Soc 2016; 19:20864. [PMID: 27174911 PMCID: PMC4865806 DOI: 10.7448/ias.19.1.20864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/25/2016] [Accepted: 04/13/2016] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Antiretroviral therapy (ART) prevents HIV transmission within HIV serodiscordant couples (SDCs), but slow implementation and low uptake has limited its impact on population-level HIV incidence. Home HIV testing and counselling (HTC) campaigns could increase ART uptake among SDCs by incorporating couples' testing and ART referral. We estimated the reduction in adult HIV incidence achieved by incorporating universal ART for SDCs into home HTC campaigns in KwaZulu-Natal (KZN), South Africa, and southwestern (SW) Uganda. METHODS We constructed dynamic, stochastic, agent-based network models for each region. We compared adult HIV incidence after 10 years under three scenarios: (1) "Current Practice," (2) "Home HTC" with linkage to ART for eligible persons (CD4 <350) and (3) "ART for SDCs" regardless of CD4, delivered alongside home HTC. RESULTS ART for SDCs reduced HIV incidence by 38% versus Home HTC: from 1.12 (95% CI: 0.98-1.26) to 0.68 (0.54-0.82) cases per 100 person-years (py) in KZN, and from 0.56 (0.50-0.62) to 0.35 (0.30-0.39) cases per 100 py in SW Uganda. A quarter of incident HIV infections were averted over 10 years, and the proportion of virally suppressed HIV-positive persons increased approximately 15%. CONCLUSIONS Using home HTC to identify SDCs and deliver universal ART could avert substantially more new HIV infections than home HTC alone, with a smaller number needed to treat to prevent new HIV infections. Scale-up of home HTC will not diminish the effectiveness of targeting SDCs for treatment. Increasing rates of couples' testing, disclosure, and linkage to care is an efficient way to increase the impact of home HTC interventions on HIV incidence.
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Affiliation(s)
- Sarah T Roberts
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Aditya S Khanna
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | - Ruanne V Barnabas
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Steven M Goodreau
- Department of Anthropology, University of Washington, Seattle, WA, USA
| | - Jared M Baeten
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Connie Celum
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Susan Cassels
- Department of Geography, University of California Santa Barbara, Santa Barbara, CA, USA
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Delaney KP, Rosenberg ES, Kramer MR, Waller LA, Sullivan PS. Optimizing Human Immunodeficiency Virus Testing Interventions for Men Who Have Sex With Men in the United States: A Modeling Study. Open Forum Infect Dis 2015; 2:ofv153. [PMID: 26613096 PMCID: PMC4653969 DOI: 10.1093/ofid/ofv153] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 10/09/2015] [Indexed: 11/15/2022] Open
Abstract
Background. In the United States, public health recommendations for men who have sex with men (MSM) include testing for human immunodeficiency virus (HIV) at least annually. We model the impact of different possible HIV testing policies on HIV incidence in a simulated population parameterized to represent US MSM. Methods. We used exponential random graph models to explore, among MSM, the short-term impact on baseline (under current HIV testing practices and care linkage) HIV incidence of the following: (1) increasing frequency of testing; (2) increasing the proportion who ever test; (3) increasing test sensitivity; (4) increasing the proportion of the diagnosed population achieving viral suppression; and combinations of 1-4. We simulated each scenario 20 times and calculated the median and interquartile range of 3-year cumulative incidence of HIV infection. Results. The only intervention that reduced HIV incidence on its own was increasing the proportion of the diagnosed population achieving viral suppression; increasing frequency of testing, the proportion that ever test or test sensitivity did not appreciably reduce estimated incidence. However, in an optimal scenario in which viral suppression improved to 100%, HIV incidence could be reduced by an additional 17% compared with baseline by increasing testing frequency to every 90 days and test sensitivity to 22 days postinfection. Conclusions. Increased frequency, coverage, or sensitivity of HIV testing among MSM is unlikely to result in reduced HIV incidence unless men diagnosed through enhanced testing programs are also engaged in effective HIV care resulting in viral suppression at higher rates than currently observed.
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Affiliation(s)
| | | | | | - Lance A. Waller
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
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Hoenigl M, Graff-Zivin J, Little SJ. Costs per Diagnosis of Acute HIV Infection in Community-based Screening Strategies: A Comparative Analysis of Four Screening Algorithms. Clin Infect Dis 2015; 62:501-511. [PMID: 26508512 DOI: 10.1093/cid/civ912] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/20/2015] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND In nonhealthcare settings, widespread screening for acute human immunodeficiency virus (HIV) infection (AHI) is limited by cost and decision algorithms to better prioritize use of resources. Comparative cost analyses for available strategies are lacking. METHODS To determine cost-effectiveness of community-based testing strategies, we evaluated annual costs of 3 algorithms that detect AHI based on HIV nucleic acid amplification testing (EarlyTest algorithm) or on HIV p24 antigen (Ag) detection via Architect (Architect algorithm) or Determine (Determine algorithm) as well as 1 algorithm that relies on HIV antibody testing alone (Antibody algorithm). The cost model used data on men who have sex with men (MSM) undergoing community-based AHI screening in San Diego, California. Incremental cost-effectiveness ratios (ICERs) per diagnosis of AHI were calculated for programs with HIV prevalence rates between 0.1% and 2.9%. RESULTS Among MSM in San Diego, EarlyTest was cost-savings (ie, ICERs per AHI diagnosis less than $13.000) when compared with the 3 other algorithms. Cost analyses relative to regional HIV prevalence showed that EarlyTest was cost-effective (ie, ICERs less than $69.547) for similar populations of MSM with an HIV prevalence rate >0.4%; Architect was the second best alternative for HIV prevalence rates >0.6%. CONCLUSIONS Identification of AHI by the dual EarlyTest screening algorithm is likely to be cost-effective not only among at-risk MSM in San Diego but also among similar populations of MSM with HIV prevalence rates >0.4%.
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Affiliation(s)
- Martin Hoenigl
- Division of Infectious Diseases, University of California-San Diego.,Division of Pulmonology.,Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University of Graz, Austria
| | - Joshua Graff-Zivin
- School of International Relations and Pacific Studies and Department of Economics, University of California-San Diego
| | - Susan J Little
- Division of Infectious Diseases, University of California-San Diego
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21
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Huang YLA, Hutchinson AB, Hollis ND, Sansom SL. Notification following new positive HIV test results. Int J STD AIDS 2015; 27:868-72. [PMID: 26378191 DOI: 10.1177/0956462415598090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 07/03/2015] [Indexed: 11/17/2022]
Abstract
Client notification of a new HIV diagnosis is critical for timely access to treatment and reduction in behaviours associated with HIV infection. It is also an important input in HIV transmission and disease progression models. We used national, Centers for Disease Control and Prevention-funded HIV testing events data collected through the National HIV Prevention Program Monitoring and Evaluation system to update estimates of the proportion of newly identified HIV-positives notified of their status. We compared estimates from 2008 to 2010 across test technologies, settings, and HIV risk groups. In 2010, notification following a positive rapid test was 99.6% compared with 99.3% in 2008. Notification following a positive conventional test was 81.5% in 2010 compared with 80.8% in 2008. To realise the full promise of early HIV diagnosis and treatment for the prevention of additional HIV cases, efforts to ensure prompt notification following a new HIV diagnosis will be crucial.
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Affiliation(s)
- Ya-Lin A Huang
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Angela B Hutchinson
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - NaTasha D Hollis
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Stephanie L Sansom
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
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Hoenigl M, Anderson CM, Green N, Mehta SR, Smith DM, Little SJ. Repeat HIV-testing is associated with an increase in behavioral risk among men who have sex with men: a cohort study. BMC Med 2015; 13:218. [PMID: 26444673 PMCID: PMC4596465 DOI: 10.1186/s12916-015-0458-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/19/2015] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The Center for Disease Control and Prevention recommends that high-risk groups, like sexually active men who have sex with men (MSM), receive HIV testing and counseling at least annually. The objective of this study was to investigate the relationship between voluntary repeat HIV testing and sexual risk behavior in MSM receiving rapid serologic and nucleic acid amplification testing. METHODS We performed a cohort study to analyze reported risk behavior among MSM receiving the "Early Test", a community-based, confidential acute and early HIV infection screening program in San Diego, California, between April 2008 and July 2014. The study included 8,935 MSM receiving 17,333 "Early Tests". A previously published risk behavior score for HIV acquisition in MSM (i.e. Menza score) was chosen as an outcome to assess associations between risk behaviors and number of repeated tests. RESULTS At baseline, repeat-testers (n = 3,202) reported more male partners and more condomless receptive anal intercourse (CRAI) when compared to single-testers (n = 5,405, all P <0.001). In 2,457 repeat testers there was a strong association observed between repeated HIV tests obtained and increased risk behavior, with number of male partners, CRAI with high risk persons, non-injection stimulant drug use, and sexually transmitted infections all increasing between the first and last test. There was also a linear increase of risk (i.e. high Menza scores) with number of tests up to the 17th test. In the multivariable mixed effects model, more HIV tests (OR = 1.18 for each doubling of the number of tests, P <0.001) and younger age (OR = 0.95 per 5-year increase, P = 0.006) had significant associations with high Menza scores. CONCLUSIONS This study found that the highest risk individuals for acquiring HIV (e.g. candidates for antiretroviral pre-exposure prophylaxis) can be identified by their testing patterns. Future studies should delineate causation versus association to improve prevention messages delivered to repeat testers during HIV testing and counseling sessions.
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Affiliation(s)
- Martin Hoenigl
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA. .,Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical University of Graz, Graz, Austria. .,Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria.
| | - Christy M Anderson
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA
| | - Nella Green
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA
| | - Sanjay R Mehta
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA.,Veterans Affairs Healthcare System, San Diego, CA, USA
| | - Davey M Smith
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA.,Veterans Affairs Healthcare System, San Diego, CA, USA
| | - Susan J Little
- AntiViral Research Center, Division of Infectious Diseases, Department of Medicine, University of California, San Diego, 200 West Arbor Drive #8208, San Diego, CA, 92103, USA.
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Khanna AS, Roberts ST, Cassels S, Ying R, John-Stewart G, Goodreau SM, Baeten JM, Murnane PM, Celum C, Barnabas RV. Estimating PMTCT's Impact on Heterosexual HIV Transmission: A Mathematical Modeling Analysis. PLoS One 2015; 10:e0134271. [PMID: 26262889 PMCID: PMC4532442 DOI: 10.1371/journal.pone.0134271] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 07/08/2015] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Prevention of mother-to-child HIV transmission (PMTCT) strategies include combined short-course antiretrovirals during pregnancy (Option A), triple-drug antiretroviral treament (ART) during pregnancy and breastfeeding (Option B), or lifelong ART (Option B+). The WHO also recommends ART for HIV treatment and prevention of sexual transmission of HIV. The impact of PMTCT strategies on prevention of sexual HIV transmission of HIV is not known. We estimated the population-level impact of PMTCT interventions on heterosexual HIV transmission in southwestern Uganda and KwaZulu-Natal, South Africa, two regions with different HIV prevalence and fertility rates. MATERIALS AND METHODS We constructed and validated dynamic, stochastic, network-based HIV transmission models for each region. PMTCT Options A, B, and B+ were simulated over ten years under three scenarios: 1) current ART and PMTCT coverage, 2) current ART and high PMTCT coverage, and 3) high ART and PMTCT coverage. We compared adult HIV incidence after ten years of each intervention to Option A (and current ART) at current coverage. RESULTS At current coverage, Options B and B+ reduced heterosexual HIV incidence by about 5% and 15%, respectively, in both countries. With current ART and high PMTCT coverage, Option B+ reduced HIV incidence by 35% in Uganda and 19% in South Africa, while Option B had smaller, but meaningful, reductions. The greatest reductions in HIV incidence were achieved with high ART and PMTCT coverage. In this scenario, all PMTCT strategies yielded similar results. DISCUSSION Implementation of Options B/B+ reduces adult HIV incidence, with greater effect (relative to Option A at current levels) in Uganda than South Africa. These results are likely driven by Uganda's higher fertility rates.
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Affiliation(s)
- Aditya S. Khanna
- Department of Medicine, University of Chicago, Chicago, Illinois, United States of America
| | - Sarah T. Roberts
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Susan Cassels
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Geography, University of California, Santa Barbara, California, United States of America
| | - Roger Ying
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Grace John-Stewart
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington, Seattle, Washington, United States of America
| | - Steven M. Goodreau
- Department of Anthropology, University of Washington, Seattle, Washington, United States of America
| | - Jared M. Baeten
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
| | - Pamela M. Murnane
- College of Physicians and Surgeons, Columbia University, New York, New York, United States of America
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
| | - Ruanne V. Barnabas
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington, Seattle, Washington, United States of America
- Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
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Hoenigl M, Green N, Mehta SR, Little SJ. Risk Factors for Acute and Early HIV Infection Among Men Who Have Sex With Men (MSM) in San Diego, 2008 to 2014: A Cohort Study. Medicine (Baltimore) 2015; 94:e1242. [PMID: 26222863 PMCID: PMC4554110 DOI: 10.1097/md.0000000000001242] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The objectives of this study were to identify risk factors associated with acute and early HIV infection (AEH) among men who have sex with men (MSM) undergoing community HIV testing and to compare demographics in those diagnosed with AEH with those diagnosed at chronic stage of HIV infection.In this retrospective cohort study, we analyzed risk factors associated with AEH among 8925 unique MSM (including 200 with AEH [2.2%] and 219 [2.5%] with newly diagnosed chronic HIV infection) undergoing community-based, confidential AEH screening in San Diego, California.The combination of condomless receptive anal intercourse (CRAI) plus ≥5 male partners, CRAI with an HIV-positive male, CRAI with a person who injects drugs, and prior syphilis diagnosis were significant predictors of AEH in the multivariable Cox regression model. Individuals reporting ≥1 of these 4 risk factors had a hazard ratio of 4.6 for AEH. MSM diagnosed with AEH differed in race (P = 0.005; more reported white race [P = 0.001], less black race [P = 0.030], trend toward less Native American race [P = 0.061]), when compared to those diagnosed with chronic HIV infection, while there was no difference observed regarding age.We established a multivariate model for the predicting risk of AEH infection in a cohort of MSM undergoing community HIV screening, which could be potentially used to discern those in need of further HIV nucleic acid amplification testing for community screening programs that do not test routinely for AEH. In addition, we found that race differed between those diagnosed with AEH and those diagnosed at chronic stage of HIV infection underlining the need for interventions that reduce stigma and promote the uptake of HIV testing for black MSM.
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Affiliation(s)
- Martin Hoenigl
- From the Division of Infectious Diseases, University of California San Diego (UCSD), San Diego, California (MH, NG, SRM, SJL); Section of Infectious Diseases and Tropical Medicine, Department of Internal Medicine (MH); Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria (MH); and Veterans Affairs Healthcare System, San Diego, California (SRM)
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Khanna A, Goodreau SM, Wohlfeiler D, Daar E, Little S, Gorbach PM. Individualized diagnosis interventions can add significant effectiveness in reducing human immunodeficiency virus incidence among men who have sex with men: insights from Southern California. Ann Epidemiol 2014; 25:1-6. [PMID: 25453725 DOI: 10.1016/j.annepidem.2014.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 09/24/2014] [Accepted: 09/28/2014] [Indexed: 01/04/2023]
Abstract
PURPOSE In this article, we examine the effectiveness of a variety of HIV diagnosis interventions in recently HIV-diagnosed men who have sex with men (MSM). These interventions use the preventive potential of postdiagnosis behavior change (PDBC), as measured by the reduction in the number of new infections. Empirical evidence for PDBC was presented in the behavioral substudy of the Southern California Acute Infection and Early Disease Research Program. In previous modeling work, we demonstrated the existing preventive effects of PDBC. However, a large proportion of new infections among MSM are either undiagnosed or diagnosed late, and the preventive potential of PDBC is not fully utilized. METHODS We derive empirical, stochastic, network-based models to examine the effectiveness of several diagnosis interventions that account for PDBC among MSM over a 10-year period. These interventions involve tests with shorter detection windows, more frequent testing, and individualized testing regimens. RESULTS We find that individualized testing interventions (i.e., testing individuals every three partners or 3 months, whichever is first, or every six partners or 6 months, whichever is first) result in significantly fewer new HIV infections than the generalized interventions we consider. CONCLUSIONS This work highlights the potential of individualized interventions for new public health policies in HIV prevention.
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Affiliation(s)
- Aditya Khanna
- Department of Medicine, University of Chicago, Chicago, IL.
| | | | - Dan Wohlfeiler
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco, CA
| | - Eric Daar
- David Geffen School of Medicine, University of California, Los Angeles, CA
| | - Susan Little
- Department of Medicine, University of California, San Diego, CA
| | - Pamina M Gorbach
- Fielding School of Public Health, David Geffen School of Medicine, University of California, Los Angeles, CA
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