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Sanchez T, Mavragani A, Materu J, Drake M, Majani E, Casalini C, Mjungu D, Mbita G, Kalage E, Komba A, Nyato D, Nnko S, Shao A, Changalucha J, Wambura M. Effectiveness of Cash Transfer Delivered Along With Combination HIV Prevention Interventions in Reducing the Risky Sexual Behavior of Adolescent Girls and Young Women in Tanzania: Cluster Randomized Controlled Trial. JMIR Public Health Surveill 2022; 8:e30372. [PMID: 36121686 PMCID: PMC9531008 DOI: 10.2196/30372] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 05/19/2022] [Accepted: 08/02/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Poverty and social inequality exacerbate HIV risk among adolescent girls and young women (AGYW) in sub-Saharan Africa. Cash transfers can influence the structural determinants of health, thereby reducing HIV risk. OBJECTIVE This study assessed the effectiveness of cash transfer delivered along with combination HIV prevention (CHP) interventions in reducing the risky sexual behavior of AGYW in Tanzania. The incidence of herpes simplex virus type 2 (HSV-2) infection was used as a proxy for sexual risk behavior. METHODS A cluster randomized controlled trial was conducted in 15 matched pairs of communities (1:1 intervention to control) across 3 strata (urban, rural high-risk, and rural low-risk populations) of the Shinyanga Region, Tanzania. The target population was out-of-school AGYW aged 15-23 years who had completed 10-hour sessions of social and behavior change communication. Eligible communities were randomly assigned to receive CHP along with cash transfer quarterly (intervention group) or solely CHP interventions (control group) with no masking. Study recruitment and baseline survey were conducted between October 30, 2017 and December 1, 2017. Participants completed an audio computer-assisted self-interview, HIV counselling and testing, and HSV-2 testing at baseline and during follow-up visits at 6, 12, and 18 months after the baseline survey. A Cox proportional hazards model with random effects specified at the level of clusters (shared frailty) adjusted for matching pairs and other baseline imbalances was fitted to assess the effects of cash transfer on the incidence of HSV-2 infection (primary outcome). Secondary outcomes included HIV prevalence at follow-up, self-reported intergenerational sex, and self-reported compensated sex. All secondary outcomes were measured at each study visit. RESULTS Of the 3026 AGYW enrolled in the trial (1482 in the intervention and 1544 in the control), 2720 AGYW (1373 in the intervention and 1347 in the control) were included in the final analysis. Overall, HSV-2 incidence was not significantly different at all follow-up points between the study arms in the adjusted analysis (hazard ratio 0.96, 95% CI 0.67-1.38; P=.83). However, HSV-2 incidence was significantly lower in the rural low-risk populations who received the cash transfer intervention (hazard ratio 0.45, 95% CI 0.29-0.71; P=.001), adjusted for potential confounders. CONCLUSIONS Although this trial showed no significant impact of the cash transfer intervention on HSV-2 incidence among AGYW overall, the intervention significantly reduced HSV-2 incidence among AGYW in rural low-risk communities. Factors such as lesser poverty and more asset ownership in urban and rural high-risk communities may have undermined the impact of cash transfer. TRIAL REGISTRATION ClinicalTrials.gov NCT03597243; https://clinicaltrials.gov/show/NCT03597243.
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Affiliation(s)
| | | | - Jacqueline Materu
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
| | - Mary Drake
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Esther Majani
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Caterina Casalini
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Deusdedit Mjungu
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Gaspar Mbita
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Esther Kalage
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Albert Komba
- Sauti Project, Jhpiego (an affiliate of John Hopkins University), Dar-es-Salaam, United Republic of Tanzania
| | - Daniel Nyato
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
| | - Soori Nnko
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
| | - Amani Shao
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
| | - John Changalucha
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
| | - Mwita Wambura
- Department of Sexual and Reproductive Health, National Institute for Medical Research, Mwanza, United Republic of Tanzania
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Wambura M, Drake M, Kuringe E, Majani E, Nyato D, Casalini C, Materu J, Mjungu D, Nnko S, Mbita G, Kalage E, Shao A, Changalucha J, Komba A. Cash Transfer to Adolescent Girls and Young Women to Reduce Sexual Risk Behavior (CARE): Protocol for a Cluster Randomized Controlled Trial. JMIR Res Protoc 2019; 8:e14696. [PMID: 31859686 PMCID: PMC6942193 DOI: 10.2196/14696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/27/2019] [Accepted: 09/28/2019] [Indexed: 11/13/2022] Open
Abstract
Background The HIV epidemic in Eastern and Southern Africa is characterized by a high incidence and prevalence of HIV infection among adolescent girls and young women (AGYW) aged 15-24 years. For instance, in some countries, HIV prevalence in AGYW aged 20-24 years exceeds that in AGYW aged 15-19 years by 2:1. Sauti (meaning voices), a project supported by the United States Agency for International Development, is providing HIV combination prevention interventions to AGYW in the Shinyanga region, Tanzania. Objective The aim of this study is to determine the impact of cash transfer on risky sexual behavior among AGYW receiving cash transfer and HIV combination prevention interventions. This paper describes the research methods and general protocol of the study. Risky sexual behavior will be assessed by herpes simplex virus type 2 (HSV-2) incidence, compensated sex (defined as sexual encounters motivated by exchange for money, material support, or other benefits), and intergenerational sex (defined as a sexual partnership between AGYW and a man 10 or more years older). Through a qualitative study, the study seeks to understand how the intervention affects the structural and behavioral drivers of the HIV epidemic. Methods The trial employs audio computer-assisted self-interviewing, participatory group discussions (PGDs), and case studies to collect data. A total of 30 matched villages (15 intervention and 15 control clusters) were randomized to either receive cash transfer delivered over 18 months in addition to other HIV interventions (intervention arm) or to receive other HIV interventions without cash transfer (control arm). Study participants are interviewed at baseline and 6, 12, and 18 months to collect data on demographics, factors related to HIV vulnerabilities, family planning, sexual risk behavior, gender-based violence, and HSV-2 and HIV infections. A total of 6 PGDs (3 intervention, 3 control) were conducted at baseline to describe perceptions and preferences of different intervention packages, whereas 20 case studies are used to monitor and unearth the dynamics involved in delivery and uptake of cash transfer. Results The study was funded in June 2017; enrollment took place in December 2017. A total of two rounds of the follow-up survey are complete, and one round has yet to be conducted. The results are expected in December 2019 and will be disseminated through conferences and peer-reviewed publications. Conclusions This study will document the synergetic impact of cash transfer in the presence of HIV combination prevention interventions on risky sexual behavior among out-of-school AGYW. The results will strengthen the evidence of cash transfer in the reduction of risky sexual behavior and provide feasible HIV prevention strategies for AGYW. Trial Registration Clinicaltrials.gov NCT03597243; https://clinicaltrials.gov/ct2/show/NCT03597243. International Registered Report Identifier (IRRID) DERR1-10.2196/14696
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Affiliation(s)
- Mwita Wambura
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Mary Drake
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Evodius Kuringe
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Esther Majani
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Daniel Nyato
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Caterina Casalini
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Jacqueline Materu
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Deusdedit Mjungu
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Soori Nnko
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Gaspar Mbita
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Esther Kalage
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
| | - Amani Shao
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - John Changalucha
- National Institute for Medical Research, Mwanza Centre, Mwanza, United Republic of Tanzania
| | - Albert Komba
- Jhpiego Tanzania - an Affiliate of Johns Hopkins University, Sauti project, Dar es Salaam, United Republic of Tanzania
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Abstract
OBJECTIVE We sought to describe the current status of perinatal HIV exposure surveillance (PHES) activities and regulations in the United States and to make recommendations to strengthen PHES. METHODS In 2014, we sent an online survey to health departments in the 50 states, District of Columbia, Puerto Rico, Virgin Islands, and 6 cities and counties (Chicago, Illinois; Houston, Texas; Los Angeles, California; New York, New York; Philadelphia, Pennsylvania; and San Francisco, California). We analyzed responses from 56 of the 59 (95%) jurisdictions. RESULTS Thirty-three of 56 jurisdictions (59%) reported conducting PHES and following infants to determine their infection status. Of the 33 jurisdictions performing PHES, 28 (85%) linked maternal and infant data, but only 12 (36%) determined the HIV care status of postpartum women. Themes of respondents' recommendations for strengthening PHES centered on updating laws and regulations to support PHES, reporting all HIV test results and linking vital records with PHES data to identify and follow HIV-exposed infants, communicating with health care providers to improve reporting, training staff, and getting help from experienced jurisdictions to implement PHES. CONCLUSIONS Our findings indicate that data on perinatal exposure collected through the current system are inadequate to comprehensively monitor and prevent perinatal HIV exposure and transmission. Comprehensive PHES data collection and reporting are needed to sustain the progress that has been made toward lowering perinatal HIV transmission rates. We propose that minimum standards be established for perinatal HIV exposure reporting to improve the completeness, quality, and efficiency of PHES in the United States.
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Affiliation(s)
- Kathleen A. Brady
- AIDS Activities Coordinating Office, Philadelphia Department of Public Health, Philadelphia, PA, USA
| | - Deborah S. Storm
- François-Xavier Bagnoud Center, School of Nursing, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Azita Naghdi
- Division of HIV and STD Program, Los Angeles County Department of Public Health, Los Angeles, CA, USA
| | - Toni Frederick
- Maternal Child Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA
| | - Jessica Fridge
- STD/HIV Program, Office of Public Health, Louisiana Department of Health and Hospitals, New Orleans, LA, USA
| | - Mary Jo Hoyt
- François-Xavier Bagnoud Center, School of Nursing, Rutgers, The State University of New Jersey, Newark, NJ, USA
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Joore IK, Twisk DE, Vanrolleghem AM, de Ridder M, Geerlings SE, van Bergen JEAM, van den Broek IV. The need to scale up HIV indicator condition-guided testing for early case-finding: a case-control study in primary care. BMC Fam Pract 2016; 17:161. [PMID: 27855639 PMCID: PMC5114759 DOI: 10.1186/s12875-016-0556-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 11/02/2016] [Indexed: 01/03/2023]
Abstract
Background European guidelines recommend offering an HIV test to individuals who display HIV indicator conditions (ICs). We aimed to investigate the incidence of ICs in primary care reported in medical records prior to HIV diagnosis. Methods We did a cross-sectional search in an electronic general practice database using a matched case-control design to identify which predefined ICs registered by Dutch GPs were most associated with an HIV-positive status prior to the time of diagnosis. Results We included 224 HIV cases diagnosed from 2009 to 2013, which were matched with 2,193 controls. Almost two thirds (n = 136, 60.7%) of cases were diagnosed with one or more ICs in the period up to five years prior to the index date compared to 18.7% (n = 411) of controls. Cases were more likely to have an IC than controls: in the one year prior to the index date, the odds ratio (OR) for at least one condition was 11.7 (95% CI: 8.3 to 16.4). No significant differences were seen in the strength of the association between HIV diagnosis and ICs when comparing genders, age groups or urbanisation levels. There is no indication that subgroups require a different testing strategy. Conclusions Our study shows that there are opportunities for IC-guided testing in primary care. We recommend that IC-guided testing be more integrated in GPs’ future guidelines and that education strategies be used to facilitate its implementation in daily practice. Electronic supplementary material The online version of this article (doi:10.1186/s12875-016-0556-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ivo K Joore
- Department of General Practice, Division Clinical Methods and Public Health, Academic Medical Center, Meibergdreef 9, 1100, DE, Amsterdam, The Netherlands.
| | - Denise E Twisk
- National Institute for Public Health and the Environment (RIVM), Epidemiology & Surveillance Unit, Centre for Infectious Disease Control, Bilthoven, The Netherlands
| | - Ann M Vanrolleghem
- Department of Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Maria de Ridder
- Department of Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Suzanne E Geerlings
- Department of Internal Medicine, Division of Infectious Diseases, Academic Medical Center, Amsterdam, The Netherlands
| | - Jan E A M van Bergen
- Department of General Practice, Division Clinical Methods and Public Health, Academic Medical Center, Meibergdreef 9, 1100, DE, Amsterdam, The Netherlands.,STI AIDS Netherlands (SOA AIDS Nederland), Amsterdam, The Netherlands
| | - Ingrid V van den Broek
- National Institute for Public Health and the Environment (RIVM), Epidemiology & Surveillance Unit, Centre for Infectious Disease Control, Bilthoven, The Netherlands
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Deuba K, Anderson S, Ekström AM, Pandey SR, Shrestha R, Karki DK, Marrone G. Micro-level social and structural factors act synergistically to increase HIV risk among Nepalese female sex workers. Int J Infect Dis 2016; 49:100-6. [PMID: 27312580 DOI: 10.1016/j.ijid.2016.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 06/03/2016] [Accepted: 06/07/2016] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES Sex workers face stigma, discrimination, and violence across the globe and are almost 14 times more likely to be HIV-infected than other women in low- and middle-income countries. In Asia, condom campaigns at brothels have been effective in some settings, but for preventive interventions to be sustainable, it is important to understand micro-level social and structural factors that influence sexual behaviours of sex workers. This study assessed the syndemic effects of micro-level social and structural factors of unprotected sex and the prevalence of HIV among female sex workers (FSWs) in Nepal. METHODS This quantitative study included 610 FSWs who were recruited using two-stage cluster sampling from September to November 2012 in 22 Terai Highway districts of Nepal. Rapid HIV tests and face-to-face interviews were conducted to collect biological and behavioural information. A count of physical (sexual violence and other undesirable events), social (poor social support and condom negotiation skills), and economic (unprotected sex to make more money) factors that operate at the micro-level was calculated to test the additive relationship to unprotected sex. RESULTS The HIV prevalence was 1%; this is presumably representative, with a large sample of FSWs in Nepal. The prevalence of unprotected sex with clients was high (24%). For each additional adverse physical, social, and economic condition, the probability of non-use of condoms with clients increased substantially: one problem = 12% (p<0.005), two problems = 19% (p<0.001), and three to five problems = 38% (p<0.001). CONCLUSIONS Interactions between two or more adverse conditions linked to physical, social, and economic environments increased the risk of unprotected sex among Nepalese FSWs.
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Berenguer J, Rivero A, Jarrín I, Núñez MJ, Vivancos MJ, Crespo M, Téllez MJ, Domingo P, Iribarren JA, Artero A, Márquez M, Santos I, Moreno J, Montero M, González-García J. Human Immunodeficiency Virus/Hepatitis C Virus Coinfection in Spain: Prevalence and Patient Characteristics. Open Forum Infect Dis 2016; 3:ofw059. [PMID: 27186584 PMCID: PMC4866570 DOI: 10.1093/ofid/ofw059] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/09/2016] [Indexed: 02/06/2023] Open
Abstract
Background. The purpose of this study was to assess the prevalence of anti-hepatitis C virus (HCV) antibodies (Abs) and active HCV infection in human immunodeficiency virus (HIV)-infected (HIV+) patients in Spain in 2015. This was a cross-sectional study. Methods. The study was performed in 41 centers in 2015. Sample size was estimated for an accuracy of 2%, the number of patients from each hospital was determined by proportional allocation, and patients were selected using simple random sampling. Results. The reference population was 35 791 patients, and the sample size was 1867 patients. Hepatitis C virus serostatus was known in 1843 patients (98.7%). Hepatitis C virus-Abs were detected in 695 patients (37.7%), in whom the main route of HIV acquisition was injection drug use (75.4%). Of these 695 patients, 402 had HCV RNA, 170 had had a sustained viral response (SVR) after anti-HCV therapy, and 102 cleared HCV spontaneously. Hepatitis C virus-ribonucleic acid results were unknown in 21 cases. Genotype distribution (known in 367 patients) was 1a in 143 patients (39.0%), 4 in 90 (24.5%) patients, 1b in 69 (18.8%) patients, 3 in 57 (15.5%) patients, 2 in 5 (1.4%) patients, and mixed in 3 (0.8%) patients. Liver cirrhosis was present in 93 patients (23.1%) with active HCV infection and in 39 (22.9%) patients with SVR after anti-HCV therapy. Conclusions. The prevalence of HCV-Abs and active HCV infection in HIV+ patients in Spain is 37.7% and 22.1%, respectively; these figures are significantly lower than those recorded in 2002 and 2009. The predominant genotypes in patients with active HCV infection were 1a and 4. A high percentage of patients had cirrhosis. Cirrhosis is also common in patients with SVR after anti-HCV therapy.
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Affiliation(s)
- Juan Berenguer
- Hospital General Universitario Gregorio Marañón; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid
| | - Antonio Rivero
- Hospital Universitario Reina Sofia, Cordoba; Instituto Maimonides de Investigacion Biomedica de Cordoba
| | | | - María J Núñez
- Hospital Universitario La Paz; Instituto de Investigación Sanitaria La Paz
| | | | | | | | - Pere Domingo
- Hospital de la Santa Creu i Sant Pau , Barcelona
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Said MA, German D, Flynn C, Linton SL, Blythe D, Cooley LA, Balaji AB, Oster AM. Uptake of Testing for HIV and Syphilis Among Men Who Have Sex with Men in Baltimore, Maryland: 2004-2011. AIDS Behav 2015; 19:2036-43. [PMID: 26078117 DOI: 10.1007/s10461-015-1106-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Men who have sex with men (MSM) in Baltimore are at disproportionately high risk for HIV and syphilis infection. Testing and diagnosis are important first steps in receiving treatment and reducing transmission. We analyzed cross-sectional data collected in 2004-2005, 2008, and 2011 among MSM not reporting a previous positive HIV test (n = 1268) in Baltimore, Maryland as part of the National HIV Behavioral Surveillance System to determine the proportion of men tested for HIV and/or syphilis within the previous 12 months and examine the extent to which opportunities for testing were being missed in health care settings. Within the previous 12 months, 54 % of men had received an HIV test; 31 % had received a syphilis test; and only 23 % of men had received testing for both. Among 979 men who did not receive both tests, 72 % had seen a health care provider in the past year, suggesting missed testing opportunities.
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Rai T, Lambert HS, Borquez AB, Saggurti N, Mahapatra B, Ward H. Circular labor migration and HIV in India: exploring heterogeneity in bridge populations connecting areas of high and low HIV infection prevalence. J Infect Dis 2015; 210 Suppl 2:S556-61. [PMID: 25381375 PMCID: PMC4231641 DOI: 10.1093/infdis/jiu432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background. The emerging human immunodeficiency virus (HIV) epidemics in rural areas of India are hypothesized to be linked to circular migrants who are introducing HIV from destination areas were the prevalence of HIV infection is higher. We explore the heterogeneity in potential roles of circular migrants in driving an HIV epidemic in a rural area in north India and examine the characteristics of the “sustaining bridge population”, which comprises individuals at risk of HIV acquisition at destination and of HIV transmission into networks at origin capable of sustaining an epidemic. Methods. Results of a behavioral survey of 639 male migrants from Azamgarh district, India, were analyzed using χ2 tests and logistic regression. Results. We estimated the size of various subgroups defined by specific sexual behaviors across different locations and over time. Only 20% fit our definition of a sustaining bridge population, with the majority making no apparent contribution to geographical connectedness between high- and low-prevalence areas. However, we found evidence of sexual contacts at origin that could potentially sustain an epidemic once HIV is introduced. Variables associated with sustaining bridge population membership were self-perceived HIV risk, current migrant status, and age. Conclusions. Circular migrants represent a heterogeneous population in terms of their role as a bridge group. Self-perception of heightened risk could be exploited in designing prevention programs.
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Affiliation(s)
- Tanvi Rai
- Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London
| | - Helen S Lambert
- School of Social and Community Medicine, University of Bristol, United Kingdom
| | - Annick B Borquez
- Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London
| | | | | | - Helen Ward
- Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London
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Gandhi NR, Tate JP, Rodriguez-Barradas MC, Rimland D, Goetz MB, Gibert C, Brown ST, Mattocks K, Justice AC. Validation of an algorithm to identify antiretroviral-naïve status at time of entry into a large, observational cohort of HIV-infected patients. Pharmacoepidemiol Drug Saf 2013; 22:1019-25. [PMID: 23836591 DOI: 10.1002/pds.3476] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 04/18/2013] [Accepted: 05/31/2013] [Indexed: 01/23/2023]
Abstract
PURPOSE Large, observational HIV cohorts play an important role in answering questions which are difficult to study in randomized trials; however, they often lack detailed information regarding previous antiretroviral treatment (ART). Knowledge of ART treatment history is important when ascertaining the long-term impact of medications, co-morbidities, or adverse reactions on HIV outcomes. METHODS We performed a retrospective study to validate a prediction algorithm for identifying ART-naïve patients using the Veterans Aging Cohort Study's Virtual Cohort-an observational cohort of 40 594 HIV-infected veterans nationwide. Medical records for 3070 HIV-infected patients were reviewed to determine history of combination ART treatment. An algorithm using Virtual Cohort laboratory data was used to predict ART treatment status and compared to medical record review. RESULTS Among 3070 patients' medical records reviewed, 1223 were eligible for analysis. Of these, 990 (81%) were ART naïve at cohort entry based on medical record review. The prediction algorithm's sensitivity was 86%, specificity 47%, positive predictive value (PPV) 87%, and negative predictive value 45%, using a viral load threshold of <400 copies/ml. Sensitivity analysis revealed that PPV would be maximized by increasing the viral load threshold, whereas sensitivity would be maximized by lowering the viral load threshold. CONCLUSIONS A prediction algorithm using available laboratory data can be used to accurately identify ART-naïve patients in large, observational HIV cohorts. Use of this algorithm will allow investigators to accurately limit analyses to ART-naïve patients when studying the contribution of ART to outcomes and adverse events.
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Affiliation(s)
- Neel R Gandhi
- Division of General Internal Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA.
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