Gaitonde Center for Research and Education

Chennai, India

Gaitonde Center for Research and Education

Chennai, India
Time filter
Source Type

Marrazzo J.M.,University of Washington | Del Rio C.,Emory University | Cohen M.S.,University of North Carolina at Chapel Hill | Kalichman S.C.,University of Connecticut | And 11 more authors.
JAMA - Journal of the American Medical Association | Year: 2014

IMPORTANCE: Emerging data warrant the integration of biomedical and behavioral recommendations for human immunodeficiency virus (HIV) prevention in clinical care settings. OBJECTIVE: To provide current recommendations for the prevention of HIV infection in adults and adolescents for integration in clinical care settings. DATA SOURCES, STUDY SELECTION, AND DATA SYNTHESIS: Data published or presented as abstracts at scientific conferences (past 17 years) were systematically searched and reviewed by the International Antiviral (formerly AIDS) Society-USA HIV Prevention Recommendations Panel. Panel members supplied additional relevant publications, reviewed available data, and formed recommendations by full-panel consensus. RESULTS: Testing for HIV is recommended at least once for all adults and adolescents, with repeated testing for those at increased risk of acquiring HIV. Clinicians should be alert to the possibility of acute HIV infection and promptly pursue diagnostic testing if suspected. At diagnosis of HIV, all individuals should be linked to care for timely initiation of antiretroviral therapy (ART). Support for adherence and retention in care, individualized risk assessment and counseling, assistance with partner notification, and periodic screening for common sexually transmitted infections (STIs) is recommended for HIV-infected individuals as part of care. In HIV-uninfected patients, those persons at high risk of HIV infection should be prioritized for delivery of interventions such as preexposure prophylaxis and individualized counseling on risk reduction. Daily emtricitabine/tenofovir disoproxil fumarate is recommended as preexposure prophylaxis for persons at high risk for HIV based on background incidence or recent diagnosis of incident STIs, use of injection drugs or shared needles, or recent use of nonoccupational postexposure prophylaxis; ongoing use of preexposure prophylaxis should be guided by regular risk assessment. For persons who inject drugs, harm reduction services should be provided (needle and syringe exchange programs, supervised injection, and available medically assisted therapies, including opioid agonists and antagonists); low-threshold detoxification and drug cessation programs should be made available. Postexposure prophylaxis is recommended for all persons who have sustained a mucosal or parenteral exposure to HIV from a known infected source and should be initiated as soon as possible. CONCLUSIONS AND RELEVANCE: Data support the integration of biomedical and behavioral approaches for prevention of HIV infection in clinical care settings. A concerted effort to implement combination strategies for HIV prevention is needed to realize the goal of an AIDS-free generation. Copyright 2014 American Medical Association. All rights reserved.

Solomon S.S.,Gaitonde Center for Research and Education | Srikrishnan A.K.,Gaitonde Center for Research and Education | Vasudevan C.K.,Gaitonde Center for Research and Education | Balakrishnan P.,Gaitonde Center for Research and Education | And 4 more authors.
AIDS | Year: 2015

Objective: To characterize prevalence, incidence, and associated correlates of HIV infection among MSM in 12 cities across India. Design: Cross-sectional sample using respondent-driven sampling from September 2012 to June 2013. Methods: A total 12 022 MSM (-1000/city) were recruited. Participants had to be at least 18 years, self-identify as male, and report oral/anal intercourse with a man in the prior year. HIV infection was diagnosed using three rapid tests. Cross-sectional HIV incidence was estimated using a multiassay algorithm. All estimates incorporate respondent-driven sampling-II weights. Results: Median age was 25 years, 45% self-identified as 'panthi' (predominantly penetrative anal intercourse) and 30.6% reported being married to a woman. Weighted HIV prevalence was 7.0% (range: 1.7-13.1%). In multivariate analysis, significantly higher odds of HIV infection was observed among those who were older, had lower educational attainment, were practicing purely receptive anal sex or both receptive and penetrative sex, and those who were herpes simplex virus-2 positive. Of 1147 MSM who tested HIV positive, 53 were identified as recent HIV infections (annualized incidence=0.87%; range=0-2.2%). In multivariate analysis, injecting drugs in the prior 6 months, syphilis, and higher number of male partners and fewer female partners were significantly associated with recent HIV infection. Conclusion: We observed a high burden of HIV among MSM in India with tremendous diversity in prevalence, incidence, and risk behaviors. In particular, we observed high incidence in areas with relatively low prevalence suggesting emerging epidemics in areas not previously recognized to have high HIV burden. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.

Leoutsakas D.,Salisbury University | Zabransky T.,Charles University | Kumar M.S.,Gaitonde Center for Research and Education
Journal of the International AIDS Society | Year: 2011

For persons living with HIV, hepatitis C is a major public health problem that must be controlled and could be eliminated. The challenge arises because the hepatitis C virus (HCV) is prevalent among HIV-infected persons in most parts of the world, because HIV worsens all HCV outcomes, and because HCV may add additional individual economic and psychosocial complications to HIV disease. Despite the major benefits of antiretroviral therapy on HIV outcomes, antiretroviral therapy is not sufficient to halt the complications of HCV. Nonetheless, HCV can be controlled at all stages, including prevention of infection and cure. Thus, HCV is an eradicable disease. There are significant inequalities worldwide in HCV control that could markedly constrain the impact of these measures. © 2011 Thomas et al; licensee BioMed Central Ltd.

Solomon S.S.,Gaitonde Center for Research and Education | Srikrishnan A.K.,Gaitonde Center for Research and Education | Solomon S.,Gaitonde Center for Research and Education | Laeyendecker O.,National Institute of Allergy and Infectious Diseases | And 6 more authors.
The Lancet Infectious Diseases | Year: 2015

Background: 90% of individuals infected with hepatitis C virus (HCV) worldwide reside in resource-limited settings. We aimed to characterise the prevalence of HCV, HIV/HCV co-infection, and the HCV care continuum in people who inject drugs in India. Methods: 14481 people (including 31 seeds-individuals selected as the starting point for sampling because they were well connected in the drug using community) who inject drugs were sampled from 15 cities throughout India using respondent-driven sampling from Jan 2, 2013 to Dec 19, 2013. Data from seeds were excluded from all analyses. HCV prevalence was estimated by the presence of anti-HCV antibodies incorporating respondent-driven sampling weights. HCV care continuum outcomes were self-reported except for viral clearance in treatment-experienced participants. Findings: The median age of participants was 30 years (IQR 24-36) and 13608 (92·4%) of 14449 were men (data were missing for some variables). Weighted HCV prevalence was 5777 (37·2%) of 14447; HIV/HCV co-infection prevalence was 2085 (13·2%) of 14435. Correlates of HCV infection included high lifetime injection frequency, HIV positivity, and a high prevalence of people with HIV RNA (more than 1000 copies per mL) in the community. Of the 5777 people who inject drugs that were HCV antibody positive, 440 (5·5%) were aware of their status, 225 (3·0%) had seen a doctor for their HCV, 79 (1·4%) had taken HCV treatment, and 18 (0·4%) had undetectable HCV RNA. Of 12128 participants who had not previously been tested for HCV, 6138 (50·5%) did not get tested because they had not heard of HCV. In the 5777 people who were HCV antibody positive, 2086 (34·4%) reported harmful or hazardous alcohol use, of whom 1082 (50·4%) were dependent, and 3821 (65·3%) reported needle sharing. Awareness of HCV positive status was significantly associated with higher education, HIV testing history, awareness of HIV positive status, and higher community antiretroviral therapy coverage. Interpretation: The high burden of HCV and HIV/HCV co-infection coupled with low-access to HCV services emphasises an urgent need to include resource-limited settings in the global HCV agenda. Although new treatments will become available worldwide in the near future, programmes to improve awareness and reduce disease progression and transmission need to be scaled up without further delay. Failure to do so could result in patterns of rising mortality, undermining advances in survival attributed to widespread HIV treatment. Funding: US National Institutes of Health. © 2015 Elsevier Ltd.

Solomon S.S.,Gaitonde Center for Research and Education | Srikrishnan A.K.,Gaitonde Center for Research and Education | Vasudevan C.K.,Gaitonde Center for Research and Education | Balakrishnan P.,Gaitonde Center for Research and Education | And 2 more authors.
AIDS and Behavior | Year: 2010

In India, men who have sex with men (MSM) remain hidden because anal intercourse was criminalized and marriage socially required. We characterize HIV/STI prevalence among MSM in Tamil Nadu. Eligible participants were recruited using respondent-driven sampling in eight cities (n = 721). Median age was 28, 34% were married and 40% self-identified as homosexual. Median number of male partners in the prior year was 15; 45% reported any unprotected anal intercourse (UAI). HIV, herpes simplex virus-2 (HSV-2), chronic hepatitis B virus (HBV) and syphilis prevalence were 9, 26, 2 and 8%, respectively; among married men, all were higher: 14, 32, 3 and 11% (p<0.01 for HIV and HSV-2). Less education, HSV-2, more male partners, UAI and not having a main male partner were associated with HIV prevalence. The high STI and UAI prevalence may lead to a burgeoning HIV epidemic among MSM, reinforcing the need for focused preventive measures incorporating complex circumstances. © Springer Science±;Business Media, LLC 2010.

Solomon S.S.,Gaitonde Center for Research and Education | Srikrishnan A.K.,Gaitonde Center for Research and Education
Journal of the International AIDS Society | Year: 2010

Background: HIV/AIDS in India disproportionately affects women, not by their own risks, but by those of their partners, generally their spouses. We address two marginalized populations at elevated risk of acquiring HIV: women who are married to men who also have sex with men (MSM) and wives of injection drug users (IDUs). Methods. We used a combination of focus groups (qualitative) and structured surveys (quantitative) to identify the risks that high-risk men pose to their low-risk wives and/or sexual partners. Married MSM were identified using respondent-driven recruitment in Tamil Nadu, India, and were interviewed by trainer assessors. A sample of wives of injection drug users in Chennai were recruited from men enrolled in a cohort study of the epidemiology of drug use among IDUs in Chennai, and completed a face-to-face survey. Focus groups were held with all groups of study participants, and the outcomes transcribed and analyzed for major themes on family, HIV and issues related to stigma, discrimination and disclosure. Results: Using mixed-methods research, married MSM are shown to not disclose their sexual practices to their wives, whether due to internalized homophobia, fear of stigma and discrimination, personal embarrassment or changing sexual mores. Married MSM in India largely follow the prevailing norm of marriage to the opposite sex and having a child to satisfy social pressures. Male IDUs cannot hide their drug use as easily as married MSM, but they also avoid disclosure. The majority of their wives learn of their drug-using behaviour only after they are married, making them generally helpless to protect themselves. Fear of poverty and negative influences on children were the major impacts associated with continuing drug use. Conclusions: We propose a research and prevention agenda to address the HIV risks encountered by families of high-risk men in the Indian and other low- and middle-income country contexts. © 2010 Solomon et al; licensee BioMed Central Ltd.

Srikrishnan A.K.,Gaitonde Center for Research and Education | Johnson S.,Gaitonde Center for Research and Education | Solomon S.S.,Gaitonde Center for Research and Education | Kumar S.,Gaitonde Center for Research and Education | Solomon S.,Gaitonde Center for Research and Education
Drug and Alcohol Dependence | Year: 2010

Background: The purpose of this study was to examine the relationship between perceived drug use stigma, acquiescence response bias, and HIV injection risk behaviors among current injection drug users in Chennai, India. Methods: The sample consists of 851 males in Chennai, India who reported having injected drugs in the last month and were recruited through street outreach. Results: Results indicate a strong and consistent positive association between drug use stigma and HIV injection drug use risk behaviors. This association held across the injection behaviors of frequency of sharing needles, cookers, cotton filters, rinse water, pre-filled syringes and common drug solutions, even after controlling for acquiescence response bias, frequency of injection, and HIV/HCV serostatus. Conclusions: These findings suggest that future HIV prevention and harm reduction programs for injection drug users and service providers should address drug use stigma. © 2010.

PubMed | National Institute of Allergy and Infectious Diseases and Gaitonde Center for Research and Education
Type: Journal Article | Journal: The lancet. HIV | Year: 2016

HIV incidence is the best measure of treatment-programme effectiveness, but its measurement is difficult and expensive. The concept of community viral load as a modifiable driver of new HIV infections has attracted substantial attention. We set out to compare several measures of community viral load and antiretroviral therapy (ART) coverage as correlates of HIV incidence in high-risk populations.We analysed data from a sample of people who inject drugs and men who have sex with men, who were participants of the baseline assessment of a cluster-randomised trial in progress across 22 cities in India ( number NCT01686750). We recruited the study population by use of respondent-driven sampling and did the baseline assessment at 27 community-based sites (12 for men who have sex with men and 15 for people who inject drugs). We estimated HIV incidence with a multiassay algorithm and calculated five community-based measures of HIV control: mean log10 HIV RNA in participants with HIV in a community either engaged in care (in-care viral load), aware of their status but not necessarily in care (aware viral load), or all HIV-positive individuals whether they were aware, in care, or not (population viral load); participants with HIV in a community with HIV RNA more than 150 copies per mL (prevalence of viraemia); and the proportion of participants with HIV who self-reported ART use in the previous 30 days (population ART coverage). All participants were tested for HIV, with additional testing in HIV-positive individuals. We assessed correlations between the measures and HIV incidence with Spearman correlation coefficients and linear regression analysis.Between Oct 1, 2012, and Dec 19, 2013, we recruited 26,503 participants, 12,022 men who have sex with men and 14,481 people who inject drugs. Median incidence of HIV was 087% (IQR 040-117) in men who have sex with men and 143% (060-400) in people who inject drugs. Prevalence of viraemia was more strongly correlated with HIV incidence (correlation 081, 95% CI 062-091; p<00001) than all other measures, although correlation was significant with aware viral load (059, 027-079; p=0001), population viral load (051, 016-074; p=0007), and population ART coverage (-054, -076 to -020; p=0004). In-care viral load was not correlated with HIV incidence (029, -010 to 060; p=014). With regression analysis, we estimated that to reduce HIV incidence by 1 percentage point in a community, prevalence of viraemia would need to be reduced by 434%, and ART use in HIV-positive individuals would need to increase by 195%.Prevalence of viraemia had the strongest correlation with HIV incidence in this sample and might be a useful measure of the effectiveness of a treatment programme.US National Institutes of Health, Elton John AIDS Foundation.

PubMed | Hospital Nossa Senhora Of Conceicao, Asociacion Civil Impacta Salud y Educacion, Gaitonde Center for Research and Education, University of Johannesburg and 9 more.
Type: Journal Article | Journal: The Journal of infectious diseases | Year: 2016

A case-cohort analysis of human immunodeficiency virus (HIV)-infected individuals receiving antiretroviral therapy (ART) was performed within a multicountry randomized trial (PEARLS) to assess the prevalence of persistently elevated C-reactive protein (CRP) levels, based on serial measurements of CRP levels, and their association with HIV clinical failure. A persistently elevated CRP level in plasma (defined as 5 mg/L at both baseline and 24 weeks after ART initiation) was observed in 50 of 205 individuals (24%). A persistently elevated CRP level but not an elevated CRP level only at a single time point was independently associated with increased clinical failure, compared with a persistently low CRP level, despite achievement of virologic suppression. Serial monitoring of CRP levels could identify individuals who are at highest risk of HIV progression and may benefit from future adjunct antiinflammatory therapies.

Solomon S.S.,Johns Hopkins University | Solomon S.S.,Gaitonde Center for Research and Education | Solomon S.,Gaitonde Center for Research and Education
Indian Journal of Medical Research | Year: 2011

Over the past 30 years, several interventions have been identified to prevent HIV transmission from HIV-infected persons to uninfected persons in discordant relationships. Yet, transmissions continue to occur. Interventions such as voluntary counselling and testing, condom promotion and risk reduction counselling are very effective in preventing transmission among serodiscordant couples but are underutilized in India despite their widespread availability. New interventions such as pre-risk exposure prophylaxis and universal antiretroviral therapy (irrespective of CD4 count) have been newly identified but face several challenges that impede their widespread implementation in India. Discordant couples in India also face certain unique socio-cultural issues such as marital and fertility pressure. We briefly review the various interventions (existing and novel) available for persons in discordant relationships in India and socio-cultural issues faced by these individuals and make recommendations to maximize their implementation.

Loading Gaitonde Center for Research and Education collaborators
Loading Gaitonde Center for Research and Education collaborators