Human Immunodeficiency Virus (HIV) and Infertility Treatment
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Frequency and Implications of HIV Superinfection
Review Frequency and implications of HIV superinfection Andrew D Redd, Thomas C Quinn, Aaron A R Tobian* HIV superinfection occurs when an individual with HIV is infected with a new distinct HIV viral strain. Superinfection Published Online has been reported throughout the world, and studies have recorded incidence rates of 0–7∙7% per year. Use of next- May 31, 2013 generation sequencing has improved detection of superinfection, which can be transmitted by injecting drug use and http://dx.doi.org/10.1016/ S1473-3099(13)70066-5 sexual intercourse. Superinfection might have incidence rates comparable to those of initial HIV infection. Clinicians Division of Intramural should encourage safe sexual and injecting drug use practices for HIV-infected patients because superinfection has Research, National Institute of detrimental eff ects on clinical outcomes and could pose a concern for large-scale antiretroviral treatment plans. The Allergy and Infectious Diseases, occurrence of superinfection has implications for vaccine research, since it seems initial HIV infection is not fully National Institutes of Health, protective against a subsequent infection. Additional collaborative research could benefi t care of patients and inform Bethesda, MD, USA (A D Redd PhD, future vaccine design. Prof T C Quinn MD); Department of Pathology, Introduction Detection of HIV superinfection School of Medicine, Johns HIV superinfection occurs when an individual with The investigators in initial studies that identifi ed indi- Hopkins University, Baltimore, MD (A A R Tobian MD) HIV becomes infected with a new, phylogenetically distinct viduals dually infected with HIV-1 and HIV-2 used Correspondence to: viral HIV strain. -
Coevolution of HIV-1 and Broadly Neutralizing Antibodies
HHS Public Access Author manuscript Author ManuscriptAuthor Manuscript Author Curr Opin Manuscript Author HIV AIDS. Author Manuscript Author manuscript; available in PMC 2020 October 13. Published in final edited form as: Curr Opin HIV AIDS. 2019 July ; 14(4): 286–293. doi:10.1097/COH.0000000000000550. Coevolution of HIV-1 and broadly neutralizing antibodies Nicole A. Doria-Rosea, Elise Landaisb aVaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland bIAVI Neutralizing Antibody Center, Immunology and Microbiology Department, The Scripps Research Institute, La Jolla, California, USA Abstract Purpose of review—Exploring the molecular details of the coevolution of HIV-1 Envelope with broadly neutralizing antibodies (bNAbs) in infected individuals over time provides insights for vaccine design. Since mid-2017, the number of individuals described in such publications has nearly tripled. New publications have extended such studies to new epitopes on Env and provided more detail on previously known sites. Recent findings—Studies of two donors – one of them an infant, the other with three lineages targeting the same site – has deepened our understanding of V3-glycan-directed lineages. A V2- apex-directed lineage showed remarkable similarity to a lineage from a previously described donor, revealing general principles for this class of bNAbs. Understanding development of CD4 binding site antibodies has been enriched by the study of a VRC01-class lineage. Finally, the membrane-proximal external region is a new addition to the set of epitopes studied in this manner, with early development events explored in a study of three lineages from a single donor. -
Lessons from Viral Superinfections for HIV-1 Vaccine Design Stephanie Jost* Ragon Institute of MGH, MIT and Harvard, USA
C S & lini ID ca A l f R o e l s Journal of a e n a r r Jost, J AIDS Clinic Res 2013, S3 c u h o J DOI: 10.4172/2155-6113.S3-005 ISSN: 2155-6113 AIDS & Clinical Research Review Article Open Access Lessons from Viral Superinfections for HIV-1 Vaccine Design Stephanie Jost* Ragon Institute of MGH, MIT and Harvard, USA Abstract Superinfection refers to a second viral infection in the context of a pre-existing adaptive immune response to prior infection with a viral strain that has not been cleared, the two viruses being genetically distinct yet belonging to the same genus. As such, this phenomenon provides unique settings to gain insights into the immune correlates of protection against HIV-1. The focus of this review is to discuss the current knowledge about immune responses to HIV-1 and to other viruses that are associated with partial or complete immunity to superinfection, or lack thereof, and how that could be applied to future HIV-1 vaccine strategies. Keywords: HIV-1; Superinfection; Vaccine; Co-infection; Viral HIV-1 Rapid Evolution and Diversity: A Challenge for infection; Recombination Vaccine Design Introduction The extremely rapid evolution of the virus probably largely contributed to the failure or limited success of HIV-1 vaccines evaluated The human immunodeficiency virus type 1 (HIV-1) affects 34 to date [5]. HIV-1’s extensive genetic diversity was first brought to light million adults and children worldwide, and the ongoing spread of the around 1983, when full-length sequences of the virus became available, epidemic resulted in about 2.5 million new infections and 1.7 million and has since then expanded [6]. -
Using Knowledge of HIV Status As an HIV Prevention Strategy
From Prevention in Focus, Spring 2014 Unknown, negative or positive? Using knowledge of HIV status as an HIV prevention strategy By James Wilton and Tim Rogers As front-line workers in HIV prevention, it is important to understand what prevention strategies clients are using and how they understand the risks associated with them. A common HIV prevention strategy used by gay men and other men who have sex with men (MSM) is known as “serosorting” and involves limiting all – or just “high-risk” – sexual activities to partners who have the same HIV status. For example, an HIV-negative person may choose to only have condomless sex with other people who are HIV negative or an HIV-positive person may choose to only have condomless sex with other people who are HIV positive. This strategy is used in the context of different types of relationships, such as stable, casual, monogamous and non-monogamous relationships. This article focuses on how often serosorting is used, how well it works, and how knowledge of HIV status can be effectively used as a prevention strategy. The article only covers serosorting strategies that are based on individuals identifying themselves or others as HIV-positive or HIV-negative. It does not address other factors, such as viral load or use of other HIV prevention strategies, which play a very important role in assessing HIV risk. For information on these other strategies, please see the resource list at the end of the article. How common is serosorting? Serosorting is quite common among MSM in Canada and other parts of the world. -
Strategies to Prevent HIV Transmission to Serodiscordant Couples Estratégias De Prevenção Da Transmissão Do HIV Para Casais Sorodiscordantes
DOI: 10.1590/1809-4503201500050013 ORIGINAL ARTICLE / ARTIGO ORIGINAL Strategies to prevent HIV transmission to serodiscordant couples Estratégias de prevenção da transmissão do HIV para casais sorodiscordantes Ronaldo Campos HallalI, Juan Carlos RaxachII, Nêmora Tregnago BarcellosIII, Ivia MaksudIV ABSTRACT: Introduction: The use antiretroviral reduces the sexual transmission of HIV, expanding interventions for serodiscordant couples. Objective: This article aims to review the use of antiretroviral and other prevention interventions among serodiscordant couples and to analyze its use in Brazil. Methods: A retrospective review was performed through the MEDLINE database and bases included in the Biblioteca Virtual em Saúde. Results: The articles recovered exhibit four main strategies: (1) condom; (2) reduction of risks in sexual practices; (3) use of antiretrovirals, particularly early initiation of antiretroviral therapy (TASP) and pre-exposure prophylaxis (PrEP); (4) risk reduction in reproduction. Discussion: TASP is highly effective in reducing sexual transmission, PrEP was tested in serodiscordant couples and both reduce the sexual transmission risk in different sexual practices, enabling individualized prevention strategies. Conclusions: When used in combination, antiretrovirals and sexual practices with condoms offer greater efficacy than any single strategy. The combined use of new and old strategies allows us to build a prevention policy for all. Keywords: Acquired immunodeficiency syndrome. Health care. Sexuality. HIV seroposivity. Health services. Health public policy. ISanta Casa de Porto Alegre – Porto Alegre (RS), Brasil. IIAssociação Brasileira Interdisciplinar de AIDS – Rio de Janeiro (RJ), Brasil. IIIGraduate Program in Public Health, Universidade do Vale do Rio dos Sinos; Hospital Sanatório Partenon; State Secretaria of Health – Porto Alegre (RS), Brasil. IVInstituto Fernandes Figueira, Fundação Oswaldo Cruz – Rio de Janeiro (RJ), Brasil. -
Prevalence of Hiv-Discordant Couples in Sub-Saharan Africa
PREVALENCE OF HIV-DISCORDANT COUPLES IN SUB-SAHARAN AFRICA: WHAT HAS CHANGED OVER THE LAST DECADE? Danielle R. Denardo INTRODUCTION As the HIV-1 epidemic in sub-Saharan Africa (SSA) has matured, the role of stable heterosexual couples (married or cohabitating) as a source of new infections has received more attention, in terms of both research and policy. Recent research has suggested that almost two-thirds of all new HIV infections in SSA occur among stable couples [1]. HIV-serodiscordant couples, stable couples in which only one partner is HIV-positive, are of particular concern given that the HIV- negative partners live with a high risk of infection from within their primary sexual relationship [1-8]. These serodiscordant relationships also present a particular set of challenges for the adoption of preventative sexual behaviors, such as condom use, in that they do not reflect the “high-risk” sexual partners/behaviors (multiple partners, casual partners, pay for/receiving pay for sex) that have been the primary focus of HIV prevention campaigns and messages. Indeed, stable relationships have long been touted as a source of protection against HIV [9-13]. In addition, research in SSA (and many other parts of the world) has shown that navigating safe-sex is often difficult for men and especially for women within stable couples [11, 14-21]. Consistently low HIV testing rates for individuals and couples throughout SSA also mean that many serodiscordant couples are likely unaware of their HIV status both individually and as a couple [22, 23]. Although testing rates are low, studies have shown that HIV-discordant couples who do receive individual and couple-centered voluntary counseling and testing are much more likely to reduce their risk of transmission through the adoption of safe-sex practices and receipt 2 of services such as anti-retroviral treatment and pre-exposure prophylaxis, where available [4, 7, 9, 10, 24-28]. -
PREP ACCESS in EUROPE ©Mike Kear ©Mike
PrEP in Europe Initiative PREP ACCESS IN EUROPE ©Mike Kear ©Mike PrEP in Europe Initiative (PEI) ©Rémon van den Kommer ©Jasn ©PrEp NU- Rémon van den Kommer ©Mike Kear ©Mike 1 ©Natasha Valentino PrEP in Europe Initiative Table of Contents About the PrEP in Europe Initiative 3 Introduction 4 About this report 5 Clinical trials of PrEP conducted in Europe 6 Demonstration projects in Europe to date 7 European-wide guidelines on PrEP 8 National-level guidelines and recommendations 8 European surveys of PrEP use 10 PrEP in England 12 Prescribing of Truvada® off-label 13 “DIY PrEP”: Informal PrEP use 14 Conclusion and recommendations 17 Photo Credits Mike Kear - Jasn - PrEPnu NL, Rémon van den Kommer - BCN Checkpoint - Miran Solinc, SKUC Dylan Lee - NAT Portugal - NAT España Graphic Design www.altitude.design.be 2 PrEP in Europe Initiative About the PrEP in Europe Initiative The PrEP in Europe Initiative (PEI) is a new initiative, a coalition of European organisations and activists concerned with HIV prevention and specifically with ensuring access to PrEP (pre- exposure prophylaxis) among people at high risk of HIV. Our mission is threefold: to disseminate up-to-date information on PrEP access in Europe; to influence policymakers and health funders to adopt PrEP in their countries; and to support organisations, groups and individuals advocating for PrEP in their own countries and communities. It is run by a steering committee of pan-European advocacy organisations including AVAC, NAM/ aidsmap, EATG, AIDS Action Europe, the National AIDS Trust and AIDES. PEI is in the process of establishing a permanent secretariat and website, and it has its own social media page on Facebook.1 ©Jasn ©NAT Portugal ©NAT ©Mike Kear ©Mike Kear © BCN Checkpoint ©NAT 1 www.facebook.com/groups/PrEPinEurope/ 3 PrEP in Europe Initiative Introduction PrEP (pre-exposure prophylaxis) refers to the use of antiretroviral medication before exposure (daily or intermittently) by people at risk of HIV to prevent them from acquiring HIV. -
Modelling the Role of Amelioration and Drug Lords on Drug Epidemics and the Impact of Substance Abuse on the Dynamics of HIV/AIDS
Modelling the Role of Amelioration and Drug Lords on Drug Epidemics and the Impact of Substance Abuse on the Dynamics of HIV/AIDS by Hatson John Boscoh Njagarah Thesis presented in partial fulfilment of the academic requirements for the degree of Master of Science at the University of Stellenbosch Supervisor: Dr Nyabadza Farai (University of Stellenbosch) December 2011 Stellenbosch University http://scholar.sun.ac.za Declaration By submitting this thesis/dissertation electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellen- bosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. November 21, 2011 - ---------------------------- ----------------------- Hatson John Boscoh Njagarah Date Copyright © 2011 Stellenbosch University All rights reserved. Stellenbosch University http://scholar.sun.ac.za i Abstract Substance abuse is an imminent danger on the health of both substance users and non- users. In general, abuse of psychoactive substances is associated with high risk behaviour, mortality and morbidity. The drug use cycle involves inextricably intertwined variants such as production, trading and usage of both licit and illicit addictive substances. The dynamics of substance use involve initiation, addiction, rehabilitation/treatment and quit- ting/recovery. In response to supply and abuse of monster drugs, control strategies such as law enforcement and rehabilitation have been stepped up to reduce access to drugs by targeting drug kingpins and harm reduction respectively. In this thesis, we model the fac- tors affecting the prevalence of substance abuse, the effect of drug lords on the prevalence of substance abuse, and the impact of substance abuse on the prevalence of HIV/AIDS. -
HIV and Human Coronavirus Coinfections: a Historical Perspective
viruses Review HIV and Human Coronavirus Coinfections: A Historical Perspective Palesa Makoti and Burtram C. Fielding * Molecular Biology and Virology Research Laboratory, Department of Medical Biosciences, University of the Western Cape, Cape Town 7535, South Africa; [email protected] * Correspondence: bfi[email protected]; Tel.: +27-21-959-2949 Received: 21 May 2020; Accepted: 2 August 2020; Published: 26 August 2020 Abstract: Seven human coronaviruses (hCoVs) are known to infect humans. The most recent one, SARS-CoV-2, was isolated and identified in January 2020 from a patient presenting with severe respiratory illness in Wuhan, China. Even though viral coinfections have the potential to influence the resultant disease pattern in the host, very few studies have looked at the disease outcomes in patients infected with both HIV and hCoVs. Groups are now reporting that even though HIV-positive patients can be infected with hCoVs, the likelihood of developing severe CoV-related diseases in these patients is often similar to what is seen in the general population. This review aimed to summarize the current knowledge of coinfections reported for HIV and hCoVs. Moreover, based on the available data, this review aimed to theorize why HIV-positive patients do not frequently develop severe CoV-related diseases. Keywords: coronaviruses; HIV; COVID-19; SARS-CoV-2; MERS-CoV; immunosuppression; immune response; coinfection 1. Introduction With the rapid advancement of molecular diagnostic tools, our understanding of the etiological agents of respiratory tract infections (RTIs) has advanced rapidly [1]. Researchers now know that lower respiratory tract infections (LRTIs)—caused by viruses—are not restricted to the usual suspects, such as respiratory syncytial virus (RSV), parainfluenza viruses (PIVs), adenovirus, human rhinoviruses (HRVs) and influenza viruses. -
Resilience, Syndemic Factors, and Serosorting Behaviors Among HIV-Positive and HIV-Negative Substance-Using MSM Steven P
AIDS Education and Prevention, 24(3), 193–205, 2012 © 2012 The Guilford Press Resilience, syndemic factors, and serosorting behaviors KurTz et al. RESILIENCE, SYNDEMIC FACTORS, AND SEROSORTING BEHAVIORS AMONG HIV-POSITIVE AND HIV-NEGATIVE SUBSTANCE-USING MSM Steven P. Kurtz, Mance E. Buttram, Hilary L. Surratt, and Ronald D. Stall Serosorting is commonly employed by MSM to reduce HIV risk. We hypothesize that MSM perceive serosorting to be effective, and that serosorting is predicted by resilience and inversely related to syndemic characteristics. Surveys included 504 substance-using MSM. Logistic regres- sion models examined syndemic and resilience predictors of serosorting, separately by serostatus. For HIV-positive men, positive coping behaviors (P = .015) and coping self-efficacy (P = .014) predicted higher odds, and cognitive escape behaviors (P = .003) lower odds, of serosorting. For HIV- negative men, social engagement (P = .03) and coping self-efficacy (P = .01) predicted higher odds, and severe mental distress (P = .001), victimization history (P = .007) and cognitive escape behaviors (P = .006) lower odds, of serosorting. HIV-negative serosorters reported lower perceptions of risk for infection than non-serosorters (P < .000). Although high risk HIV-negative men may perceive serosorting to be effective, their high rates of UAI and partner change render this an ineffective risk reduction approach. Relevant public health messages are urgently needed. The disproportionate impact of HIV infection among men who have sex with men (MSM) has been well documented over the past three decades (Wolitski, Valiserri, & Stall 2008). Current research among urban MSM emphasizes syndemic theory as a framework for understanding the production of health disparities (Bruce, Harper, & Adolescent Medicine Trials Network for HIV/AIDS, 2011; Stall, Friedman, & Catania, 2008). -
HIV/AIDS Programme Strengthening Health Services to Fight HIV/AIDS
HIV/AIDS Programme Strengthening health services to fight HIV/AIDS ESSENTIAL PREVENTION AND CARE INTERVENTIONS FOR ADULTS AND ADOLESCENTS LIVING WITH HIV IN RESOURCE-LIMITED SETTINGS WHO Library Cataloguing-in-Publication Data Essential prevention and care interventions for adults and adolescents living with HIV in resource-limited settings / coordinated by Kevin O’Reilly. 1.HIV infections - prevention and control. 2.HIV infections - therapy. 3.HIV infections - complications. 4.Developing countries. I.World Health Organization. II.Boothroyd, Jim. ISBN 978 92 4 159670 1 (NLM classification: WC 503.5) © World Health Organization 2008 All rights reserved. Publications of the World Health Organization can be obtained from WHO Press, World Health Organization, 20 Avenue Appia, 1211 Geneva 27, Switzerland (tel.: +41 22 791 3264; fax: +41 22 791 4857; e-mail: [email protected]). Requests for permission to reproduce or translate WHO publications – whether for sale or for noncommercial distribution – should be addressed to WHO Press, at the above address (fax: +41 22 791 4806; e-mail: [email protected]). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. The mention of specific companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. -
HIV Status and Gender: a Brief Report from Heterosexual Couples in Thailand
UCLA UCLA Previously Published Works Title HIV status and gender: a brief report from heterosexual couples in Thailand. Permalink https://escholarship.org/uc/item/0906j616 Journal Women & health, 52(5) ISSN 0363-0242 Authors Li, Li Liang, Li-Jung Lee, Sung-Jae et al. Publication Date 2012 DOI 10.1080/03630242.2012.687442 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Women & Health,52:472–484,2012 Copyright © Taylor & Francis Group, LLC ISSN: 0363-0242 print/1541-0331 online DOI: 10.1080/03630242.2012.687442 HIV Status and Gender: A Brief Report from Heterosexual Couples in Thailand LI LI, PhD, LI–JUNG LIANG, PhD, SUNG–JAE LEE, PhD, and SHU C. FARMER, PhD Semel Institute Center for Community Health, University of California, Los Angeles, California, USA Although the impact of HIV falls on both partners of a married couple, the burden of stress may not be necessarily shared evenly. The researchers in this study examined the relations among HIV status, gender, and depressive symptoms among 152 married or cohabitating couples living with HIV in the northern and north- eastern regions of Thailand. Depressive symptoms were assessed using a 15-item depressive symptom screening test that was devel- oped and used previously in Thailand. Among the 152 couples, 59% were couples in which both members were people living with HIV (seroconcordant; both people living with HIV couples), 28% had only female members with HIV (serodiscordant; females liv- ing with HIV couples), and 13% had only male members with HIV (serodiscordant; males living with HIV couples). The prevalence of depressive symptoms between seroconcordant and serodiscordant groups was similar.