Is the HCV-HIV co-infection prevalence amongst injecting drug users a marker for the level of sexual and injection related HIV transmission?

BACKGROUND: Amongst injecting drug users (IDUs), HIV is transmitted sexually and parenterally, but HCV is transmitted primarily parenterally. We assess and model the antibody prevalence of HCV amongst HIV-infected IDUs (denoted as HCV-HIV co-infection prevalence) and consider whether it proxies the degree of sexual HIV transmission amongst IDUs. METHODS: HIV, HCV and HCV-HIV co-infection prevalence data amongst IDU was reviewed. An HIV/HCV transmission model was adapted. Multivariate model uncertainty analyses determined whether the model's ability to replicate observed data trends required the inclusion of sexual HIV transmission. The correlation between the model's HCV-HIV co-infection prevalence and estimated proportion of HIV infections due to injecting was evaluated. RESULTS: The median HCV-HIV co-infection prevalence (prevalence of HCV amongst HIV-infected IDUs) was 90% across 195 estimates from 43 countries. High HCV-HIV co-infection prevalences (>80%) occur in most (75%) settings, but can be lower in settings with low HIV prevalence (0.75). The model without sexual HIV transmission reproduced some data trends but could not reproduce any epidemics with high HIV/HCV prevalence ratios (>0.85) or low HCV-HIV co-infection prevalence (10%. The model with sexual HIV transmission reproduced data trends more closely. The proportion of HIV infections due to injecting correlated with HCV-HIV co-infection prevalence; suggesting that up to 80/60/90%. CONCLUSION: Substantial sexual HIV transmission may occur in many IDU populations; HCV-HIV co-infection prevalence could signify its importance

Attitude of Counsellors towards undergoing HIV Voluntary Counselling and Testing in Ado-Odo/Ota, Nigeria

This study was an investigation into the attitude of counsellors who offer HIV pre and post counselling. Sixteen counsellors who offer HIV pre-post-test counselling were identified from the preliminary field work, of these, 9 counsellors who reported they had not presented for HIV/AIDS testing were identified and 7 eventually participated in the study. The participants were active counsellors, 27 through 46 years of age, who provided HIV pre-post-test counselling services. A purposive sampling technique was employed to select the participants. The non-scheduled structured interview was employed for data collection while the cross case method was used to analyze the data. The study found that the participants possessed negative attitude towards undergoing voluntary HIV/AIDS testing though they acknowledged the importance of HIV/AIDS test. The participants identified fear of being HIV/AIDS positive, lack of confidentiality and knowledge of HIV/AIDS as barriers to their undergoing HIV/AIDS test. Being counselled by a professional counsellor/ psychologist or someone living with HIV/AIDS, feeling too sick or being pregnant were highlighted as factors that may facilitate their undergoing HIV/AIDS test. It was also found that HIV/AIDS counsellors are as vulnerable to HIV/AIDS as the general population. Counsellors who by their training or job schedule encourage others to undergo HIV test were themselves unwilling to test for HIV. In conclusion, counsellors are advised to undergo voluntary HIV/AIDS test. Key words: HIV/AIDS counsellors, attitude, HIV/AIDS VCT, interview, confidentiality

Gender Differences in Depressive Symptoms Among HIV-Positive Concordant and Discordant Heterosexual Couples in China.

HIV seropositive individuals and their heterosexual partners/spouses, either seropositive or seronegative, are facing several mental health challenges. The objective of this study was to examine gender differences in depressive symptoms among HIV-positive concordant and HIV-discordant couples. We identified heterosexual couples from participants of a randomized controlled trial conducted in Anhui province, China. A total of 265 couples, comprising 129 HIV+ male/HIV- female couples, 98 HIV- male/HIV+ female couples, and 38 HIV-positive concordant couples, were included in the analyses. We collected data using the computer-assisted personal interview method. We used a linear mixed-effects regression model to assess whether gender differences in depressive symptoms varied across couple types. HIV-positive women reported a significantly higher level of depressive symptoms than their partners/spouses. HIV-positive women with HIV-positive partners had higher depressive symptoms than those with HIV-negative partners, whereas HIV-positive men reported similar levels of depressive symptoms regardless of their partners' serostatus. Among the concordant couples, those with the highest annual family income showed the greatest gender differences in depressive symptoms. We suggest that family interventions should be gender- and couple-type specific and that mental health counseling is warranted not only for HIV-positive women but also for HIV-negative women in an HIV-affected relationship

Getting to Zero HIV Cases San Francisco: Reconceptualizing Housing as HIV Prevention and HIV Treatment

The City and County of San Francisco, originallyground zero for the HIV epidemic in the United States, is redefining public health HIV interventions, potentially positioning San Francisco as one of the first major metropolitan cities in the world to reach zero HIV infectioncases, zero HIV-related deaths, and zero HIV-related stigma. As innovative as the Getting to Zero campaign appears to be, it fails to formally incorporate and respond to a fundamental matter pertinent to HIV prevention, HIV treatment, and San Francisco: housing. This research explores service gaps present in Getting to Zero byinvestigating the relationship between class, race, and HIV, specifically by emphasizing the role housing (or lackof housing) creates in shaping health outcomes related to HIV

Efficient Identification of HIV Serodiscordant Couples by Existing HIV Testing Programs in South Brazil.

ObjectiveTo examine the feasibility of identifying HIV negative at risk individuals in HIV serodiscordant couples, during voluntary HIV testing in South Brazil.MethodsWe surveyed HIV testers at 4 public testing sites in Rio Grande do Sul. We obtained information on risk behaviors and sexual partnerships. HIV testing and testing for recent infection were performed; HIV prevalence and risk behaviors were assessed among subjects who reported having a steady partner who was HIV positive (serodiscordant group) and compared with the general testing population.ResultsAmong 3100 patients, 490 (15.8%) reported being in a steady relationship with an HIV positive partner. New HIV infections were diagnosed in 23% of the serodiscordant group (vs. 13% in the general population, p = 0.01); among newly positive subjects, recent HIV infections were more frequent (23/86, 26.7%) among testers with positive partners than among the general testing group (52/334; 15.6%; p = 0.016). Less than half of the serodiscordant testers reported having used a condom during the last sexual intercourse with their HIV-positive partner. Participants with inconsistent condom use with steady partner were four times more likely to test positive for HIV compared to those who reported always using condoms with the steady partner (OR: 4.2; 95% CI: 2.3 to 7.5).ConclusionIt is highly feasible to identify large numbers of HIV susceptible individuals who are in HIV serodiscordant relationships in South Brazil testing sites. Condom use within HIV serodiscordant couples is low in this setting, suggesting urgent need for biomedical prevention strategies to reduce HIV transmission

Modeling Anti-HIV-1 HSPC-Based Gene Therapy in Humanized Mice Previously Infected with HIV-1.

Investigations of anti-HIV-1 human hematopoietic stem/progenitor cell (HSPC)-based gene therapy have been performed by HIV-1 challenge after the engraftment of gene-modified HSPCs in humanized mouse models. However, the clinical application of gene therapy is to treat HIV-1-infected patients. Here, we developed a new method to investigate an anti-HIV-1 HSPC-based gene therapy in humanized mice previously infected with HIV-1. First, humanized mice were infected with HIV-1. When plasma viremia reached >107 copies/mL 3 weeks after HIV-1 infection, the mice were myeloablated with busulfan and transplanted with anti-HIV-1 gene-modified CD34+ HSPCs transduced with a lentiviral vector expressing two short hairpin RNAs (shRNAs) against CCR5 and HIV-1 long terminal repeat (LTR), along with human thymus tissue under the kidney capsule. Anti-HIV-1 vector-modified human CD34+ HSPCs successfully repopulated peripheral blood and lymphoid tissues in HIV-1 previously infected humanized mice. Anti-HIV-1 shRNA vector-modified CD4+ T lymphocytes showed selective advantage in HIV-1 previously infected humanized mice. This new method will be useful for investigations of anti-HIV-1 gene therapy when testing in a more clinically relevant experimental setting

HIV/AIDS and contraceptive method choice : demographic and socio-economic correlates of contraceptive method choice among HIV-positive women practising family planning in Kenya

Introduction: As the generalized HIV epidemic in specific settings of sub-Saharan Africa continues to evolve, there is need for evidence-based response to address emerging challenges, which include enabling the large number of women living with HIV make informed choices to achieve their reproductive goals. Objectives: This paper seeks to (i) examine the effect of HIV/AIDS on contraceptive method choice among women using contraceptives in Kenya; and (ii) identify correlates of contraceptive method choice among HIV-positive women practising family planning. Material and Methods: We apply multinomial Logistic regression models to a sample of 3190 sexually-active women of reproductive age using contraceptives from the 2003 and 2008 Kenya Demographic and Health Surveys to examine the effect of HIV/AIDS on contraceptive method choice. The analysis of correlates of method choice among HIV-positive women is based on a sample of 255 HIV-positive women using contraceptives and involves bivariate cross-tabulations with Chi-Square tests. Result: Overall association between HIV status and contraceptive method choice is consistent with expected patterns, with women who are HIV-positive being more than twice as likely to use condoms rather than hormonal contraceptives, compared to their counterparts of similar characteristics who are HIV-negative (p<0.05). Among women infected with HIV, those who were previously tested for HIV were more likely to use condoms and less likely to use hormonal methods (p<0.05) than those who had never been tested. The higher use of condoms by HIV-positive women is only evident among those who had previously been tested for HIV. Significant correlates of contraceptive method choice among HIV-positive women include parity, marital status, age group, education and ethnicity. Overall trends suggest a notable shift from use of hormonal methods to condoms by HIV-positive women, but predominant use of hormonal methods (60%) and low use of condoms (23%) by HIV-positive young women aged 15-24 practising family planning is of potential concern. Conclusion: The findings have important implications for family planning policies/programs targeting young women living with HIV and underscore the need to intensify efforts towards improved HIV testing coverage to enable HIV-positive women make informed reproductive choices