View clinical trials related to HIV Infections.
Filter by:Vaccination of HIV infected individuals with the sub-unit influenza vaccine is safe; however it induces only moderate immune responses and likewise is modest in its protection compared to HIV uninfected individuals. Based upon the available data, the South African Thoracic Society has provisionally recommended the use of influenza vaccine in HIV infected individuals with CD4+ counts of > 200/ml and viral loads of < 100 000 copies/ml.(Green R et al. In press, SAMJ). This proposal is however based upon recommendations made elsewhere with minimal level of evidence regarding its benefit, and no evidence from countries with a high prevalence of HIV. Very few HIV infected adults, however, actually do receive influenza vaccine in South Africa, partly because of the absence of compelling data regarding the burden of disease in Africa as well as lack of vaccine effectiveness and issues related to physician awareness and access to influenza vaccine in the public immunization program. The conflicting evidence, between developed countries and Africa, regarding the effectiveness of PPV highlight the drawbacks of extrapolating vaccine effectiveness data from developed countries to developing countries. Differences in the epidemiology of HIV between developed countries in which the prevalence of HIV is low to that of high-burden sub-Saharan African countries include: - differences in the mode of transmission of HIV and demographics of the infected population. - differences in standard of care, including access to prophylaxis against opportunistic infections and use of highly active anti-retroviral therapy (HAART) - differences in risk for disease from opportunistic pathogens, e.g. Mycobacterium tuberculosis, etc. These differences may all contribute to differences in the risk and severity of influenza illness among HIV infected adults from these communities as well as possibly responsiveness and effectiveness of vaccination. The investigators are conducting a double-blinded, placebo controlled randomized trial at the HIV treatment clinic at Helen Joseph Hospital to determine the effectiveness of influenza vaccination in HIV infected adults in South Africa. The significance of the findings from this study will help quantify the burden of influenza illness in African HIV infected adults, as well as assist in making more informed recommendations for the use of influenza vaccine in HIV infected adults and in guiding national policy for preparing for a future influenza virus-pandemic.
A randomized clinical trial evaluating the reduction of HIV risk behaviors and drug use when providing integrated behavioral drug and HIV risk reduction counseling (BDRC) along with methadone maintenance treatment in Wuhan, China
For participants with HIV taking either lopinavir or fosamprenavir who have elevated triglycerides, this trial will study the change in triglycerides after switching protease inhibitors.
In this study, the investigators will assess the population effectiveness of using routine HAART as a PMTCT strategy, through a community-based survey. The survey will be done in the catchment areas of four health clinics in rural Zambia both before and after giving routine ART in the clinics, so as to estimate population HIV-free survival among infants born in each target community. The investigators hypothesize that incorporation of routine ART into PMTCT will increase the HIV-free survival of exposed infants to 75%.
The investigators will enroll a cohort of HIV-infected pregnant women accessing PMTCT services, to better understand the incremental benefits (e.g. reduction in HIV transmission, improvements in HIV-free survival) and risks (e.g. drug toxicities) of the routine HAART strategy, in comparison to HIV-infected pregnant women accessing the Zambian Standard of Care services. The investigators will test the hypothesis that routine use of HAART produces significant reductions in HIV transmission rates, with only minimal side effects.
CCTG 589 is a randomized, open-label, pilot study comparing the efficacy, safety and tolerability of RAL plus LPV/r to EFV plus TDF/FTC in HIV-infected, treatment-naïve subjects. Subjects will be ineligible if they have any evidence of drug resistant virus in the past or at the time of screening (if never previously tested). Those who are found to be eligible will be randomized 1:1 to initiate either LPV/r (400/100 mg) plus RAL (400mg), both given twice-daily, or fixed dose combination of EFV (600 mg), TDF (300 mg) and FTC (200 mg) given as once-daily Atripla® for 48 weeks. Hypotheses 1. The novel nucleoside-sparing combination of LPV/r + RAL will have a faster phase 1 viral decay rate compared to standard-of-care therapy with EFV/TDF/FTC in antiretroviral-naïve patients. 1. Faster phase 1 viral decay dynamics will be associated with improved longer-term (week 48) viral suppression. 2. Faster phase 1 viral decay dynamics will be associated with accelerated early (Day 0-14) clearance of cell-associated HIV DNA. 3. Faster phase 1 viral decay dynamics will be associated with greater early (baseline to week 12) CD4+ T-cell recovery. 2. The LPV/r + RAL arm will have greater decreases in early (baseline to week 4) CD4/CD8 T-cell immune activation and apoptosis which will be associated with greater late (week 12 to week 48) CD4+ T-cell recovery. 3. Subjects treated with LPV/r + RAL arm will have smaller changes in total cholesterol and triglycerides from baseline than those receiving EFV/TDF/FTC.
A single center, open label, 48-week study of lopinavir/ritonavir in combination with raltegravir. 30 patients, both naïve and experienced, will be enrolled. 15 treatment naïve patients and 15 treatment experienced patients enrolled
The study is a randomized, open label, phase II clinical trial directed at evaluating the immunogenicity (as a primary end-point) and the safety (as a secondary end-point), of the recombinant HIV-1 Tat vaccine in HIV-1 infected adult subjects, anti-Tat antibody negative, HAART-treated with chronic suppressed HIV-1 infection, CD4+ T cell counts >= 200 cells/microliter, levels of plasma viremia < 50 copies/ml in the last 6 months prior to the screening and without a history of virologic rebound. The immunogenicity of 3 or 5 immunizations of the two different vaccine doses (7.5 and 30 micrograms) of the Tat vaccine has been evaluated.
This is a retrospective chart review of participants in raltegravir expanded access program and will compare virologic response in regimens not containing a protease inhibitor in the antiretroviral background regimen to regimens containing a protease inhibitor in the background regimen.
Men who have sex with men (MSM) account for the greatest burden of the HIV and Sexually Transmitted Infection (STI) epidemic in Peru. Current interventions that promote early identification and treatment of these diseases target a limited number of this population because they rely solely on peer education. To assess the use of the Internet as an alternative tool to reach this population the investigators propose to conduct an online randomized controlled trial to compare the effect of HIV-testing motivational videos versus standard public health text, both offered through gay websites. The methodology the investigators will use is divided in: (1) the development period, where the investigators will select gay websites for banner advertisement, create and refine effective recruitment messages and design the online survey and the video-based intervention (2) the intervention period, where participants who meet the eligibility criteria will be randomized into a video or a standard public health text. The videos will be customized for three audiences based on self-identification: gay, non-gay and trans and will be framed within the health-belief model and the stages of change theory (3) in the outcome evaluation period we will compare the 'intentions to get tested' and 'time to HIV testing at the clinic' among MSM of each of the trial arms. If the Internet is an effective venue to reach MSM for HIV testing, Peruvian health programs that target this population may start considering the delivery of web-based interventions and other online prevention services to this under served and hard-to-reach population.