Active clinical trials for "HIV Infections"

This is Phase II of a three stage project whose overall goals are to develop viable community-based HIV prevention interventions and to form and maintain the necessary community collaborations to support such Adolescent Trials Network (ATN) research activities. This phase will describe specific locations within high-risk areas where youth, ages 12-24, spend time. HIV risk behaviors, social networking patterns and HIV prevalence among youth at these venues will be assessed by administering anonymous computerized interviews to eligible and willing youth. This information will be shared with community partners during scheduled working group meetings.

This study is being conducted to assess the safety and tolerability of an oral liquid solution of Sustiva for antiretroviral therapy-naive or therapy-experienced HIV-1 infected children between the ages of 3-16 who are failing or intolerant of their current antiretroviral regimen and who are unable to swallow Sustiva capsules.

This study will evaluate a test designed to measure immune system responses to HIV and HIV vaccines.

The purpose of this clinical research study is to provide atazanavir to patients infected with human immunodeficiency virus (HIV) whose antiviral medications are no longer working to control HIV activity within the body and who are unable to create a new treatment regimen using other available anti-HIV drugs, because of either side effects or treatment failure previously taken. The safety of this treatment will also be studied.

The purpose of this study is to find out if HIV-infected pregnant women taking anti-HIV drugs have an increased amount of HIV in their blood (viral load) after having the baby. The purpose of A5153s, a substudy of A5150, is to characterize two anti-HIV drugs (nelfinavir [NFV] and lopinavir/ritonavir [LPV/r]) in HIV-infected women during pregnancy and after childbirth. Sometimes pregnant women have an increase in their HIV viral load after their baby is born. This study will try to find out how often this happens. It will also examine possible reasons why the increase in viral load occurs.

This screening study will evaluate potential study volunteers with HIV infection to see if they are suitable candidates for trials of experimental vaccines against HIV (therapeutic), and against other infections (preventive). Preventive vaccines against other infections. Preventive vaccines prevent a person from getting a disease. Preventive vaccines have been developed for many diseases, including, for example, whooping cough, measles, mumps, influenza, and hepatitis B. Some preventive vaccines may also prevent a disease from taking hold if given immediately after infection, such as vaccines for rabies, smallpox and hepatitis. Therapeutic vaccines against HIV. Therapeutic vaccines are intended to treat someone who has already been infected, with the goal of controlling the disease or preventing it from causing severe illness. As yet, there are no therapeutic vaccines for any diseases. Vaccines against other infections. Vaccines to prevent other infections besides HIV may need to be tested separately in people with HIV infection because the immune system works differently when HIV infection is present. HIV-infected patients 18 years of age or older may be eligible for this screening study. Women who are pregnant or breast feeding may not participate. Participants will be screened with the following: A health history, including questions about sexual activity and drug use; Physical examination, including blood and urine tests; HIV testing to confirm HIV infection; Pregnancy test for premenopausal women; PPD test for tuberculosis for those who have not been tested in the previous 6 months. Candidates who meet the requirements for investigational vaccine studies will be invited to participate in a study. Those who do not begin a study within 1 month of the screening tests may need to repeat some tests for continued consideration. In addition, some studies require repeated measures of CD4 counts and viral load over a period of a few months.

The purpose of this study is to monitor patients who have recently been infected with HIV in order to learn how their immune systems respond to HIV infection and to study how the virus multiplies in their bodies. Patients who have been infected with HIV recently are considered to have acute, or early, HIV infection. During this period, viral load (level of HIV in the body) rises sharply to a high level at first but then decreases significantly on its own. Doctors are not sure why this decrease in viral load happens and how the body is able to accomplish this. In this study, patients with acute HIV infection will be monitored so that doctors can study their immune systems to try to learn more about this rise and fall in viral load.

To detect by Doppler echocardiography the incidence of cardiac abnormalities in HIV-positive patients in a prospective, longitudinal study.

The purpose of this study is to determine the best way to administer the candidate HIV vaccine, ALVAC HIV-1 (vCP205).

Subjects are healthy adult volunteers either at high risk for HIV infection or already known to be seropositive, who will donate blood for in vitro tests of T-cell function and in vitro responses to synthetic peptides corresponding to sequences from HIV proteins.