Active clinical trials for "Acquired Immunodeficiency Syndrome"

The purpose of this study is to see if an HIV vaccine, AIDSVAX B/B, can protect adults who are at risk from becoming infected with HIV. Patients who become infected despite immunization will be studied to see if receiving the vaccine before becoming infected will help keep HIV levels (viral load) low.

The purpose of this study is to examine the efficacy of a brief culturally appropriate and theory-based parental communication intervention designed to improve parent-adolescent sexual communication and reduce adolescent sexual risk behavior.

Background: Human papilloma virus (HPV) is a common sexually transmitted disease. There are more than 100 different HPV types, and both males and females can get HPV infection. Most people do not have any symptoms when they become infected and are able to get rid of the infection on their own. However, they can still become re-infected with the same or a different HPV type, and in some people HPV infection persists. Persistent HPV infection is associated with the development of precancerous lesions and cancer. HPV types are classified as either high risk or low risk based on whether their persistence will lead to cancer. Patients who have suppressed immune systems are at a higher risk for HPV-related complications. They are more likely to contract multiple HPV types and have more persistent infection that can lead to precancerous lesions or cancer, which are then difficult to treat and often recur. A recently approved vaccine for HPV induces immunity to HPV 6, 11, 16, and 18. It was shown to be highly effective in preventing infection with these HPV types, and is approved for use in females 9 to 26 years of age. However, much less is known about the vaccine s ability to induce immunity in males or individuals with suppressed immune systems. Objectives: - To investigate whether the HPV vaccine is safe to give and able to induce immunity in both female and male adolescents and young adults with HIV infection compared to healthy, HIV-negative persons of the same age. Eligibility: - Males and females, 12 to 26 years of age, divided into three groups: (1) Healthy and HIV-negative, (2) HIV-positive and on antiretroviral therapy, and (3) HIV-positive and not on antiretroviral therapy. Design: Before beginning vaccination, participants will have a complete physical examination and blood drawn for routine blood tests, special tests of the immune system, antibody tests, and an HIV test. HPV vaccine will be given by injection into the muscle at 0, 2, and 6 months, according to the standard vaccination schedule. Patients with HIV infection will be monitored for a week following the first injection to test the level of HIV in the blood 3 days and 5 days after the first injection. Participants will also be asked to fill out a 10- to 15-minute Web-based survey about awareness, health behaviors, and personal choices related to risk factors for HIV, HPV, and other sexually transmitted diseases. Participants are not required to fill out the survey to receive the vaccine. The total duration of the study is 4 years. During the first year of the study, participants will return for six additional 1-day visits at months 1, 2, 3, 6, 7, and 12. Participants will return for 1-day visits every 6 months for the remaining 3 years.

Confirm the safety of maraviroc when used as a component of combination antiretroviral therapy in HIV and Hepatitis co-infected patients.

This phase 2 study will evaluate the safety, immunogenicity and optimal timing of two injections at three dose levels of the tgAAC09 vaccine in healthy volunteers. Study volunteers will receive two intramuscular injections of tgAAC09 or placebo at Months 0 and 6 (groups A, C, E and G) or at Months 0 and 12 (groups B, D and F) and be followed for a total of 18 months following the first injection with the exception of group G in which volunteers will be followed for 12 months after the first injection (6 months after the second injection). This study will explore whether boosting is possible, and compare a shorter and more practical six-month time interval with a twelve-month time interval.

Infection with human papillomavirus (HPV) has been clearly established as the central cause of cervical cancer. This Phase IV, observer-blind study is designed to evaluate the safety and immunogenicity of Cervarix in HIV infected females aged 15 to 25 years as compared to Merck's HPV vaccine (Gardasil). For comparative purposes, a group of HIV negative females will also be evaluated. All subjects will receive the HPV vaccine (either Cervarix or Gardasil) according to a three-dose schedule (Day 0, Week 6, Month 6).

The purpose of this study is to determine whether dapivirine gel 4759 is safe for daily use by healthy women in Kenya, Malawi, Rwanda, South Africa and Tanzania.

This study will evaluate the effectiveness of Stepping Stones, an HIV-prevention education program, versus a brief HIV-focused intervention, in improving sexual health and preventing HIV infection in young residents of rural South African communities.

This study will evaluate the effectiveness of a single specialized pre-test counseling session in reducing HIV infection risk behavior in men who are not HIV infected.

To evaluate the safety of a fixed antigen dose with an increasing dose of adjuvant (MTP-PE/MF59, a substance to enhance the immune response to vaccine) in volunteers. To evaluate local and systemic reactions (Part A). To determine the safety and immunogenicity of Env 2-3 in combination with MTP-PE/MF59 in volunteers (Part B). The vaccine Env 2-3 is created from one of the viral proteins that make up HIV called envelope glycoprotein gp120. A problem with many immunogens, including candidate HIV vaccines, is that they may evoke relatively weak immune responses, particularly in humans and in nonhuman primates. Thus, there is considerable interest in the development of "adjuvants" (substances that augment immune responses to vaccines). MTP-PE/MF59 is an adjuvant that appears to be particularly promising, and is selected for the studies with this HIV vaccine candidate.