View clinical trials related to Infection.
Filter by:The main goal of this study is to find out how the immune system responds to a specific type of HIV infection, known as C HIV-1, in order to develop a vaccine against this type of infection. The study involves Southern African populations. The HIV-1 virus changes rapidly and many different subtypes have been found. In South Africa, limited data have suggested Subtype C HIV-1 is the most common. This study strives to verify the most common subtype and also look at genetic differences and immune responses among newly infected individuals. Results will aid in the development of vaccines specific for certain geographical areas.
The purpose of this study is to look at the effectiveness of combination anti-HIV drug therapy (with protease inhibitors [PIs] or without) in patients with early HIV infections. This study also looks at whether a drug called interleukin-2 (IL-2) can boost the immune system of these patients. Doctors are not sure which anti-HIV drug combination is best to use in patients who have early HIV infection and have never received anti-HIV treatment. PIs are anti-HIV drugs that decrease viral load (level of HIV in the blood). However, PIs can cause serious side effects in some patients. Doctors would like to know if a drug combination that does not contain a PI is just as good as one that contains PIs.
RATIONALE: Giving antibiotics may be effective in preventing or controlling early infection in patients receiving chemotherapy for solid tumors or lymphoma. It is not yet known if levofloxacin if effective in preventing infection. PURPOSE: Randomized phase III trial to determine the effectiveness of levofloxacin in preventing infection in patients receiving chemotherapy for solid tumors or lymphoma.
The purpose of this study is to understand how changes in the immune system of HIV-infected patients affect their risk for 3 serious infections: Pneumocystis carinii pneumonia (PCP), cytomegalovirus (CMV) retinitis, or CMV organ disease. The purpose also is to understand how anti-HIV medicines may improve the immune system in these patients. (This purpose reflects a change in the AIDS-related [opportunistic] infections studied.) Presently, HIV-infected patients who have had PCP or CMV disease stay on lifelong therapy to prevent the return of the disease. This study is trying to see if a special lab test can help identify which patients can stop this preventive therapy without having another episode of PCP or CMV organ disease. (This rationale reflects a change in the AIDS-related infections studied.)
To investigate the role of chronic infection as a risk factor for vascular disease in a study of Native Americans. The primary focus is on the two most common agents Chlamydia pneumoniae and cytomegalovirus with a secondary emphasis on Helicobacter pylori.
To examine markers of underlying chronic inflammation and infection as potential risk factors for future myocardial infarction (MI), stroke (CVA), and venous thromboembolism (VTE) in plasma samples collected at baseline from healthy participants in the Physicians' Health Study (PHS).
To examine mechanisms of individual differences in the progression of HIV infection in hemophiliacs.
To conduct a multicenter epidemiologic study of the human retroviruses HIV-1, HIV-2, HTLV-I, and HTLV-II in volunteer blood donors from areas of the United States that were reportedly at high and medium or low risk for HIV. Also, to determine the prevalence of retrovirus seropositivity in first time blood donors; and the rate of retrovirus seroconversion in repeat blood donors as a measure of incidence of infection; to ascertain risk factors for antibody-positive donors; to characterize the blood donor population by geographic location, age, sex, race/ethnicity, and donation history to permit analysis on prevalence, incidence, and risk factors; to identify recipients of retrovirus-positive blood units and conduct clinical and laboratory follow-up of these recipients; and to establish a blood specimen repository for long-term storage of specimens from study donors and recipients for future testing.
To determine the prevalence and natural history of pulmonary and cardiac complications associated with HIV infection in utero, in infancy, and during early childhood.
To evaluate the types, incidence, course, and outcome of pulmonary disorders in newly diagnosed cases of Acquired Immune Deficiency Syndrome (AIDS), newly diagnosed cases of AIDS-related complex (ARC) and newly diagnosed asymptomatic human immunodeficiency virus (HIV) infection.