View clinical trials related to Virus Diseases.
Filter by:The purpose of this study is to investigate the immune responses associated with Epstein-Barr virus infections, and to find out the possible immunodeficiency that may be linked to severe Epstein-Barr virus infections.
In a multi-center study 200 patients co-infected with hepatitis C virus (HCV) and human immunodeficiency virus (HIV) will be treated with a fixed-dose combination pill combined of 400 mg sofosbuvir and 30, 60, or 90 mg of daclatasvir - depending on the particular antiretroviral treatment (ART) being used by the patient. The treatment duration will be 12 weeks for subjects without cirrhosis and 24 weeks for those with cirrhosis.
The main purpose of this study is to evaluate efficacy of 24 weeks of study treatment, in terms of changes in hepatitis B surface antigen (HBsAg) levels.
This study evaluates the positive and negative predictive value of E6/E7 mRNA expression for anal HSIL and its capacity to predict incident HSIL in HIV + MSM. We also analyse the cost-effectiveness of this new screening strategy. It is an ambispective study with 355 participants and a follow-up period of 2 to 5 years.
Up to 20% of all cancers may be associated with a bacterial or viral infection. In some instances, the infection may be one of the reasons why the cancer developed in the first place. One such example is infection with the human papilloma virus (HPV) and the development of cervical or oral cavity cancer. A viral infection that is chronic may not cause a person symptoms, and may be able to escape detection by a person's own immune system. One of the medications being studied in this clinical trial (Valproic acid) may be able to unmask a chronic viral infection from a person's own immune system, therefore making the virus susceptible to attack by the immune system. In this study Valproic acid is being combined with an immune therapy, Avelumab. Avelumab is an antibody that targets a person's own immune cells, or lymphocytes. Lymphocytes must be activated to fight infections or cancer, but after activation they are deactivated. Avelumab prevents the deactivation of a lymphocyte, in effect "turning off the off-switch." This leads to a re-energizing of a person's immune system, hopefully leading to an attack by the immune system on a person's cancer. Avelumab is known to be an effective treatment for a variety of cancers, although it has not yet been tested in all cancers. By combining Valproic acid, a treatment which targets the virus that contributed to the development of this type of cancer with Avelumab the investigators hope to enhance the ability of Avelumab to restore the body's own immune defense against the cancer.
The purpose of this study is to describe the safety, tolerability and immunogenicity of two doses of purified inactivated Zika virus vaccine (PIZV) given 28 days apart. Three different vaccine doses containing different protein concentrations (2, 5 or 10 microgram [mcg]) each, will be given as 2 dose schedule to flavivirus naive and primed healthy adults. Participants will be followed for 7 days post each dose for tolerability and up to 6 months post dose 2 for safety. Immunogenicity assessment will be performed at 28 days post each dose and 6 months post dose 2. In addition, the selected dose group and control group will be followed till 24 months post dose 2 for safety and persistence of immunity.
Randomized, open-label study in treatment naïve and treatment experienced, adolescence to determine the efficacy of Sofosbuvir 400mg/ledipasvir 90mg in treatment naïve and treatment-experienced adolescence. Hepatitis C virus (HCV) infection as measured by the proportion of subjects with sustained viral response 12 weeks after discontinuation of therapy (SVR12)
This study included two groups of premenopausal healthy obese women. Experimental group underwent a weight loss program involved a low calorie diet plus anti-obesity drugs and moderate physical activity and control group underwent an ad libitum diet. At baseline and after a 10-15% weight loss lymphocyte subgroups were analyzed and compared between two group.
The purpose of this study is to assess a trend for the prophylactic efficacy of a single dose of 1*10^11 virus particles (vp) of adenovirus serotype 26 respiratory syncytial virus pre-fusion F protein (Ad26.RSV.preF) administered intramuscularly to adults aged 18-50 years in the respiratory syncytial virus (RSV) challenge model in terms of reduction of nasal wash viral load compared to placebo.
The purpose of this study is to determine in hospitalized infants and children who are infected with respiratory syncytial virus (RSV) the dose-response relationship of multiple regimens of lumicitabine on antiviral activity based on nasal RSV shedding using quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR).