Active clinical trials for "Hepatitis A"

The purpose of this study is to explore whether silibinin plus ribavirin with/without peg-interferon can be more effective than the peg-interferon plus ribavirin based standard of care (SoC) in the treatment of patients infected with hepatitis C virus genotype 4.

Conduct a randomized controlled trial (RCT) to test the hypothesis that offering client-centered HIV counseling and testing (HCT) to blood donor candidates will reduce the risk of HIV contamination in the blood supply and also increase appropriate referrals to preventive and care services to persons in need in São Paulo, Brazil.

The purpose of this study is to assess the long-term persistence of immunity to hepatitis B in adolescents aged 15-16 years who were vaccinated with Engerix™-B Kinder in infancy. The study will also assess the immune response to a challenge dose of Engerix™-B Kinder in these subjects.

The goal of this study is to evaluate the effectiveness of a brief, computerized behavioral intervention for promoting screening for hepatitis C and reducing risky behavior for people who inject drugs (PWID).

Hepatitis C is caused by the hepatitis C virus (HCV) that causes inflammation of the liver that can lead to diminished liver function or liver failure. The number of chronically infected persons worldwide is estimated to be about 170 million that is 2.35% of the world population. Most people infected with the hepatitis C virus have no symptoms of the disease until the advanced stages of liver disease have occurred, which may take several years. The long-term impact of HCV infection is highly variable, from minimal changes to extensive fibrosis and cirrhosis with or without hepatocellular carcinoma (HCC). Advanced liver disease (ALD) can lead to significant clinical and economic consequences, including liver transplantation. HCV can reduce life expectancy and impair quality of life. HCV-related complications as well as the highly debilitating effects on patients represent a significant item of expenditure for the National Health Service. Because of the latency of infection, numerous country-specific population analyses suggest that HCV will cause an increasing number of liver-related deaths despite the dramatic drop in incidence and prevalence. These deaths will be related to prevalent HCV infection especially during and after World War II through indiscreet and widespread treatment with intravenous injection using contaminated syringes, needles and remunerated blood donors. Eradicating HCV infection can prevent the complications of HCV-related liver and extrahepatic diseases, including liver necroinflammation, fibrosis, cirrhosis, HCC, and death. Newly discovered hepatitis C virus (HCV) therapy with direct acting antiviral agents (DAA) like Simeprevir, sofosbuvir open a new chapter in the treatment of chronic hepatitis C. Those new treatment regimens promise oral dosing, higher SVR, shorter duration of treatment and fewer side effects. In a near future all patients should qualify for future all-oral therapies. However recent analysis have shown that increasing efficacy of treatment alone will not be able to reduce the HCV disease burden. The largest reduction in HCV-related morbidity and mortality can be obtained when higher efficacy therapies is combined with increased diagnosis and treatment rate. With a treatment rate of 10% it is possible to achieve a > 90% decline in total infections by 2030. This would require a 3-5 fold increase in diagnosis and/or treatment for most countries. The implementation of screening criteria for hepatitis C virus (HCV) such as targeting birth cohorts has potential effect on reducing the progression of hepatitis C virus (HCV) to advanced liver disease (ALD) and could avoid unnecessary high financial costs and preserve quality of life. Robust data from public health surveillance, surveys of the general and risk populations are required to make decisions in allocating public health resources to diagnose, assess and treat HCV infection. In Belgium no recent prevalence studies have been conducted. The most cited anti-HCV prevalence is 0.87% based on a study in the Flemish population published in 1997 but collected in 1994. In a French Belgian population there was an overall seroprevalence of 0.6%. However, the population under study was not representative for the whole French community, because the recruited subjects were significantly younger. A survey among cirrhotic and hepatocellular patients in the French community revealed that 20% of cirrhosis and 47% of hepatocellular cancer were related to hepatitis C. The diagnosis rate of HCV in Belgium is estimated at 43%, signifying that more than 50% of HCV patients remains undiagnosed. Several studies have already mentioned that aged population especially those born after Second World War are carriers of hepatitis C virus infection. Early detection of HCV infection and treating before progress to advanced liver disease (ALD) is an excellent opportunity to rationalize resource allocation and to improve patients' quality of life. Recently birth cohort screening recommendations were developed in the United States. In Belgium, no formal screening strategy exists. However the Belgian association of the study of the liver (BASL) recommends targeted HCV screening for high-risk populations (including individuals with a blood transfusion or major medical event prior to 1 july 1990, intranasal or IDU and dialysis patients) in addition to nontargeted screening among pre-operative patients and pregnant women. A birth cohort analysis based on a model suggests a birth cohort between 1950 and 1975 in Belgium. This population should reflect 70% of the viremic population. In this study, the investigators want to estimate the prevalence of hepatitis C in Belgium in 2014 and to confirm the proposed targeted birth cohort and other risk factors. These data could provide an efficient source of identifying newly diagnosed patients as part of a national screening strategy.

The current trial will evaluate the safety and immunogenicity of GSK Biologicals' GSK2202083A vaccine when administered as a booster dose following priming in the first year of life with the same vaccine. This protocol posting deals with objectives & outcome measures of the booster phase. The objectives & outcome measures of the primary phase are presented in a separate protocol posting (NCT number = NCT00970307).

This randomized, 2 x 2 factorial, parrallel group study will compare the efficacy and safety of 48 versus 96 weeks of peginterferon alfa-2a [Pegasys], with or without entecavir, in patients with HbeAg negative chronic hepatitis B. Patients will be randomly allocated to receive Pegasys (180mcg subcutaneously weekly) for 48 weeks plus placebo (group A) or entecavir (0,5mg orally daily, group B) during weeks 12-36, or Pegasys (180mcg subcutaneously weekly) for 96 weeks plus placebo (group C) or entecavir (group D) during weeks 12-36. Anticipated time on study treatment is 48 or 96 weeks, with a follow-up of 48 weeks. Target sample size is <500 patients.

The investigators seek to provide immunization for individuals who are at high risk of contracting hepatitis B virus (HBV) infection because of their illicit drug use. The investigators will be using the syringe exchange programs (SEPs) in Hartford and Bridgeport, CT and Chicago, IL to contact high risk individuals and refer them for vaccination. The primary purpose of the study is to compare the standard schedule of hepatitis B vaccination at 0, 1, and 6 months to an accelerated schedule of vaccination at 0, 1, and 2 months. The investigators hypothesize that the accelerated scheduling will result in improved completion rates without significant loss in vaccine efficacy.

Patients who completed the conventional treatment against HCV and relapsed (the virus appeared again in their blood) have no effective therapy.

The purpose of this study is to find the best monthly dose schedule for the new Hepatitis Immune Globulin (Boca HBVIg, a study drug) when used in combination with an antiviral agent Lamivudine after liver transplantation. Boca HBVIg will be given along with Lamivudine to prevent hepatitis B reinfection following liver transplantation in patients with end stage liver failure due to hepatitis B infection.