View clinical trials related to Hepatitis A.
Filter by:Subjects will be recruited and divided into 3 groups: 1. Hepatitis A（Live）Vaccine，Freeze-dried produced by Changchun Institute of Biological Products Co., Ltd 2. Hepatitis A（Live）Vaccine，Freeze-dried produced by Zhejiang Pukang Biotechnology Co., Ltd., and 3. Hepatitis A（Live）Vaccine，Freeze-dried produced by Institute of Medical Biology, Chinese Academy of Medical Sciences. After immunization, the immunogenicity and safety of three different manufacturers will be compared and the data will be analyzed.
More than five decades have passed since the identification of the etiologic agent of hepatitis B and yet this infection is a challenge for public health worldwide. The development and availability of the first hepatitis B vaccines, still in the 1980s, was a milestone for the prevention of the hepatitis B virus, and currently known as the gold standard strategy for the elimination of this infectious disease. In several countries, the introduction of the immunobiological occurred gradually, by age groups and risk groups, and in general, started with newborns and children. This universal immunization strategy has contributed to reducing the incidence and changing the epidemiological profile of HBV worldwide. At the beginning of the 21st century, it was already possible to shift the epidemiological curve of the infection to parasitize with 50 years or more. On the other hand, despite vaccination against hepatitis B being the most assertive tool for the prevention of HBV, the low performance of the vaccine in older groups remains a challenge for public health and the object of this study. To our knowledge, there are no data showing the efficacy of doses of enhanced hepatitis B vaccines for older adults, and the purpose of this study is to investigate and compare the immunogenicity of the hepatitis B vaccine in adult adults aged 50 years and over, using conventional doses (20μg) versus (vs) booster doses.
The purpose of the study is to evaluate on-treatment efficacy against hepatitis D virus (HDV) of JNJ-73763989 + nucleos(t)ide analog (NA) regimen compared to NA alone.
The study is a randomized, Double-Blind, Placebo-Controlled study to evaluate the safety, tolerability and pharmacokinetics, pharmacodynamics and food effect of HRS5091. The study will be conducted in three parts sequentially: Part 1a will consist of 58 healthy subjects, 5 groups. The purpose of this part is to explore the safety, tolerability and pharmacokinetics of single doses of HRS5091 tablet in healthy subjects. Part 1b will consist of 18 healthy subjects and it is one of groups in Part 1a.The purpose of this part is to explore food effect of HRS5091 in healthy subjects. Part 1c will consist of 10 healthy subjects, 1 groups. The purpose of this part is to explore the safety, tolerability and pharmacokinetics of multiple doses of HRS5091 tablet in healthy subjects. Part 2 will consist of 30 CHB patients.The purpose of this part is to explore the safety, tolerability and pharmacokinetics, pharmacodynamics of multiple doses of HRS5091 tablet in naïve and treatment-discontinued chronic hepatitis B (CHB) patients.
The objective of this study is to evaluate the safety and efficacy of ASC22 in the treatment of chronic hepatitis B after single and multiple drug administration.
Chronic hepatitis B (CHB) infection affected 292 million individuals in the world, translating to about 3.9% of global prevalence. Up to 40% of patients with CHB will develop liver-related complications. Many patients require long-term oral antiviral therapy since off-treatment sustained virological control can only be achieved in a minority of patients. It is uncommon for patients taking long-term antivirals to be able to stop the treatment if favorable factors are not present. Those include low viral load, long enough duration of treatment, and absence of cirrhosis. Some studies have found that inducing a mild flare is beneficial for achieving functional cure in chronic hepatitis B infection. There is lack of data in the immunological and virological profile in patients who stop their long-term antiviral therapy, and in those who developed flare after treatment cessation.
This is a phase 2 study in which subjects with chronic hepatitis B virus (HBV) infection will receive VIR-2218 alone or in combination with pegylated interferon alfa-2a and will be assessed for safety, tolerability, pharmacokinetics, and antiviral activity.
This is a study designed to evaluate the safety, tolerability and efficacy of New Molecular Entity (NME) combination therapies in Chronic Hepatitis B (CHB) participants with preserved liver function and without significant fibrosis/cirrhosis. The platform design allows comparison of multiple NME combination therapies against a common control, and introduction of additional treatment arms at later study time points. Each arm will consist of a screening phase (up to 8 weeks), treatment phase (up to 48 weeks) and post-treatment follow-up phase (48 weeks). The safety and efficacy will be monitored throughout the study.
A multi-center, randomized, open-label, group controlled study to evaluate the safety and efficacy of T101 combined with nucleoside (acid) analogues in chronic hepatitis B patients.
This study investigates hepatitis C virus (HCV) outbreak in South West general population in Burkina Faso with three specific objectives: estimate HCV prevalence in South West Region general population in 2019; identify factors associated with recent HCV infection (in subjects younger than 20 years); and evaluate the pilot treatment strategy implemented by the national program for diagnosed cases during investigation.