Active clinical trials for "Hepatitis A"

This is a Phase I double-blind, randomized, placebo controlled trial (1:4 ratio of placebo to vaccine) of Hepatitis E virus vaccine containing a 239 amino acid subfragment of Hecolin(R) (HEV-239) in 25 US males and non-pregnant females ages 18 - 45 (inclusive) to assess the safety, reactogenicity, and immunogenicity of HEV-239. Subjects will receive 3 doses of study product on Days 1, 29, and 180. Subjects will remain in the study for up to 13 months (including screening). The study duration will be approximately 15 months. Subjects will be observed for 30 minutes after vaccination. The occurrence of solicited injection site and systemic reactogenicity events will be measured from the time of study vaccination through Day 8 after each vaccination. These will be ascertained through use of an electronic memory (e-memory) aid, a telephone call on day 4 after each dose of vaccine, a Day 8 clinic visit, and potentially at the Day 15 clinic visit after each dose of vaccine. Unsolicited adverse events will be collected from vaccination through Day 29 after each vaccination. Serious adverse events will be collected from the time of the first study vaccination through the last study visit (Day 360). The study includes multiple phlebotomy time points for immunogenicity and blood collection for future use at visit 1 and Days 8, 15, and 29 after each vaccination. The durability of the immune response and future use collection will be assessed at 5 months after the first boost (Day 180) and at 6 months after the second boost (Day 360). The primary objectives of the study are to; 1) assess the safety and reactogenicity of HEV-239 following delivery of each vaccine dose; and 2) assess the number of subjects with > / = 4 fold rise in Hepatitis E virus (HEV) immunoglobulin G (IgG) at any time after vaccination.

Background: People with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) tend to get infections more easily. This is because their immune systems are weakened. Hepatitis B is a virus that can be transmitted when body fluids from an infected person enter the body of an uninfected person. This virus can be dangerous for people with leukemia and lymphoma. HEPLISAV-B is a new hepatitis B vaccine. Researchers want to see if it can protect people with CLL/SLL from getting hepatitis B. Objective: To learn how HEPLISAV-B works in people who have CLL or SLL. Eligibility: Adults 18 years and older with CLL (or SLL). They must be getting no treatment for their CLL, or getting ibrutinib or acalabrutinib for it. Design: This study lasts 6 months from the date of first vaccination. Participants may be screened with: Physical exam Blood tests Pregnancy test Visit 1 Participants will get blood drawn and the study vaccine. It will be given as an injection. If they get any symptoms within 7 days of the vaccine, they will write them in a diary. Visit 2 After 3 months, participants will come back to the NIH to get another blood draw and the second vaccine dose. Visit 3 Participants will return 3 months after the second vaccine dose was given. They will have blood drawn.

Health workers with biological risk in their tasks, who have been vaccinated as non-responders to conventional vaccination against Hepatitis B. To provide Health workers-staff with an additional protection tool against hepatitis B infection. To evaluate the efficacy of the adjuvanted vaccine in healthy nonresponders to conventional hepatitis B vaccine.

Hepatitis B virus (HBV) has infected over one third of the world's population; of these about 350 million go on to be chronic carriers. Infection with HBV can be self-limiting depending on age and immunity status of the infected person. Acute infection with HBV is cleared within six months of initial infection while chronic infection can last longer than six months. HBV can be transmitted perinatally, sexually, horizontally, through direct contact with infectious body fluids or blood, being pricked with an infected needle and injury from instruments contaminated with infectious body fluid or blood. Certain population groups are at higher risk of infection with HBV. Among these populations is that of health care workers (HCWs). In this population, HBV infection can occur through occupational exposure. In fact, the hepatitis B virus is more contagious than human immunodeficiency virus (HIV) during a needle stick injury (30% versus 0.5%). It is therefore imperative that HCWs are highly knowledgeable about HBV and how they can prevent transmission. Protection from HBV infection can be achieved by means of vaccination after which the HBV vaccine has been shown to be 90-100% effective.

This study was a comparative, randomized, double-blind clinical study of the efficacy and safety of Sci-B-Vac® (10 μg dose) and the Engerix-B® (20 μg dose) vaccines in two parallel groups of hepatitis B-naive healthy adult subjects in Russia.

Given the disproportionately high risk of chronic hepatitis C virus (HCV) infection in the baby boomer cohort, population-based screening has been demonstrated cost effective. Compared to point-of-care testing, however, bulk health messages with coupled lab requisitions delivered directly to patients meeting screening criteria via patient portals could improve HCV screening at minimal cost.

This trial will be done in participants who undergo transplantation of heart, kidney or lung at University of California, San Diego (UCSD) and receive a hepatitis C infected donor organ. In this trial, the plan is to start hepatitis C treatment just before transplant surgery and treat for a short one-week course to see if hepatitis C infection can be prevented in the transplant recipient. The plan is to perform this trial in 10 participants and if successful, the next step is to try to make it standard of care as prevention of infection is better than treating hepatitis C after discharge from transplant surgery (which is usually a 12 week standard treatment).

This study has two parts. Part A will assess the safety, tolerability and pharmacokinetics (PK) of AT-777 in healthy subjects. Part B will assess the safety, antiviral activity/efficacy and PK of AT-777 in combination with AT-527 after 8 weeks of treatment in HCV-infected subjects.

Title Reaching out to the UNdiagnosed people infected with blood-borne viral infections (RUNtoBBV) Objectives 1. To study the efficacy of an outreach methodology to increase the uptake for screening, linkage to care and treatment in (active or former) people who use drugs (PWUD) Trial design Prospective multicenter interventional cohort design Number of subjects 336 inclusions (with prevalence of HCV Ab: 30%) 168 Antwerp 168 Limburg Selection criteria Inclusion criteria: 18 years of age History of/ or active drug use Written informed consent obtained Exclusion criteria Currently enrolled in centralized OST program of Free Clinic or CAD Limburg Endpoints The following endpoints will be compared between the centers in Limburg and Antwerp: (Main outcome in bold) Main objectives: Prevalence of blood-borne viral infections in Belgian (former or active) PWUD: HCV infection (number of HCV Ab+ / number of screened PWUD) HBV infection (number of HBsAg+/number of screened PWUD) HIV infection (number of HIV Ab+/number of screened PWUD) Analysis of linkage to care to hepatologist/ infectiologist (number of patients who adhered to their consultation/number of referred patients) Secondary objectives: Analysis of risk behavior/sociodemographics linked to presence of BBV infections Analysis of uptake of anti(retro)viral treatment (number of patients started on treatment/number of patients needing treatment) Analysis of treatment adherence (adherence to treatment consultations/total planned consultations) Analysis of treatment outcome (total number of cured or virally suppressed patients/total number of treated patients)

This study is a randomized and controlled Phase IV clinical trial.The purpose of this study is to evaluate the immunogenicity and safety of combined immunization with live attenuated varicella vaccine and inactivated hepatitis A vaccine in children aged 12-15 months.