Active clinical trials for "Hepatitis B"

PR5I, a hexavalent pediatric combination vaccine is being developed to reduce the number of injections during the first 2 years of life while providing a complete course of immunization against infection caused by H. influenzae type b, hepatitis B virus, Corynebacterium diphtheriae, Clostridium tetani, Bordetella pertussis, and poliovirus types 1, 2, and 3. Primary Objective: To evaluate immunogenicity of PR5I with the adjuvant composition enhancement to the hepatitis B component when administered concomitantly with Prevnar® Secondary Objectives: To assess the safety and immunogenicity of PR5I when administered concomitantly, or one month apart with Prevnar® or separately with licensed vaccines used for routine infant vaccination in Canada.

This booster study will assess the immunogenicity, reactogenicity and safety of a booster dose of GSK Biologicals' DTPw-HBV/Hib Kft. vaccine versus DTPw-HBV/Hib vaccine, in healthy children, 18 to 24 months of age, who received the same vaccine for primary vaccination. Prior to the booster dose, this study will also assess the persistence of antibodies to the vaccine antigen components administered in the primary vaccination course. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Comparison of adjuvanted hepatitis B vaccine to double dose of Engerix™-B in pre- /haemodialysis patients aged ≥15 years

Comparison of adjuvanted hepatitis B vaccine to double dose of Engerix™-B in pre- /haemodialysis patients aged ≥15 years.

Hepatitis B Vaccine [Recombinant] is a well-established vaccine which has been used extensively, worldwide since its initial licensure in 1986. Hepatitis B vaccines: [1] induce protection against the morbidity and mortality of acute hepatitis B virus infection, [2] reduce the incidence of chronic infection in vaccinated populations, and [3] thereby, reduce the incidence of hepatocellular carcinoma. The purpose of the trial is to assess if the new manufacturing process of the Hepatitis B Vaccine [Recombinant] vaccine shows the same level of hepatitis B antibody response or better as the currently licensed Hepatitis B Vaccine [Recombinant] vaccine. This study will also confirm that the new process vaccine is as well tolerated as the current vaccine.

The purpose of this study is to determine the safety and acceptability of a vaginal microbicide in HIV uninfected sexually active women. Study hypothesis: The vaginal microbicide 1% tenofovir will be safe and well tolerated in HIV uninfected women who are in good general health.

To evaluate the persistence of anti-HBs antibodies up to 16, 17, 18, 19 and 20 years after administration of the first dose of the study vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007. No additional subjects will be recruited during this long-term follow-up study and no vaccine will be administered.

This study will look at what happens to the level of protection against hepatitis B (HB) disease if a 'helper' gel is applied to the skin over the injection site of a small dose of hepatitis B vaccine.

Hepatitis B immunization has been offered to all grade 4 students (age 9-10) in the province of Quebec, using Engerix-B at a dose of 10 mkg. The peak incidence of hepatitis B occurs between age 15 and 35; the proportion of vaccinated children who will still be protected at this age is currently unknown. This study is designed to determine: persistence of immunity until age 25 persistence of immunological memory as demonstrated by an anamnestic response following a booster dose the effect of a booster dose on immunogenicity at either 5, 10 or 15 years after the primary vaccination course (at age (15, 20 or 25).

To assess the anti-PRP antibody response one month after vaccination in the groups receiving a fourth consecutive dose of two formulations of DTPw-HBV/Hib vaccine