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Long-Term Immune Persistence of GlaxoSmithKline Biologicals' Inactivated Hepatitis A Vaccine, Injected According to 0, 6-month Schedule

Hepatitis A Clinical Trial

Official title:
Double-blind, Randomized Study to Evaluate the Immunogenicity and Reactogenicity of Three Different Lots of GlaxoSmithKline Biologicals' Inactivated Hepatitis A Vaccine Containing 1440 EL.U of Antigen Per mL and Injected According to a 0, 6 Month Schedule in Healthy Adult Subjects

Clinical Trial Summary

The aim of this study is to evaluate the long-term persistence of hepatitis A antibodies at 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 years after subjects received their first dose of a 2 dose vaccination schedule of hepatitis A vaccine.

Clinical Trial Description

This is a long-term follow-up study at Years 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 after primary vaccination with GSK Biologicals' hepatitis A vaccine (two-dose schedule). To evaluate the long-term antibody persistence, volunteers will donate a blood sample at Years 11, 12, 13, 14,15, 16, 17, 18, 19 and 20 after the first vaccine dose of the primary vaccination course to determine their anti-hepatitis A (anti-HAV) antibody concentrations If a subject has become seronegative for anti-HAV antibodies during any of the long-term blood sampling time point (i.e. Years 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 years), he/ she will be offered an additional vaccine dose. A blood sample will be taken on the day of the additional vaccination, 14 days and one month after additional vaccination to evaluate the immune response following this vaccination.

The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007 and to include an extended follow up period up to Year 20 after primary vaccination.

The study has 10 phases (100576, 100577, 100578, 100579, 100580, 111028, 111029, 111030, 111031, 111032). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00289757
Study type Interventional
Source GlaxoSmithKline
Contact
Status Completed
Phase Phase 4
Start date January 1, 2004
Completion date March 1, 2013
View Details
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