Evaluate Immune Response Approximately 5 to 6 Years After Receiving Different Formulations of GSK Bio Hep B Vaccine
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To evaluate the persistence of antibodies against hepatitis B, approximately 5 to 6 years after the first dose of the hepatitis B in the primary vaccination study.
Condition or disease
Biological: Hepatitis B vaccine
All subjects who participated in the primary vaccination study, where subjects who received GSK Biologicals' hepatitis B vaccine and who will consent to participate in this long-term follow-up study, approximately 5 to 6 years after the primary vaccination study. The study will be conducted in only 3 centres out of the 4 centres in the primary vaccination study.
Evaluate the Anti-HBs Antibody Persistence, in Subjects Who Received GSK Biologicals' Preservative-free or Thiomersal-free Engerix™-B or Engerix™-B Containing Thiomersal, Approximately 5 to 6 Yrs Earlier
Study Start Date
Actual Study Completion Date
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Ages Eligible for Study:
18 Years to 50 Years (Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Subjects should have participated in the primary study and should have received the first primary dose of vaccination more than five years ago and less than six years ago before blood sampling in this long-term follow-up study.
Written informed consent obtained from the subject for the long-term follow-up.