Hepatitis B Clinical Trial
Official title:
Long-term Study of Immune Response Persistence of GSK Biologicals' 2-dose Thiomersal-free Engerix™-B and 3-dose Preservative-free Engerix™-B Vaccines in Subjects Aged 11-15 Yrs
To evaluate the persistence of antibodies against hepatitis B at 30, 42, 54 and 66 months
after the first dose of the hepatitis B primary vaccination course.
Subjects were aged 11 to 15 years at the time of the primary vaccination course.
At the time of enrollment in the present long-term follow-up study subjects were aged 13 to
18 years.
The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep
2007.
All subjects who participated in the primary study, in which they received either 2 or 3
doses of GSK Biologicals hepatitis B vaccine, and who consented to participate in the
long-term follow-up at Month 42 were contacted by the investigators.
No additional subjects will be recruited during this long-term follow-up study and no vaccine
will be administered.
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