Woman and Man
- | Country :
- Thailand
- | organs : -
- | Specialty : -
Extract
This study is performed to evaluate the persistence of anti-hepatitis B surface antigen (HBs) antibodies up to 16, 17, 18, 19 and 20 years after administration of the first dose of the study vaccine, Engerix-B™. No new subjects will be recruited in this long-term follow-up study. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
Inclusion criteria
- Hepatitis B