Hepatitis B Virus Antibody Booster Program for the Production of Hepatitis B Immune Globulin (HBIG)

Inclusion Criteria

• Age 20-55 years.
• Naïve or previously hepatitis B-vaccinated males or females.
• Normal and healthy as determined by medical history, physical exam, vital signs andclinical laboratory tests
• Subject must meet all required/recommended subject suitability criteria that pertainto normal source plasma donors with the following exception:
• Subjects who previously tested positive for HBsAg may be accepted into the anti- HBsprogram provided they now test negative and meet all other normal donor suitabilitycriteria.
• Written informed consent.

Exclusion Criteria:

• Subjects who have received a hepatitis B vaccination in the previous six months.
• History of hypersensitivity to yeast or any components of the Engerix-B® vaccine
• History of hypersensitivity to any hepatitis B-containing vaccine.
• Use of any investigational product within the past 30 days or during the course of thestudy.
• Use of steroids or immunosuppressives during the study period.
• Received immunosuppressive therapy (including systemic steroids) within 30 days beforestudy entry
• Subjects who have received cytotoxic therapy (in the previous 5 years prior to studyentry)
• Received parenteral immune globulin products or blood products within 3 months beforestudy entry with the following exceptions:
• RhoGAM (or equivalent anti-D immune globulin) within 6 weeks before study entry;
• Pertussis immune globulin: no exclusion
• Received parenteral immune globulin products or blood products (within 3 months beforestudy entry)
• Past, present, or suspected IV drug use
• Positive HIV, HBV* or HCV test result (*except as described above in InclusionCriteria)
• Autoimmune disease (such as, but not limited to demyelinating disease)
• Subjects with cancer, heart disease (including hospitalization for myocardialinfarction, arrhythmia, syncope, congestive heart failure), uncontrolled hypertension,uncontrolled insulin-dependent diabetes mellitus, seizures, kidney disease
• Severely or morbidly obese, or higher obesity classification, which corresponds to BMIof 35 or higher
• Pregnancy or lactation.