title: Response to hepatitis B vaccine in family members of HBsAg carriers.
abstract: The family members of HBsAg carriers have an increased risk of hepatitis B virus (HBV) infection. 214 subjects from 98 families with no HBV markers were randomized to receive hepatitis B vaccine: HEVAC B (Institute Pasteur) or GCC VAC (Green Cross Corporation) at 0, 1, and 5 months. Of those who completed the course, 87.8% had an anti-HBs response of greater than 10 mIU/ml at 6 months. The response rate was similar for both sexes. There was a decrease in response rate and anti-HBs titre with age. The response rate for HEVAC B was 92.5% and GCC VAC 84.3%. The offspring had comparable response to the spouses who were not blood relatives of the index carriers, but this could be related to their younger age. Discriminant analysis showed that a higher anti-HBs titre was associated with HEVAC B, younger age, and less direct relationship with the index carrier.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002353:Carrier State; D002648:Child; D005260:Female; D006509:Hepatitis B / Q000235:genetics* / Q000276:immunology / Q000517:prevention & control; D006510:Hepatitis B Antibodies / Q000032:analysis / Q000096:biosynthesis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis* / Q000276:immunology; D017325:Hepatitis B Vaccines; D006801:Humans; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D012737:Sex Factors; D014611:Vaccination; D014761:Viral Hepatitis Vaccines / Q000276:immunology*
chemical_list: D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens; D017325:Hepatitis B Vaccines; D014761:Viral Hepatitis Vaccines