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Arch Dis Child Fetal Neonatal Ed. 1997 Jul;77(1):F47-51.

Long-term hepatitis B vaccine in infants born to hepatitis B e antigen positive mothers.

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Viral Hepatitis Research Unit Chulalongkorn University Hospital, Bangkok, Thailand.


Neonates of hepatitis B surface antigen (HBsAg) positive and hepatitis B encoded antigen (HBeAg) positive mothers received 10 micrograms of recombinant hepatitis B vaccine at months 0, 1, 6, or 0, 1, 2, 12, with or without immunoglobulin at birth, and were followed up to the age of 8 years for HBsAg, anti-HBc, and anti-HBs. Some were boosted at month 60. The overall vaccine protection at month 12 was 96.2%. No child became a chronic carrier beyond the age of 3 years, showing that this vaccine provides immediate protection against HBsAg carriage, and long term protection against fetally acquired HBsAg. After month 60 hepatitis B serological markers without disease, indicating re-exposure to HBV, reappeared in comparable numbers among boosted and non-boosted children (5 for a total of 167 children). This vaccine provides long-term protection against hepatitis B chronic carriage and infection in high risk neonates with or without a month 60 booster. A booster at the age of 5-6 years or 11-12 years would reduce HBV infection, viral circulation and transmission, while ensuring long-term antibody persistence.

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