|Title:||Serum level of anti-hepatitis B surface antigen 6-8 years after hepatitis B vaccination at birth|
|Abstract:||The duration of protection after hepatitis B vaccination in children is unknown. We determined the serum level of antibody to hepatitis B surface antigen [anti-HBsAg] in 273 randomly selected 7-9-year-old schoolchildren from Zanjan City, Islamic Republic of Iran, who had been fully vaccinated against hepatitis B starting at birth. Titres </= 10 mIU/mL were considered unprotective. Just over half of the children [52%] had titres </= 10 mIU/mL with no difference between the sexes, while 81 [29.7%] had no anti-HBsAg [0 mIU/mL]. Three of the children had antibodies to hepatitis B core protein. More studies are needed to determine the necessity for or timing of booster doses|
|Keywords:||Hepatitis B Surface Antigens|
Hepatitis B Antibodies
|Subject:||Hepatitis B Vaccines|
|Appears in Collections:||EMRO Journal Articles (EMHJ)|
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