Document Detail


Early predictor of the efficacy of immunoprophylaxis against perinatal hepatitis B transmission: analysis of prophylaxis failure.
MedLine Citation:
PMID:  1832257     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To research early predictors of the efficacy of the ongoing mass immunoprophylaxis against perinatal hepatitis B virus (HBV) transmission in Taiwan and to analyse the possible causes of immunoprophylaxis failure, 52 hepatitis Be antigen (HBeAg)-positive carrier mothers were recruited for the study. Maternal blood samples were taken at the first and third trimesters and delivery. Umbilical blood was collected and venous blood samples were taken at 4, 7, 11 and 14 months of age. Serum hepatitis B surface antigen (HBsAg) and antibody titres, HBeAg titre and HBV-DNA concentration were analysed. All the umbilical cord blood samples were negative for HBsAg. Among the 52 vaccinated infants, four were poor responders (anti-HBs less than 10 mIU ml-1 before vaccine booster). Another five infants became HBsAg-positive by 4 months of age and remained carriers. All these five carrier mothers were HBV-DNA-positive and three of them had risk factors related to maternal-fetal haemorrhage during pregnancy or delivery. The remaining 43 infants showed protective anti-HBs level (greater than 10 mIU ml-1) by 4 months of age. Three mothers out of these 43 cases also had the same haemorrhage risk factors during pregnancy or delivery, but were HBV-DNA-negative. Therefore, the anti-HBs level at 4 months is a predictor of the success of immunoprophylaxis. It may be helpful to distinguish HBV-DNA-positive carrier mothers among HBeAg-positive ones, to avoid inducing more maternal-fetal haemorrhage in such cases during pregnancy or delivery. Otherwise, additional hepatitis B immune globulin may be indicated in such cases to raise the successful prevention rate.
Authors:
H H Lin; M H Chang; D S Chen; J L Sung; K H Hong; Y C Young; K H Yang; T Y Lee
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Vaccine     Volume:  9     ISSN:  0264-410X     ISO Abbreviation:  Vaccine     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-10-08     Completed Date:  1991-10-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8406899     Medline TA:  Vaccine     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  457-60     Citation Subset:  IM    
Affiliation:
Department of Obstetrics and Gynaecology, Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Carrier State / immunology
Female
Hepatitis B / immunology,  prevention & control*,  transmission
Hepatitis B Antibodies / administration & dosage,  blood
Hepatitis B Vaccines
Humans
Infant
Infant, Newborn
Pregnancy
Pregnancy Complications, Infectious / immunology
Viral Hepatitis Vaccines / administration & dosage
Chemical
Reg. No./Substance:
0/Hepatitis B Antibodies; 0/Hepatitis B Vaccines; 0/Viral Hepatitis Vaccines

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