期刊
VACCINE
卷 21, 期 31, 页码 4588-4592出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0264-410X(03)00509-7
关键词
hepatitis A; vaccine; epaxal((R)); aluminium-free vaccine; virosomes
To evaluate the immunogenicity and tolerability of Epaxal(R) in infants and children, 30 infants (aged 6-7 months) and 30 children (aged 5-7 years) received a single intramuscular dose of the aluminium-free virosomal hepatitis A virus (HAV) vaccine Epaxal(R) and a booster dose after 12 months. Anti-HAV antibody titres were measured at baseline (before injection), at 1 and 12 months after primary vaccination, and 1 month after the booster vaccination. Sixteen evaluable infants had maternal anti-HAV antibodies at baseline. Complete seroprotection (titre greater than or equal to20 mIU/ml) was achieved by all infants and children at Month 1 and at Month 12. Additionally, all subjects showed a strong antibody response to booster vaccination. In infants without maternal anti-HAV antibodies, the response was four-fold higher than in those with maternal anti-HAV antibodies. Both doses of Epaxal(R) were well tolerated. These preliminary data suggest that Epaxal(R) is an effective hepatitis A vaccine for children and infants from 6 months of age. (C) 2003 Elsevier Ltd. All rights reserved.
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