Abstract | BACKGROUND: In this open, randomized trial the safety, reactogenicity, and immunogenicity profile of a high-dose combined hepatitis A and B candidate vaccine was compared with that of Twinrix Paediatric in healthy volunteers aged 11-18 years. METHODS: RESULTS: Injection site soreness and fatigue were the most frequently reported solicited symptoms. For hepatitis A all subjects had seroconverted at month 7, and geometric mean titres (GMT) were 8,151 mIU/ml in the high-dose group and 6,394 mIU/ml in the Twinrix Paediatric group. For hepatitis B the GMT for the Twinrix Paediatric group was significantly higher at month 2 and month 6. However, no difference in GMT between groups could be established at month 7. The seroprotection rate attained 100% in both groups, and GMT were 4,212 mIU/ml (high-dose group) and 6,330 mIU/ml ( Twinrix Paediatric). CONCLUSIONS: The two vaccines showed similar safety and reactogenicity profiles. After completion of the vaccination schedule, no difference in immunogenicity was shown. This high-dose vaccine, administered following a two-dose schedule, can be considered an alternative regimen for the immunization of healthy adolescents against hepatitis A and hepatitis B infections, in a setting where vaccinees are not immediately at risk of exposure to hepatitis B.
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Authors | K Van Herck, P Van Damme, F Collard, S Thoelen |
Journal | Scandinavian journal of gastroenterology
(Scand J Gastroenterol)
Vol. 34
Issue 12
Pg. 1236-40
(Dec 1999)
ISSN: 0036-5521 [Print] England |
PMID | 10636072
(Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial)
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Chemical References |
- Hepatitis A Antibodies
- Hepatitis A Vaccines
- Hepatitis Antibodies
- Hepatitis B Antibodies
- Hepatitis B Vaccines
- Vaccines, Combined
- Viral Hepatitis Vaccines
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Topics |
- Adolescent
- Child
- Female
- Hepatitis A
(immunology, prevention & control)
- Hepatitis A Antibodies
- Hepatitis A Vaccines
- Hepatitis Antibodies
(blood)
- Hepatitis B
(immunology, prevention & control)
- Hepatitis B Antibodies
(blood)
- Hepatitis B Vaccines
(administration & dosage, adverse effects, immunology)
- Humans
- Immunization Schedule
- Male
- Risk Factors
- Vaccines, Combined
(administration & dosage, adverse effects, immunology)
- Viral Hepatitis Vaccines
(administration & dosage, adverse effects, immunology)
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