Abstract | OBJECTIVES: In 1998 the World Health Organization (WHO) recommended the inclusion of Haemophilus influenza type B (Hib) conjugate vaccines in infant immunization programs, whenever in accordance with national priorities. GlaxoSmithKline Biologicals has developed a new pentavalent combined diphtheria- tetanus-whole cell pertussis- hepatitis B/Hib (DTPw-HB/Hib) vaccine containing 5 microg of polyribosylribitol phosphate (PRP), and we assessed the immunogenicity and reactogenicity of primary and booster vaccination of healthy children with this new vaccine compared with a reference regimen consisting of the licensed DTPw-HB (Tritanrix) and Hib ( Hiberix) vaccines given as simultaneous concomitant injections. METHODS: We performed a randomized, double-blind study from September 1998 to August 1999 to establish the immunogenicity and reactogenicity of primary and booster vaccination of healthy children with the new pentavalent combined DTPw-HB/Hib vaccine given as a single injection, compared with the reference regimen. RESULTS: Both vaccination regimens elicited excellent immune responses, with all subjects in both groups achieving seroprotective anti-PRP antibody concentrations of > or = 0.15 microg/mL one month after primary vaccination. The combined DTPw-HB/Hib vaccine was non-inferior to the licensed vaccines in terms of seroprotection/seropositivity/ vaccine response rates for all antigen components. Persistence of antibodies against all study vaccine antigens up to the time of booster vaccination was comparable between groups, and a marked increase of all antibody concentrations was observed after the booster dose. Both vaccine regimens were similar in terms of their overall reactogenicity profiles. CONCLUSIONS: Our results indicate that the new DTPw-HB/Hib pentavalent combination vaccine provides an efficient and reliable way of implementing WHO recommendations for controlling hepatitis B and Hib infections on a worldwide basis.
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Authors | Miguel Tregnaghi, Pio López, Crisanta Rocha, Luis Rivera, Marie-Pierre David, Ricardo Rüttimann, Lode Schuerman |
Journal | Revista panamericana de salud publica = Pan American journal of public health
(Rev Panam Salud Publica)
Vol. 19
Issue 3
Pg. 179-88
(Mar 2006)
ISSN: 1020-4989 [Print] United States |
PMID | 16640847
(Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Chemical References |
- Diphtheria-Tetanus-Pertussis Vaccine
- Haemophilus Vaccines
- Hepatitis B Vaccines
- Vaccines, Combined
- diphtheria-tetanus-pertussis-haemophilus b conjugate vaccine
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Topics |
- Child, Preschool
- Confidence Intervals
- Data Interpretation, Statistical
- Diphtheria-Tetanus-Pertussis Vaccine
(administration & dosage, immunology)
- Double-Blind Method
- Haemophilus Vaccines
(administration & dosage, immunology)
- Haemophilus influenzae type b
(immunology)
- Hepatitis B
(prevention & control)
- Hepatitis B Vaccines
(administration & dosage, immunology)
- Humans
- Immunization Schedule
- Immunization, Secondary
- Infant
- Latin America
- Time Factors
- Vaccination
- Vaccines, Combined
(administration & dosage)
- World Health Organization
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