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  • Title: Immunogenicity and reactogenicity of a three-dose primary vaccination course with a combined diphtheria-tetanus-acellular pertussis-hepatitis B-inactivated polio-haemophilus influenzae type b vaccine coadministered with a meningococcal C conjugate vaccine.
    Author: Tejedor JC, Omeñaca F, García-Sicilia J, Verdaguer J, Van Esso D, Esporrín C, Molina V, Muro M, Marés J, Enrubia M, Moraga F, García-Corbeira P, Dobbelaere K, Schuerman L, Spanish DTPa-HBV-IPV/Hib-076 Study Group.
    Journal: Pediatr Infect Dis J; 2004 Dec; 23(12):1109-15. PubMed ID: 15626947.
    Abstract:
    AIM: To evaluate the immunogenicity and safety of 3 doses of the combined diphtheria-tetanus toxoids-acellular pertussis-hepatitis B virus-inactivated poliovirus/Haemophilus influenzae type b (DTPa-HBV-IPV/Hib) vaccine (Infanrix hexa) when coadministered with a CRM197-conjugated meningococcal C vaccine (Meningitec) at different injection sites during the same visit or during separate visits. METHODS: Healthy infants were randomized in an open randomized multicenter study to receive either the DTPa-HBV-IPV/Hib and meningococcal C conjugate vaccines during the same vaccination visit at 2, 4 and 6 months of age (coadministration group) or the DTPa-HBV-IPV/Hib vaccine at 2, 4 and 6 months of age and the meningococcal C conjugate vaccine at 3, 5 and 7 months of age (separate administration group). RESULTS: The immunogenicity analysis included 452 infants, 228 in the coadministration group and 224 in the separate administration group. One month after primary vaccination, 99.1% of subjects in both groups achieved anti-polyribosylribitol phosphate antibody concentrations >/=0.15 microg/mL. The vaccine response against pertussis antigens was at least 99.1% in both groups. For all other DTPa-HBV-IPV/Hib vaccine antigens, at least 97.8% of all subjects of both groups were seroprotected. In addition, 99.5% of all subjects had meningococcal C bactericidal antibody titers >/=1/8 and 99.1% >/=1/128. Coadministration of both vaccines did not result in an increased local or general reactogenicity compared with separate administration. CONCLUSION: Coadministration of the combined DTPa-HBV-IPV/Hib vaccine and the meningococcal C conjugate vaccine during the same vaccination visit was immunogenic and safe.
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