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  • Title: Immunogenicity, Safety, and Tolerability of a Hexavalent Vaccine in Infants.
    Author: Marshall GS, Adams GL, Leonardi ML, Petrecz M, Flores SA, Ngai AL, Xu J, Liu G, Stek JE, Foglia G, Lee AW.
    Journal: Pediatrics; 2015 Aug; 136(2):e323-32. PubMed ID: 26216331.
    Abstract:
    BACKGROUND: DTaP5-IPV-Hib-HepB is a fully liquid investigational hexavalent vaccine directed against 6 diseases. METHODS: This multicenter, open-label, comparator-controlled, phase III study randomly assigned healthy infants 2-to-1 as follows: group 1 received DTaP5-IPV-Hib-HepB, PCV13, and RV5 at 2, 4, and 6 months of age followed by DTaP5, Hib-OMP, and PCV13 at 15 months of age; group 2 received DTaP5-IPV/Hib, PCV13, and RV5 at 2, 4, and 6 months of age, with HepB at 2 and 6 months of age, followed by DTaP5, Hib-TT, and PCV13 at 15 months of age. RESULTS: Overall, 981 participants were vaccinated in group 1 and 484 in group 2. Immune responses in group 1 to all antigens contained in DTaP5-IPV-Hib-HepB 1 month after dose 3 and for concomitant rotavirus vaccine were noninferior to those in group 2, with the exception of antipertussis filamentous hemagglutinin (FHA) geometric mean concentrations (GMCs). Vaccine response rates for FHA were noninferior to control. After the toddler dose, group 1 immune responses were noninferior to group 2 for all pertussis antigens. Solicited adverse event rates after any dose were similar in both groups, with the exceptions of increased injection-site erythema, increased fever, and decreased appetite in group 1. Fever was not associated with hospitalization or seizures. CONCLUSIONS: The safety and immunogenicity of DTaP5-IPV-Hib-HepB are comparable with the analogous licensed component vaccines. Decreased FHA GMCs and increased injection-site reactions and fever are unlikely to be clinically significant. DTaP5-IPV-Hib-HepB provides a new combination vaccine option aligned with the recommended US infant immunization schedule.
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