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Vaccine. 2012 Oct 5;30(45):6492-500. doi: 10.1016/j.vaccine.2012.07.040. Epub 2012 Jul 31.

A fully liquid DTaP-IPV-Hep B-PRP-T hexavalent vaccine for primary and booster vaccination of healthy Mexican children.

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Hospital Metropolitano Bernardo Sepúlveda, Monterrey, Mexico.



To evaluate an investigational, fully liquid hexavalent diphtheria-tetanus-acellular pertussis-inactivated poliovirus-hepatitis B-Haemophilus influenzae type b (DTaP-IPV-Hep B-PRP-T: Hexaxim™) vaccine for primary and booster vaccination of healthy children in Mexico.


Infants (N=1189) were randomized to receive one of three lots of the DTaP-IPV-Hep B-PRP-T vaccine or a licensed hexavalent control vaccine (Infanrix™ hexa) for primary vaccination at 2, 4 and 6 months. All participants who completed the primary series and agreed to participate in the booster part of the study received a dose of the investigational vaccine at 15-18 months of age. Validated serological assays and parental reports were used to assess immunogenicity and safety, respectively.


Post-primary vaccination, ≥95.8% of participants in both the DTaP-IPV-Hep B-PRP-T and control groups were seroprotected (SP) against diphtheria, tetanus, poliovirus, hepatitis B and PRP, or had seroconverted (SC) to the pertussis toxin (PT) and filamentous hemagglutinin (FHA) pertussis antigens. The SP/SC rates induced by the three DTaP-IPV-Hep B-PRP-T lots were equivalent. No differences in SP/SC rates were observed between the pooled lots of investigational vaccine and the control vaccine. Antibody persistence at 15-18 months was comparable between groups, with strong increases in all antibody concentrations post-DTaP-IPV-Hep B-PRP-T booster. Both vaccines were well tolerated for primary vaccination, as was the booster dose of DTaP-IPV-Hep B-PRP-T.


These study findings confirm the suitability of the combined, fully liquid DTaP-IPV-Hep B-PRP-T vaccine for inclusion in routine childhood vaccination schedules.

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