Comparative safety evaluation of pentavalent (DTaP-IPV-Hib) and hexavalent (DTaP-IPV-Hib-HepB) vaccines in infants: a real-world analysis based on VAERS.

ABSTRACT:

Background

Combination vaccines simplify immunization schedules and improve compliance, making them a global priority in pediatric immunization strategies. The DTaP-IPV-Hib pentavalent vaccine has been widely adopted, and with the incorporation of the hepatitis B vaccine (HepB), the DTaP-IPV-Hib-HepB hexavalent vaccine was developed. However, whether the addition of antigens in the hexavalent formulation is linked to differences in the reporting of adverse events following immunization (AEFIs) remains a matter of ongoing debate.

Objective

This study aims to compare the safety profiles and differences in AEFIs between the pentavalent vaccine and the hexavalent vaccine in infants aged 6 weeks to 2 years, based on real-world data from the U.S. Vaccine Adverse Event Reporting Sy

SUBMITTER: Wei Z 

PROVIDER: S-EPMC12611864 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature