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Efficacy, Immunogenicity, and Safety of High-Dose Quadrivalent Influenza Vaccine Compared With Standard-Dose Quadrivalent Influenza Vaccine in Children 6 Months Through 35 Months of Age

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Trial Profile

Efficacy, Immunogenicity, and Safety of High-Dose Quadrivalent Influenza Vaccine Compared With Standard-Dose Quadrivalent Influenza Vaccine in Children 6 Months Through 35 Months of Age

Status: Discontinued
Phase of Trial: Phase III

Latest Information Update: 28 Dec 2025

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At a glance

  • Drugs Influenza virus vaccine (Primary) ; GSK 2321138A
  • Indications Influenza virus infections
  • Focus Pharmacodynamics; Registrational
  • Sponsors Sanofi Pasteur

Most Recent Events

  • 24 Dec 2025 Status changed from suspended to discontinued. The study was suspended due to COVID-19 pandemic and discontinued due to new changes to the recommendations for flu vaccines.
  • 05 Apr 2022 Status changed from recruiting to suspended.
  • 15 Mar 2022 Planned End Date changed from 1 Jul 2024 to 1 Jul 2026.

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