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Post-marketing Surveillance Study for the Safety of Efluelda® Pre-filled Syringe, a High-dose Trivalent Influenza Vaccine Administered to Adults 65 Years or Older in the Republic of Korea

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Trial Profile

Post-marketing Surveillance Study for the Safety of Efluelda® Pre-filled Syringe, a High-dose Trivalent Influenza Vaccine Administered to Adults 65 Years or Older in the Republic of Korea

Status: Not yet recruiting
Phase of Trial: Phase IV

Latest Information Update: 13 Feb 2026

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At a glance

  • Drugs Seasonal-influenza-virus-vaccine-high-dose+COVID-19-Vaccine-adjuvanted-Sanofi (Primary)
  • Indications Influenza virus infections
  • Focus Adverse reactions

Most Recent Events

  • 10 Feb 2026 Planned initiation date changed from 30 Jan 2026 to 31 Mar 2026.
  • 13 Jan 2026 Planned initiation date changed from 19 Dec 2025 to 30 Jan 2026.
  • 22 Dec 2025 New trial record

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