Super-Sized flu shot aims to protect Seniors' hearts and lungs

NCT ID NCT04137887

First seen Nov 01, 2025 · Last updated May 08, 2026 · Updated 27 times

Summary

This study compared a high-dose flu vaccine to a standard-dose one in over 33,000 adults aged 65 and older. The goal was to see if the stronger shot could better prevent hospital stays for heart or breathing problems. The study was stopped early, but it aimed to find a better way to protect older adults from serious flu complications.

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Contacts and locations

Locations

  • Investigational Site Number 2469999

    Tampere, 33520, Finland

Conditions

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