Massive study tests if a stronger flu shot keeps seniors out of the hospital
NCT ID NCT05517174
First seen Nov 01, 2025 · Last updated May 17, 2026 · Updated 29 times
Summary
This large study tested whether a high-dose flu vaccine works better than the standard-dose version in adults aged 65 and older. Over 330,000 participants were randomly assigned to receive either the high-dose or standard-dose shot. The main goal was to see which vaccine better prevents hospitalizations for flu or pneumonia.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte
Hellerup, Capital Region, 2900, Denmark
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Danske Lægers Vaccinations Service
Søborg, 2860, Denmark
Conditions
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