Supercharged flu shot aims to better protect seniors
NCT ID NCT04024228
First seen Nov 01, 2025 · Last updated May 16, 2026 · Updated 32 times
Summary
This study tested whether a high-dose flu vaccine works better than the standard dose for adults aged 60 and older. About 1,500 healthy volunteers received either the high-dose or standard-dose shot. Researchers measured immune responses 28 days later and tracked safety. The goal was to see if the stronger dose provides better protection against four flu strains.
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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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Investigational Site Number 0560001
Ghent, BE-9000, Belgium
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Investigational Site Number 0560002
Wilrijk, 2610, Belgium
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Investigational Site Number 2500001
Gières, 38610, France
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Investigational Site Number 2500003
Pierre-Bénite, 69495, France
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Investigational Site Number 2500004
Paris, 75014, France
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Investigational Site Number 2760001
Essen, 45136, Germany
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Investigational Site Number 2760002
Oldenburg in Holstein, 23758, Germany
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Investigational Site Number 2760003
Berlin, 10629, Germany
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Investigational Site Number 2760004
Berlin, 13347, Germany
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Investigational Site Number 2760005
Berlin, 10787, Germany
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Investigational Site Number 3800001
Genova, IT-16132, Italy
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Investigational Site Number 3800003
Palermo, 90127, Italy
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Investigational Site Number 5280001
Utrecht, 3584 CX, Netherlands
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Investigational Site Number 6160001
Dębica, 39-200, Poland
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Investigational Site Number 6160002
Wola, 43-225, Poland
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Investigational Site Number 6160003
Siemianowice Śląskie, 41-103, Poland
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Investigational Site Number 6160004
Wroclaw, 50-452, Poland
Conditions
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