Flu vaccine showdown: 2023 vs 2024 formula tested in small study
NCT ID NCT06567860
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how well the 2023 and 2024 flu vaccines protect against influenza A. Researchers gave the 2023 vaccine to 23 healthy adults between May and June 2024, when the vaccine was about to expire, to compare their immune responses with people who got the 2023 vaccine earlier or the 2024 vaccine later. The goal was to understand how updating the vaccine each year affects protection.
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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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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
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Locations
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La Jolla Institute for Immunology
La Jolla, California, 92037, United States