Stanford study: does COVID-19 weaken flu shot protection?
NCT ID NCT04579588
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how well the flu vaccine works in people who have had COVID-19, including those with long-term symptoms like fatigue or diabetes. Researchers will compare immune responses between 230 adults and children (ages 9-64) who had COVID-19 and those who did not. The goal is to understand if past COVID-19 infection changes how the body responds to the flu vaccine over time.
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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.
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The condition terms exactly as the trial's registrant entered them.
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Stanford University
RECRUITINGPalo Alto, California, 94304, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••