Healthy Workers' COVID antibodies tracked for a year
NCT ID NCT04369066
First seen Jun 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This completed study followed nearly 2,000 healthy employees from Institut Curie and Institut Pasteur to see how their immune systems responded to the SARS-CoV-2 virus over time. Participants gave blood samples at four points over a year to test for antibodies. The goal was to learn how long antibodies last and how common past infection was in this group.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this study could help us understand how long COVID-19 antibodies last in healthy people and improve future testing strategies.
What could go wrong
This is an observational study, not a treatment trial. It only measures antibodies and cannot determine protection from infection or severe disease.
Disclaimer
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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.
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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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Institut Curie
Paris, 75005, France
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Institut Pasteur
Paris, 75015, France