Scientists track T-Cell activity in COVID-19 patients to unlock immunity secrets
NCT ID NCT04707820
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at how T-cells, a key part of the immune system, respond to the COVID-19 virus in 51 people—hospitalized patients and healthy hospital staff. Researchers measured T-cell activity at several time points using a blood test called ELISPOT. The goal was to better understand how the body builds immunity against the virus.
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 develop better tests to measure T-cell immunity against COVID-19, which may improve understanding of how the body fights the virus.
- What could go wrong
- This is a small, observational study with only 51 participants, so results may not apply to everyone. It does not test any treatment or vaccine.
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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.
Contacts and locations
Locations
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Rouen University Hospital
Rouen, France
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