Hidden immunity: do symptom-free COVID carriers develop antibodies?
NCT ID NCT04348422
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how the immune system of people with COVID-19 responds, comparing those who had symptoms to those who did not. Researchers tested over 200 adults from households with a confirmed COVID-19 case to see if asymptomatic carriers develop antibodies. The goal was to understand if symptom-free individuals can still spread the virus and whether they build immunity.
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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.
Contacts and locations
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Locations
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Assaf-Harofeh Medical Center
Ramla, 70300, Israel