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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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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Assaf-Harofeh Medical Center
Ramla, 70300, Israel
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