Exposed but symptom-free? study tracks hidden virus spreaders
NCT ID NCT04259892
First seen May 31, 2026 · Last updated Jun 06, 2026 · Updated 1 time
Summary
This study followed 324 people who had close contact with a confirmed COVID-19 case to see how long the virus stays in their nose and throat. Researchers tested participants multiple times over 12 days and tracked any symptoms. The goal was to understand how many exposed people become silent spreaders of the virus.
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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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Contacts and locations
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Locations
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Centre Hospitalier Félix Guyon Ile de la Réunion CHU nord
Saint-Denis, 97400, France
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Centre Investigation Clinique 1415 CHRU Tours - Hôpital Bretonneau
Tours, 37000, France
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Centre Investigation Clinique 1417 Hôpital Cochin Bâtiment Lavoisier
Paris, 75679, France
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Centre Investigation Clinique 1433 CHRU de NANCY
Nancy, 54511, France
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Centre d'Investigation Clinique 1403 -CHU Lille
Lille, 59037, France
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Centre d'Investigation Clinique Hôpital Saint Louis
Paris, 75010, France
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Centre d'Investigation Clinique Ile de la Réunion CHU sud
Saint-Pierre, 97448, France
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Centre d'investigation Clinique 1425, Hôpital Bichat Claude Bernard
Paris, 75018, France
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Centre d'investigation clinique 1406 CHU Grenoble
Grenoble, 38043, France
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Centre d'investigation clinique 1414 Service de Pharmacologie clinique CHU Rennes Hôpital Pontchaillou
Rennes, 35033, France
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Centre d'investigation clinique 1432 Hôpital François Mitterrand CHU Bourgogne
Dijon, 21 079, France
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Département maladie infectieux CHU Saint Etienne
Saint-Etienne, 42055, France
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Service de Maladies infectieuses et tropicales Centre hospitalier
Cayenne, 97306, French Guiana
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Service de maladies infectieuses et tropicales Hôpital Jean Minjoz CHRU Besançon
Besançon, 25030, France
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Service des Maladies infectieuses et tropicales, Pôle Spécialités médicales, CHU Pellegrin
Bordeaux, 33076, France
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Service des maladies infectieuses Hôpital Gabriel Montpied CHU de Clermont Ferrand
Clermont-Ferrand, 63000, France
Conditions
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Conditions inferred from the trial description
These were inferred from the trial's summary, not listed by the trial registrant.